AAMCO Knoxville, TN Blog

Navigating Smoky Mountain Drives: Vehicle Maintenance for Mountainous Terrains

Fri, 19 Jan 2024 16:48:06 GMT

Nestled between Tennessee and North Carolina, the Smoky Mountains offer breathtaking landscapes and winding roads that beckon adventure seekers and nature enthusiasts alike. While the allure of driving through the Smokies is undeniable, the unique challenges presented by mountainous terrains require special attention to vehicle maintenance. In this article, we'll explore the challenges of driving in and around the Smoky Mountains and provide essential tips for ensuring your vehicle is prepared for the twists and turns of these picturesque drives.

Challenges of Driving in the Smoky Mountains:

1. Steep Inclines and Declines:

The Smoky Mountains are known for their steep inclines and declines, making it crucial for vehicles to have well-maintained brakes and a reliable braking system. Regular brake inspections, including checking brake pads and fluid levels, are essential to ensure optimal performance when navigating the elevation changes.

2. Curvy and Winding Roads:

The winding roads of the Smoky Mountains demand precise handling. Tires play a crucial role in maintaining control on these curves. Ensure that your tires have sufficient tread depth, and consider investing in high-quality tires designed for mountainous terrains. Additionally, a wheel alignment check can enhance stability and handling.

3. Altitude and Engine Performance:

As you ascend into higher altitudes, your vehicle's engine may experience changes in performance. Ensure your engine is well-tuned by scheduling regular maintenance, including air filter replacements and spark plug checks. A well-maintained engine is more likely to deliver optimal performance at varying altitudes.

4. Temperature Fluctuations:

The Smoky Mountains can experience rapid temperature changes, especially as you ascend or descend. These fluctuations can impact the performance of your vehicle's cooling system. Regularly check coolant levels and ensure the radiator is functioning correctly to prevent overheating.

5. Wildlife Encounters:

The Smoky Mountains are home to diverse wildlife, and encounters on the road are not uncommon. Keep your vehicle's headlights, windshield, and mirrors clean for better visibility during dawn and dusk when wildlife is more active. Additionally, be cautious and attentive to road signs warning of wildlife crossings.

Essential Vehicle Maintenance Tips:

1. Brake System Inspection:

Regularly inspect your vehicle's brake system, including brake pads, rotors, and fluid levels. If you notice any signs of wear or reduced braking efficiency, seek professional assistance immediately.

2. Tire Maintenance:

Check tire tread depth regularly and replace tires that are worn down. Consider investing in all-terrain or mountain-specific tires for enhanced traction on uneven surfaces. Don't forget to maintain proper tire pressure for optimal fuel efficiency and handling.

3. Engine Tune-Up:

Schedule regular engine tune-ups to ensure optimal performance, especially when driving at varying altitudes. Replace air filters and spark plugs as recommended by your vehicle's manufacturer.

4. Cooling System Check:

Monitor coolant levels and ensure the radiator is in good condition. Periodically flush the cooling system to remove any buildup and prevent overheating, particularly during temperature fluctuations in mountainous regions.

5. Headlights and Visibility:

Clean headlights, windshields, and mirrors regularly to maximize visibility, especially during dawn and dusk. Keep an eye out for wildlife crossing signs and adjust your speed accordingly.

Driving through the Smoky Mountains is an exhilarating experience, but it comes with its set of challenges. By prioritizing regular vehicle maintenance and addressing the specific needs of mountainous terrains, you can ensure a safer and more enjoyable journey. Remember that proactive care and attention to detail are key to conquering the twists and turns of Smoky Mountain drives. Whether you're a local exploring your backyard or a traveler seeking adventure, a well-maintained vehicle is your ticket to a seamless and memorable mountainous road trip.

The Future of Electric Vehicles (EVs): What Drivers Should Know

Tue, 12 Dec 2023 16:52:22 GMT

In the realm of modern transportation, Electric Vehicles (EVs) are not just a trend but a significant shift towards a cleaner, more sustainable driving future. The soaring popularity of EVs stems from their eco-friendly nature, technological advancements, and undeniable benefits, revolutionizing the automotive industry. For drivers considering this electric revolution, understanding the advantages, maintenance requirements, and crucial information about EVs becomes imperative.

The Appeal and Advantages of Electric Vehicles

One of the primary drivers behind the surge in EV popularity is their environmental impact—or rather, the lack thereof. Unlike traditional internal combustion engine vehicles, EVs produce zero tailpipe emissions. This factor alone significantly reduces the carbon footprint, appealing to environmentally conscious drivers seeking a greener mode of transportation.

Apart from their eco-friendly credentials, EVs offer a range of benefits to drivers. Electric cars boast impressive performance, offering swift acceleration and a smooth, quiet driving experience. The convenience of charging at home or using an expanding network of public charging stations has alleviated concerns about range limitations, making EVs a practical choice for daily commuting and longer journeys alike.

Understanding Electric Vehicle Maintenance

While EVs generally require less maintenance than traditional vehicles, they do have specific needs that drivers should be aware of. Central to an EV's operation is its battery system, typically powered by lithium-ion batteries. Over time, these batteries may degrade, impacting the vehicle's range and overall performance. However, continuous advancements in battery technology aim to enhance their durability and lifespan.

Regular maintenance and checks on an EV's battery health are crucial. Monitoring the battery's condition, ensuring adequate cooling, and managing temperature levels are vital aspects of maintaining an electric vehicle. Additionally, while EVs have fewer moving parts in their powertrains, routine inspections of components such as brakes, tires, and suspension systems remain essential for optimal performance and safety.

Service and Support for Electric Vehicles

For drivers venturing into the realm of electric vehicles, understanding where to seek maintenance and support is pivotal. Professional service centers, equipped with trained technicians familiar with EVs, play a crucial role in ensuring your electric car's longevity and performance.

Professional services for EVs typically include:

Battery Health Checks: Thorough assessments to evaluate the battery's condition and performance.
Diagnostic Services: Utilizing advanced tools to pinpoint and address any potential issues in the electric drivetrain.
Maintenance and Repairs: Tailored solutions for brakes, tires, suspension, and other essential components specific to EVs.
Charging System Inspections: Ensuring the efficiency and safety of the EV's charging system.

It's essential to seek out certified technicians knowledgeable about electric vehicles. Professional service centers equipped with the expertise to handle the unique needs of EVs can provide reliable maintenance and support, ensuring that your electric car remains in optimal condition.

Embracing the Future of Electric Vehicles

The future of transportation is undoubtedly electric, and understanding the intricacies of owning and maintaining an EV is becoming increasingly vital for drivers. Electric vehicles offer not only a clean and sustainable mode of transportation but also promise economic benefits in the long run.

As the automotive industry continues to evolve towards electrification, being well-informed about the benefits, maintenance, and available services for electric vehicles empowers drivers to make informed decisions. Embracing this shift towards EVs is not just about adopting a new type of vehicle—it's a conscious step towards a more sustainable future.

Whether considering an EV for its environmental impact, lower operating costs, or impressive performance, understanding the essentials of electric vehicle ownership ensures a seamless transition into this transformative era of driving.

In conclusion, as electric vehicles gain prominence in the automotive landscape, staying informed about their advantages and maintenance requirements is crucial. With the right knowledge and support, embracing the future of electric vehicles can lead to a more sustainable and fulfilling driving experience for every driver eager to be a part of this revolutionary journey.

The Evolution of Car Safety Features: Enhancing Vehicle Safety through Innovation

Wed, 22 Nov 2023 17:41:16 GMT

The history of automotive safety is a remarkable journey, marked by constant innovation and technological advancement. From the rudimentary beginnings of seatbelts to the sophisticated systems of Advanced Driver-Assistance Systems (ADAS), the evolution of car safety features has significantly transformed the automotive landscape, enhancing both vehicle safety and maintenance standards.

Early Milestones in Vehicle Safety

The conception of car safety measures dates back to the early 20th century. In 1885, Karl Benz patented the first automobile, marking the initial step toward modern transportation. However, it wasn't until the mid-20th century that significant strides in safety features were witnessed. In the 1950s, engineer Nils Bohlin invented the three-point seatbelt, a breakthrough that revolutionized vehicle safety. Volvo was the first to implement this life-saving invention in its vehicles in 1959, setting a new standard for the automotive industry.

Seatbelts: A Foundation of Safety

Seatbelts remain one of the most fundamental and universally adopted safety features in automobiles. As their usage became mandatory and awareness campaigns increased, seatbelt-related fatalities declined significantly. The National Highway Traffic Safety Administration (NHTSA) estimated that seatbelts saved over 15,000 lives in the United States in 2017 alone, underscoring their crucial role in preventing injuries during accidents.

Airbags: Supplementing Safety Measures

Airbags emerged as a complementary safety feature to seatbelts, providing an additional layer of protection during collisions. Initially introduced in luxury vehicles, airbags have now become a standard safety component in most cars. These inflatable cushions deploy rapidly upon impact, cushioning passengers and mitigating the risk of severe injuries, further reducing fatalities in accidents.

Anti-lock Braking System (ABS) and Electronic Stability Control (ESC)

The evolution of safety features expanded beyond passive restraints to active systems aimed at preventing accidents. ABS, introduced in the 1970s, revolutionized braking systems by preventing wheels from locking during hard braking, allowing drivers to maintain steering control. ESC, introduced later, augmented this by assisting drivers in maintaining control during skidding or loss of control situations, significantly reducing the risk of accidents.

Advanced Driver-Assistance Systems (ADAS): A Technological Leap

The advent of ADAS marks a paradigm shift in automotive safety. Leveraging cutting-edge technology like sensors, cameras, and artificial intelligence, ADAS comprises a suite of features designed to assist drivers and prevent accidents. Components include lane departure warning, adaptive cruise control, automatic emergency braking, and blind-spot detection, among others.

Impact on Vehicle Maintenance and Safety

The integration of advanced safety features has altered the landscape of vehicle maintenance. While enhancing safety, these systems require specialized maintenance and calibration to ensure optimal functionality. Regular inspection and servicing by trained professionals have become imperative to guarantee the proper operation of these sophisticated safety features.

Challenges and Future Prospects

Despite the remarkable advancements, challenges persist in the realm of automotive safety. Issues such as standardization of safety protocols, cybersecurity concerns related to interconnected systems, and affordability for widespread adoption remain significant hurdles. However, ongoing research and development promise even more sophisticated safety measures, including autonomous vehicles and AI-driven accident prevention systems.

The evolution of car safety features has been a transformative journey, marked by innovation, engineering prowess, and a relentless pursuit of safer transportation. From humble beginnings with seatbelts to the emergence of high-tech ADAS, each milestone has significantly contributed to reducing accidents and saving lives. While these advancements necessitate specialized maintenance, the benefits in terms of enhanced safety far outweigh the challenges. Looking ahead, the continued evolution of safety features promises a future where road accidents become increasingly preventable, ushering in an era of safer and more secure transportation for all.

For expert servicing, maintenance, and calibration of your vehicle's safety features, visit AAMCO Knoxville . Our skilled technicians understand the intricacies of modern safety systems and provide comprehensive services to ensure your vehicle operates at its safest. Contact us today to schedule an appointment and experience top-notch automotive care that prioritizes your safety on the road.

Spooky Car Stories: Tales of Haunted Vehicles

Mon, 23 Oct 2023 17:57:49 GMT

As Halloween approaches, it's the perfect time to delve into the world of eerie and strange occurrences. While most of us associate spooky stories with haunted houses and ghostly apparitions, you might be surprised to know that even cars have their fair share of supernatural tales and inexplicable events. These "haunted" vehicles have captured the imagination of many over the years, and they serve as a reminder that there's more to our trusty automobiles than meets the eye.

In this article, we will explore some spine-tingling car stories and superstitions that have sent chills down the spines of drivers and passengers alike. But we won't just indulge in ghostly tales; we'll also draw important lessons about car maintenance and safety that these stories can teach us. After all, the only thing more terrifying than a haunted car is a car that's not properly maintained.

Christine: The Possessed Plymouth Fury

Our first eerie car tale takes us into the world of fiction. Stephen King's novel "Christine" tells the story of a malevolent 1958 Plymouth Fury that seems to have a life of its own. The car becomes a killing machine, possessed by supernatural forces and determined to protect its owner at any cost.

Lesson: Regular Car Maintenance

While Christine's story may be pure horror fiction, it underscores the importance of regular car maintenance. Neglecting your vehicle can lead to a host of problems, from engine issues to safety hazards. To keep your car from becoming a "Christine" of sorts, make sure to adhere to a strict maintenance schedule. Regular oil changes, tire rotations, and check-ups can prevent unforeseen problems and ensure that your vehicle remains safe and reliable.

The Cursed Cars of James Dean

James Dean, a Hollywood icon of the 1950s, is known not only for his talent but also for his tragic death in a car accident. The Porsche Spyder he was driving that fateful day was said to be cursed, as it later caused various accidents and injuries to others who owned or interacted with it.

Lesson: Safe Driving Practices

The cursed cars associated with James Dean's tragic accident remind us of the importance of safe driving practices. Dean's death was a result of speeding and reckless driving, and it serves as a stark reminder that even the most glamorous of individuals can fall victim to road accidents. Always obey traffic laws, never drink and drive, and maintain a safe speed to protect yourself and others on the road.

The Ghost of Resurrection Mary

This famous ghost story takes place on Archer Avenue in Chicago, where a phantom hitchhiker named Resurrection Mary is said to appear. She's been spotted by numerous motorists, looking for a ride, only to mysteriously vanish from the car midway through the journey.

Lesson: Vehicle Security

The Resurrection Mary legend teaches us a lesson in vehicle security. It's essential to keep your car locked when you're driving, especially at night or in less populated areas. This simple act can help protect you from unwanted intrusions or dangerous situations.

The Vanishing Hitchhiker

Similar to the phantom hitchhiker, the vanishing hitchhiker story involves a driver picking up a hitchhiker who suddenly disappears from the car. There are countless variations of this tale, with the hitchhiker often having died in a car accident or under mysterious circumstances.

Lesson: Safe and Reliable Cars

In these stories, the cars themselves are not haunted, but rather, the presence of the vanishing hitchhiker implies a lingering sense of tragedy and unrest. These tales emphasize the importance of driving safe and reliable vehicles. Regular inspections, prompt repairs, and up-to-date safety features can make a significant difference in ensuring your car remains dependable on the road.

The Ghostly Ambulance

This tale involves a haunted ambulance that appears on desolate roads, often to help drivers in distress. However, once the ghostly ambulance arrives at the hospital, the patient is mysteriously gone, and the staff can't remember treating them.

Lesson: Vehicle Safety Equipment

While this story might seem purely supernatural, it serves as a reminder to keep your vehicle's safety equipment in top condition. Ensure your car is equipped with functioning airbags, seat belts, and other safety features. Regularly check and maintain your vehicle's safety equipment to ensure it will protect you in the event of an accident.

The Haunted Hitchhiker's Hand

In this chilling tale, a driver picks up a hitchhiker who vanishes, leaving behind only a hand on the passenger seat. The driver rushes to the police, only to find that the hand is made of plastic and intended as a grim prank.

Lesson: Be Wary of Pranks

While not a supernatural story, the haunted hitchhiker's hand serves as a cautionary tale about the unexpected. Always stay alert and be wary of pranks or tricks that might distract you while driving. Focusing on the road and avoiding distractions is vital for your safety.

The Phantom Car Crash

This story involves a witness who sees a car crash, only to find no trace of the accident or any victims when they return to the scene with the authorities.

Lesson: Stay Composed in Emergencies

While this story may seem fantastical, it's a reminder to stay composed in emergencies. If you witness a car accident, your prompt and appropriate response could make a significant difference in helping those involved. Knowing how to contact emergency services and provide basic first aid can be invaluable in such situations.

The Vanishing Vehicle

In some tales, drivers report their cars suddenly vanishing on lonely, desolate roads, only to reappear later, sometimes in completely different locations.

Lesson: Maintain Your Vehicle's Security Systems

While the vanishing vehicle story might sound far-fetched, it emphasizes the importance of modern vehicle security systems. In today's world, advanced GPS tracking, car alarms, and even smartphone apps allow you to keep an eye on your vehicle's whereabouts and security. These technologies can help you locate a stolen vehicle or ensure your car's safety.

Spooky car stories and superstitions remind us that our relationship with our vehicles goes beyond the mechanical and practical. These tales captivate our imagination and reveal our deep-seated connections with our cars. While some stories are purely supernatural, they often hide valuable lessons about car maintenance, safety, and responsible driving practices.

As Halloween approaches, take a moment to reflect on these tales of haunted vehicles, and remember that the most significant horror on the road is the potential for accidents and mishaps that can be prevented through proper maintenance and responsible driving. So, when you hit the road this Halloween season, make sure your car is in top shape, drive safely, and keep an eye out for any hitchhikers – real or phantom. Happy and safe driving!

Understanding Dashboard Warning Lights: What They Mean and What to Do

Tue, 19 Sep 2023 18:06:24 GMT

Your car's dashboard is like its communication center. It's where your vehicle speaks to you, conveying important information about its health and performance. Among the many signals your car sends your way, the most immediate and attention-demanding are the warning lights. These small, colorful symbols can sometimes be confusing, but they serve a vital role in ensuring your safety and your car's well-being. In this article, we'll take a deep dive into common dashboard warning lights, explaining what they mean and providing guidance on what to do when they illuminate. We'll also discuss when it's crucial to seek professional assistance.

Picture this: You're cruising down the highway, enjoying your drive when suddenly a bright, unfamiliar light pops up on your car's dashboard. Panic sets in as you wonder, "What does this mean? Is my car about to break down?"

Dashboard warning lights are like the car's way of saying, "Hey, we need to talk!" Ignoring them is akin to ignoring a persistent cough – it might seem harmless at first, but it could lead to more significant problems down the road. To avoid costly repairs and ensure your safety, it's essential to understand these warning lights and act promptly when they appear.

The Most Common Dashboard Warning Lights

Let's start by examining some of the most common dashboard warning lights and what they signify:

1. Check Engine Light

The check engine light, often depicted as an engine-shaped icon, is one of the most dreaded warning lights. It can indicate various issues, from minor problems like a loose gas cap to more severe engine or emissions system malfunctions. When this light comes on, it's best to have your car's diagnostics system checked to identify the specific issue.

What to do: If the check engine light comes on but your vehicle seems to be running fine, it's generally safe to drive cautiously to a mechanic for diagnosis. However, if the light is flashing or your car starts behaving erratically, it's best to pull over immediately and have it towed to a professional for inspection.

2. Battery Light

The battery light, typically resembling a battery icon, indicates an issue with your car's charging system. This could be a problem with the alternator, the battery itself, or the electrical system.

What to do: If the battery light illuminates while you're driving, it's a sign that your vehicle is running on battery power alone, and the alternator is not charging the battery. This situation can lead to a stalled engine. It's best to turn off any non-essential electrical components (e.g., A/C, radio) and head to a mechanic as soon as possible.

3. Oil Pressure Warning Light

The oil pressure warning light, often depicted as an oil can or oil drop icon, indicates a problem with your car's lubrication system. Low oil pressure can lead to engine damage if not addressed promptly.

What to do: When this light comes on, pull over and turn off your engine immediately. Check your oil level and add oil if it's low. If the oil level is fine, have your car towed to a mechanic, as running the engine with low oil pressure can be catastrophic.

4. Coolant Temperature Warning Light

The coolant temperature warning light looks like a thermometer submerged in liquid and indicates that your engine is overheating. Overheating can cause severe engine damage.

What to do: When this light comes on, pull over and let your engine cool down. Check the coolant level and add more if necessary. If the light persists, it's crucial to have your car inspected by a professional to identify and address the cause of the overheating.

5. Brake System Warning Light

The brake system warning light, often depicted as an exclamation point inside a circle, can have several meanings. It could indicate that your parking brake is engaged, low brake fluid, or a problem with the anti-lock braking system (ABS).

What to do: If the parking brake is not engaged and the light remains on, it's advisable to check the brake fluid level. If it's low, top it up and have your brakes inspected for leaks. If the light continues to illuminate, it's essential to seek professional assistance immediately, as brake issues compromise your safety.

6. ABS Warning Light

The ABS warning light, typically depicting the letters "ABS" inside a circle, signifies a problem with the anti-lock braking system. This system helps prevent wheel lockup during hard braking, improving stability and control.

What to do: While your car's conventional braking system should still work when the ABS light is on, it's crucial to have the ABS system checked. In slippery road conditions, the ABS system can make a significant difference in your ability to stop safely.

7. Airbag Warning Light

The airbag warning light, often depicting an airbag icon, indicates a problem with your car's airbag system. Airbags are a critical safety feature that can protect you in the event of a collision.

What to do: When this light comes on, it's essential to have your airbag system inspected by a professional. A malfunctioning airbag system may not deploy properly in an accident, putting you at risk of injury.

8. Tire Pressure Monitoring System (TPMS) Light

The TPMS light looks like a flat tire and illuminates when one or more of your car's tires has low pressure. Proper tire pressure is crucial for safety, fuel efficiency, and tire longevity.

What to do: Check your tire pressure using a gauge and add air to any underinflated tires to reach the recommended pressure. If the light persists, it's possible you have a puncture or a faulty TPMS sensor that needs professional attention.

9. Transmission Temperature Warning Light

The transmission temperature warning light, usually depicting a thermometer next to a gear, indicates that your transmission is overheating. This can lead to transmission damage and poor performance.

What to do: Pull over and let your vehicle cool down if this light comes on. Overheating can result from towing heavy loads or driving in extreme conditions. If the light remains on after cooling down, it's important to have your transmission inspected to prevent further damage.

10. Fuel Warning Light

The fuel warning light, often shaped like a gas pump, indicates that your fuel level is critically low. Running out of fuel can leave you stranded and potentially damage your fuel system.

What to do: When this light comes on, find a nearby gas station and refuel as soon as possible. Running on empty is not only inconvenient but also potentially harmful to your car's engine.

Responding to Dashboard Warning Lights

Understanding what these warning lights mean is the first step in responding to them effectively. However, it's equally important to know how to react when they illuminate. Here's a general guideline on how to respond to dashboard warning lights:

Stay Calm: When a warning light appears, try not to panic. Take a deep breath and focus on finding a safe place to pull over if necessary.
Check for Immediate Issues: Assess the situation. Are there any unusual noises or smells? Is your car behaving differently? This information can help you gauge the severity of the problem.
Refer to Your Owner's Manual: Your owner's manual is an invaluable resource when dealing with warning lights. It provides specific information about what each light means for your particular make and model of car.
Address the Issue: If you can identify a simple fix, like tightening the gas cap or adding oil or coolant, go ahead and do so. However, be cautious not to open the radiator cap or touch any hot engine components. If you're uncertain about the problem or don't have the necessary tools, it's best to leave it to the professionals.
Continue With Caution: If the warning light is not flashing and your vehicle seems to be running normally, you can continue driving to a nearby service center or mechanic. However, maintain a reduced speed and avoid heavy acceleration or braking.
Stop Driving if Necessary: If the warning light is flashing, your car is making unusual noises, or you notice a significant change in performance, it's crucial to pull over immediately and turn off the engine. Continuing to drive in these conditions can lead to further damage and potentially dangerous situations.
Call for Assistance: In situations where you cannot safely drive your vehicle, contact a tow service or roadside assistance. Explain the issue, and they will arrange for your car to be towed to a nearby service center.
Seek Professional Inspection: Once your car is in the hands of a professional mechanic, they can perform a comprehensive diagnosis using specialized tools and equipment to identify and resolve the issue. Follow their recommendations for repairs and maintenance.

When to Seek Professional Assistance

While some dashboard warning lights may have simple fixes, others indicate more complex and potentially dangerous problems. Here are some situations when it's crucial to seek professional assistance immediately:

Check Engine Light Flashing: If your check engine light is flashing, it usually means there's a severe issue with your engine that requires immediate attention. Continuing to drive in this condition can cause further damage.
Oil or Coolant Leaks: If you notice a pool of oil or coolant under your car when parked, it's a sign of a significant fluid leak. Continuing to drive can lead to engine damage or overheating.
Engine Overheating: If the coolant temperature warning light comes on, and your engine is visibly overheating (smoke or steam coming from the hood), pull over immediately and turn off the engine. Driving with an overheated engine can cause catastrophic damage.
Brake Issues: Any problems related to the brake system, including the brake system warning light, require immediate attention. Brake problems compromise your ability to stop safely.
Airbag Malfunction: If the airbag warning light is on, it means there's a problem with your car's airbag system. This could result in the airbags not deploying correctly in a collision, posing a severe safety risk.
Transmission Problems: A flashing transmission temperature warning light or noticeable issues with your car's transmission, such as slipping gears or harsh shifting, require professional inspection.
Multiple Warning Lights: If several warning lights come on simultaneously or your car exhibits multiple issues at once (e.g., engine overheating and low oil pressure), it's a sign of a more significant problem that needs immediate attention.
Unusual Noises or Smells: If you hear unusual noises, such as grinding, knocking, or hissing, or notice strange smells like burning rubber or gasoline, these could indicate serious issues that require professional diagnosis.

Remember that modern vehicles are equipped with advanced diagnostic systems that can detect problems early. Ignoring warning lights or delaying necessary repairs can lead to more extensive and costly issues down the line.

Dashboard warning lights are your car's way of communicating with you, alerting you to potential problems and ensuring your safety on the road. Understanding what these lights mean and how to respond when they illuminate is essential for maintaining your vehicle's health and preventing costly repairs. In many cases, addressing warning lights promptly can save you from more significant issues and keep you safe on the road.

While some warning lights may have straightforward solutions, others require the expertise of a professional mechanic. Never ignore a flashing warning light or signs of significant issues like fluid leaks, overheating, or unusual noises. Seeking immediate assistance when necessary can help you avoid accidents, protect your vehicle, and ensure your peace of mind while driving. So, the next time a warning light appears on your dashboard, remember that your car is trying to tell you something – and it's best to listen. Don’t forget to schedule checkups for your vehicle!

When the Temperature Rises: Spotting the Signs of an Overheating Transmission

Wed, 23 Aug 2023 18:25:33 GMT

This blog article will explore the common indicators that may point to a transmission overheating. By understanding these warning signs and following the appropriate measures, vehicle owners can proactively address the problem and prevent further damage. Whether you have experienced some of these signs or want to enhance your knowledge, this article will provide valuable insights to help you effectively tackle an overheating transmission.

Why Your Transmission Matters

Your transmission is the vital intermediary between the engine and the wheels, responsible for efficiently transferring power and torque. Its ability to enable smooth gear shifting, facilitate acceleration and deceleration, and distribute power appropriately ensures optimal performance, fuel efficiency, and a pleasant driving experience.

Signs of an Overheating Transmission

1. Burning Odor

One of the significant signs of an overheating transmission is the presence of a strong burning odor, often described as a "burnt" smell. If you notice this distinct odor inside the vehicle or near the transmission area, it likely indicates an overheating transmission. The burning odor arises from various factors associated with excessive heat within the transmission.

When a transmission overheats, the fluid inside it can break down, losing its effectiveness as a lubricant and coolant. This leads to increased friction and heat generation, resulting in the characteristic burning smell. Additionally, the intense heat can cause the transmission fluid to oxidize and form deposits on the internal parts of the transmission. These deposits can burn and emit the burnt odor. Overheating can also cause the transmission fluid itself to reach temperatures where it starts to burn, further contributing to the smell.

The burning odor may become more noticeable during or after extended periods of driving. If you detect this smell, it is crucial to address the issue promptly to prevent further damage to the transmission. Driving with an overheating transmission can worsen the problem and potentially lead to more severe issues.

If you encounter a burning odor, it is advisable to stop driving the vehicle, allow it to cool down, and have the transmission inspected by a qualified technician. They can diagnose the cause of the overheating and perform the necessary repairs or maintenance. This may involve checking the transmission fluid level, replacing damaged components, or addressing any issues with the cooling system. By promptly addressing the overheating, you can preserve the health and functionality of your vehicle's transmission, preventing more extensive damage that could result in costly repairs or transmission failure.

2. Fluid Leaks:

Fluid leaks are common signs of overheating and should be taken seriously. When a transmission overheats, it puts excessive stress on the seals and gaskets. The high temperatures can cause these seals and gaskets to deteriorate, warp, or develop leaks. You may observe fluid pooling underneath your vehicle or dripping from the transmission area.

The fluid that leaks from an overheating transmission is typically red or brownish in color but may vary depending on the make and model of your vehicle. It also has a distinct odor. It is crucial to identify the source of the leak and address it promptly. Low fluid levels due to leaks can further exacerbate the overheating problem and lead to more severe damage.

Leaking transmission fluid not only contributes to the overheating issue but also poses a risk to the overall functionality of the transmission. Transmission fluid plays a vital role in lubricating, cooling, and providing hydraulic pressure within the transmission system. Insufficient fluid levels or leaks can compromise these functions, leading to increased friction, inadequate lubrication, and poor transmission performance.

If you notice fluid pooling or dripping from the transmission area, have your vehicle inspected by a qualified technician. They can identify the source of the leak and determine the appropriate repairs or maintenance needed. This may involve replacing damaged seals or gaskets, fixing loose connections, or addressing other transmission-related issues contributing to the fluid leak. Resolving the fluid leaks will help ensure that your transmission operates optimally, reducing the risk of overheating and preventing potential damage to the transmission system.

3. Slipping Gears

When a transmission overheats, it can result in the gears slipping or not engaging correctly, which can noticeably impact your vehicle's performance. Slipping gears occur when the transmission fails to maintain a firm and consistent connection between the engine and the wheels. This can lead to various issues affecting the overall driving experience.

One common symptom of an overheating transmission is a delay in acceleration or a lack of power accelerating. You may notice that when you step on the gas to increase your speed, the vehicle takes longer than usual to respond or struggles to reach the desired speed. This delayed or weakened acceleration is often a result of the transmission slipping, where the intended power transfer from the engine to the wheels is compromised.

In addition to the delayed acceleration, you may experience a lack of power during gear changes. When the transmission slips, it fails to engage the gears firmly, causing a loss of torque and a decrease in overall power delivery. This can manifest as a hesitation or jerking motion during gear shifts, where the vehicle feels momentarily disconnected or struggles to smoothly transition from one gear to another.

4. Warning Lights:

Transmission Warning Light: A transmission temperature warning light is a vital feature found in many vehicles to monitor the temperature of the transmission fluid. When the transmission temperature exceeds a safe operating threshold, the warning light will illuminate on the dashboard, serving as an important alert to the driver.
Check Engine Light: The Check Engine Light (CEL) may illuminate if you have an overheating transmission. While the Check Engine Light primarily monitors the engine's performance and emissions, it is also connected to various sensors and systems in the vehicle, including the transmission. An overheating transmission can trigger certain fault codes or abnormalities detected by the engine control unit (ECU), causing the Check Engine Light to turn on.
Engine Temperature Warning Light: While the engine and transmission are separate components, they are interconnected, and an overheating transmission can potentially lead to engine overheating. The transmission relies on the engine's cooling system to regulate its temperature, and if the transmission overheats, it can strain the engine's cooling system. The excessive heat from the transmission can cause the engine coolant to heat up as well, potentially overwhelming the cooling system and resulting in engine overheating. Therefore, promptly addressing any signs of an overheating transmission is crucial to prevent increased heat transfer to the engine. Having both the transmission and engine inspected by a qualified technician is advisable to diagnose and resolve any underlying issues, ensuring the proper functioning of both systems and preventing potential damage.

5. Unusual Noises or Vibrations:

Overheating can have detrimental effects on the internal components of the transmission. As the transmission reaches elevated temperatures, various parts, such as bearings, gears, and clutches, can expand beyond their optimal operating tolerances. This expansion can increase friction, accelerated wear, and potential damage to these vital components.

One of the signs that your transmission is overheating is the presence of unusual noises. As the components within the transmission experience excessive heat and wear, you may hear distinct noises like grinding, whining, or other abnormal sounds emanating from the transmission area. These noises can indicate damaged bearings, worn gear teeth, or insufficient lubrication due to degraded transmission fluid. The noises may vary in intensity and be more noticeable during certain driving conditions, such as when accelerating, decelerating, or shifting gears.

In addition to unusual noises, an overheating transmission can manifest in vibrations felt in the transmission area or throughout the vehicle. These vibrations can be attributed to the compromised functionality of the transmission components. The increased friction, wear, or misalignment caused by overheating can disrupt the smooth operation of the transmission, resulting in vibrations that may be felt in the gear shifter, the floor, or even the entire vehicle.

What Can Cause an Overheated Transmission?

When your car transmission overheats, several undesirable effects can occur, potentially leading to significant damage or transmission failure if not addressed promptly. Here are some of the seven most common causes of an overheated transmission:

Insufficient Transmission Fluid: Low or inadequate transmission fluid levels can lead to overheating. Transmission fluid plays a vital role in lubricating and cooling the transmission components. If the fluid level is too low, there may not be enough fluid to adequately dissipate heat, resulting in increased friction and overheating.
Transmission Fluid Leaks: Fluid leaks are a significant cause of transmission overheating. Leaks can occur due to damaged seals, gaskets, or transmission cooler lines. When the fluid level drops due to leaks, it reduces the cooling and lubrication capacity, leading to elevated temperatures within the transmission.
Overworking the Transmission: Excessive stress on the transmission can cause it to overheat. Activities such as towing heavy loads, driving in hilly terrain, or carrying excessive cargo can increase the workload on the transmission, leading to higher heat generation.
Malfunctioning Cooling System: The transmission relies on the engine's cooling system to regulate its temperature. A malfunctioning radiator, cooling fan, or thermostat can disrupt the proper cooling of the transmission fluid, resulting in overheating.
Clogged Transmission Cooler: The transmission cooler, responsible for cooling the transmission fluid, can become clogged with debris, dirt, or contaminants over time. A restricted or blocked transmission cooler can impede the heat dissipation process, causing the transmission to overheat.
Faulty Transmission Control Module: The transmission control module (TCM) regulates the operation of the transmission. If the TCM malfunctions or sends incorrect signals, it can lead to improper shifting, excessive slipping, and increased heat generation, ultimately resulting in transmission overheating.
Overdue Transmission Service: Neglecting regular maintenance, such as fluid changes and filter replacements, can contribute to an overheating transmission. Old or degraded transmission fluid loses its ability to effectively lubricate and cool the transmission components, increasing the risk of overheating.

Save Money and Keep Safe with a Healthy Transmission!

Recognizing the signs of an overheating transmission and understanding the importance of taking immediate action can save you from costly repairs and potential vehicle breakdowns. Your vehicle's transmission is a vital component that requires proper care and maintenance to ensure optimal performance and longevity. Regularly checking fluid levels, promptly addressing leaks, maintaining a functional cooling system, and seeking professional help are essential steps in preserving the health of your transmission. By staying attentive to the warning signs and following the proper steps outlined in this article, you can protect your transmission from overheating, enjoy a smoother driving experience, and extend the lifespan of your vehicle. Remember, when it comes to transmission issues, prevention and early intervention are key to keeping your car on the road and avoiding unnecessary inconvenience and expenses.

Keep Your Transmission’s Cool: Trust AAMCO!

If you're experiencing any signs of an overheating transmission or require professional transmission services in Knoxville, TN, don't wait until it's too late. Contact your AAMCO Center in Knoxville, TN, today for expert diagnosis, maintenance, and repairs. Our skilled technicians specialize in transmission systems and have the knowledge and experience to address any transmission-related issues promptly. Trust us to provide reliable and efficient service to keep your vehicle running smoothly. Don't let an overheating transmission put you on the sidelines—let AAMCO get you back on the road quickly and safely!

The Top 5 Signs of Transmission Trouble: Don't Ignore These Warning Signs

Wed, 23 Aug 2023 14:11:10 GMT

Your vehicle's transmission is a critical component that plays a vital role in ensuring smooth and efficient operation. It's responsible for transferring power from the engine to the wheels, enabling your car to shift gears seamlessly and navigate different driving conditions. However, like any complex mechanical system, transmissions can experience issues over time. Recognizing the signs of transmission trouble early on can save you from more extensive and costly repairs down the road. In this article, we'll delve into the top 5 signs of transmission problems that you should never ignore.

Delayed or Rough Gear Shifts

One of the most common indicators of transmission trouble is experiencing delays or rough shifts when changing gears. You might notice a hesitation or lurching sensation when shifting from "Park" to "Drive" or during gear changes while driving. This could be caused by various factors, including worn transmission components, low fluid levels, or even a malfunctioning transmission control module. Ignoring these signs could lead to further damage and potentially leave you stranded.

What to Do:

If you notice delayed or rough gear shifts, it's essential to have your vehicle inspected by a qualified mechanic. A professional technician can diagnose the issue and recommend the necessary repairs or maintenance, which might involve changing the transmission fluid, replacing worn parts, or addressing electronic control problems.

Unusual Noises

Unusual noises coming from your vehicle are often a clear indication that something is amiss. If you hear grinding, whining, clunking, or buzzing sounds while driving, especially during gear changes, it's likely that your transmission is experiencing problems. These noises could be caused by damaged gears, worn bearings, or even a malfunctioning torque converter.

What to Do:

Any unusual noises should be promptly addressed by a professional mechanic. Ignoring strange sounds can lead to more severe transmission damage and potentially necessitate a full transmission replacement. Diagnosing the source of the noise and making the necessary repairs early can prevent further complications.

Transmission Fluid Leaks

Transmission fluid serves as both a lubricant and a coolant for the transmission system. If you notice reddish or brownish fluid pooling under your vehicle, it's a clear sign of a transmission fluid leak. Low fluid levels can lead to inadequate lubrication and overheating, which can result in significant transmission damage over time.

What to Do:

If you spot transmission fluid leaks, it's crucial to address the issue promptly. Check your vehicle's transmission fluid levels using the dipstick, and if necessary, top up the fluid to the recommended level. However, it's important to have a professional mechanic identify and repair the source of the leak to prevent further fluid loss and potential transmission damage.

Burning Odor

A burning smell emanating from your vehicle could indicate a variety of problems, and when it comes to transmissions, it's often associated with overheating transmission fluid. Overheating can lead to fluid breakdown, which in turn affects the performance and longevity of the transmission components.

What to Do:

If you detect a burning odor while driving, it's essential to address the issue promptly. First, check the transmission fluid levels and condition. If the fluid is low or appears dark and burnt, it's a sign of a potential problem. It's recommended to have your vehicle inspected by a professional technician who can diagnose the issue and recommend the appropriate course of action.

Dashboard Warning Lights

Modern vehicles are equipped with sophisticated onboard diagnostic systems that can detect various issues, including transmission problems. If your vehicle's dashboard lights up with a "Check Engine" or "Transmission" warning light, it's crucial not to ignore it. These lights indicate that the vehicle's computer has detected a fault in the transmission system.

What to Do:

When a warning light appears on your dashboard, it's advisable to have your vehicle scanned for error codes as soon as possible. Many auto parts stores and service centers offer free diagnostic scans. Once you've identified the specific issue causing the warning light, you can take the appropriate steps to address the problem.

Don’t Skip Your Checkup

Your vehicle's transmission is a complex and essential component that requires proper care and attention. Ignoring signs of transmission trouble can lead to more extensive and costly repairs down the line. If you experience delayed or rough gear shifts, hear unusual noises, notice transmission fluid leaks, detect a burning odor, or see dashboard warning lights, it's crucial to take action promptly. Regular maintenance, including checking transmission fluid levels, following manufacturer-recommended service intervals, and consulting with professional mechanics, can help you identify and address transmission issues before they escalate. By paying attention to these warning signs and acting quickly, you can keep your vehicle running smoothly and extend the lifespan of your transmission. If you think your vehicle may be having transmission problems, contact us today!

4 Signs Your Suspension System May Need Maintenance

Tue, 20 Jun 2023 14:03:21 GMT

Smooth and comfortable driving depends on a well-maintained suspension system, yet it's a component of our vehicles that often goes unnoticed until problems arise. Your suspension system plays a vital role in absorbing shocks from the road, providing stability, and ensuring optimal tire contact with the pavement. Over time, wear and tear can take a toll on its performance, compromising your safety and driving experience. That's why it's crucial to be aware of the signs that your suspension system may need maintenance. In this article, we'll explore common indicators that it's time to give your suspension system the attention it deserves, helping you stay ahead of potential issues and high repair bills.

Understanding Your Suspension System

Your vehicle's suspension system serves a critical purpose: to ensure a smooth and controlled ride by absorbing shocks from the road. It acts as a buffer between the wheels and the chassis, minimizing the impact of bumps, potholes, and uneven surfaces. This enhances your driving comfort and contributes to vehicle stability and handling. The suspension system consists of several key components working together harmoniously. These components include:

Shocks : Shocks, also known as shock absorbers, are hydraulic or gas-filled components that dampen the up-and-down motion of your vehicle's suspension. They absorb the energy generated by bumps and uneven terrain, preventing excessive bouncing and ensuring better tire contact with the road.
Struts : Struts are similar to shocks but have an additional structural role. They provide support to the suspension system and are commonly integrated with other components, such as the coil spring and the steering knuckle.
Springs : Springs are responsible for supporting the weight of the vehicle and absorbing vertical motion. They come in different forms, including coil springs and leaf springs, and provide the necessary flexibility to keep the tires in contact with the road while minimizing jolts and vibrations.
Control Arms : Control arms, also called A-arms or wishbones, connect the suspension components to the chassis of the vehicle. They play a crucial role in maintaining proper wheel alignment and controlling the movement of the wheels.
Bushings : Bushings are small rubber or polyurethane components that sit between metal parts of the suspension system, such as control arms and sway bars. They provide cushioning, reduce friction, and absorb vibrations, contributing to a more even and quieter ride.

These components work together to ensure a balanced and responsive suspension system. However, over time, they can wear out or become damaged, compromising the system's effectiveness and leading to a range of problems. Recognizing the signs of potential issues is crucial in maintaining your vehicle's overall performance and safety.

1. Uneven tire wear and alignment issues

Worn-out or damaged suspension components can significantly impact your tires, leading to uneven tire wear and misalignment. As the suspension system deteriorates, components like shocks, struts, and springs become less effective at absorbing shocks and vibrations from the road. This can result in uneven tire wear, where certain areas of the tire experience increased friction and wear while other areas remain relatively unaffected. Uneven tire wear not only decreases tire lifespan but also reduces traction and performance, leading to a bumpy ride and compromised handling.

Additionally, failing suspension components can contribute to misalignment issues. Control arms and bushings play a crucial role in maintaining proper wheel alignment. When these components wear out, your wheels can shift out of alignment, causing misalignment. Misaligned tires result in uneven tire wear, affecting steering stability and tracking, further impacting the overall driving experience. Regular inspection and maintenance of the suspension system are crucial to prevent irregular tire wear, misalignment, and to ensure a smoother ride and extended tire life.

2. Excessive bouncing or a rough ride

A worn-out or damaged suspension system fails to provide adequate shock absorption, causing the vehicle to bounce excessively over bumps and uneven surfaces. The suspension system's role is to dampen the up-and-down motions caused by road irregularities, ensuring a smooth and controlled ride. However, as the components deteriorate, their ability to absorb shocks diminishes.

When the shocks or struts wear out, they lose their ability to regulate the movement of the springs and control the rebound of the suspension. As a result, the worn-out suspension system cannot effectively absorb the impact of bumps, causing the vehicle to bounce excessively. This leads to a jarring and uncomfortable ride and compromises stability and handling. A compromised suspension system also reduces tire grip and traction, further affecting stability and control.

Promptly addressing a worn-out or damaged suspension system is essential to restoring proper shock absorption. By replacing worn-out components, such as shocks or struts, you can regain a smoother ride, improved handling, and enhanced safety by ensuring better tire contact with the road.

3. Squeaking, Creaking, and Clunking Sounds

If you hear squeaking, creaking, and clunking noises while driving, it could indicate underlying issues with your suspension components.

Squeaking or creaking noises often occur when bushings or joints become worn out or lose their lubrication. These components are vital in minimizing friction and allowing smooth movement within the suspension system. When they wear down, they can produce annoying squeaks or creaks. Hearing these noises and not having your vehicle inspected could lead to potential damage to the suspension components.

On the other hand, clunking noises are typically associated with loose or damaged suspension parts. A distinct clunking sound, particularly when going over bumps or uneven surfaces, may suggest problems with components like control arms, ball joints, or sway bar links. Loose or worn-out parts can cause excessive movement or play in the suspension, leading to a clunking sound. Ignoring these noises can further damage the suspension system and compromise your vehicle's stability and control.

If you notice squeaking, creaking, or clunking noises while driving, it's essential to have your suspension system inspected by a professional. A qualified technician can identify the source of the noise and determine if any components require repair or replacement. By addressing these issues promptly, you can restore a quieter and smoother ride while ensuring your vehicle's overall safety and performance.

4. Steering wheel vibrations or drifting:

One common symptom of worn-out suspension components is vibrations felt through the steering wheel. As the suspension system deteriorates, it becomes less capable of absorbing the shocks and vibrations from the road surface. This can cause vibrations to transfer to the steering mechanism, resulting in a noticeable shake or tremor in the steering wheel. These vibrations can vary in intensity, ranging from minor annoyances to severe shaking, depending on the extent of wear and the condition of the components.

Another indication of suspension components that may need maintenance is a drifting sensation while driving. When the suspension system functions properly, it helps keep the vehicle stable and centered on the road. However, worn-out components can compromise this stability, leading to a drifting sensation where the vehicle tends to pull to one side or feels less responsive to steering inputs. This drifting can be more pronounced during cornering or when driving on uneven surfaces, as the worn-out components struggle to maintain proper alignment and control.

If you experience vibrations or a drifting sensation while driving, it's crucial to have your suspension system inspected by a professional. They can assess the condition of the components and recommend necessary repairs or replacements. Addressing these symptoms can restore proper steering control, eliminate vibrations, and ensure a safer driving experience.

Take Action for a Smooth, Safe Ride!

If you notice any signs indicating potential issues with your suspension system, it's crucial not to ignore them. Addressing suspension problems promptly can help prevent further damage, ensure your safety on the road, and prolong the lifespan of your vehicle. If you're experiencing any of these symptoms or have concerns about your suspension system, we’re here to help you at AAMCO Knoxville, TN . Our expert technicians can perform a comprehensive inspection, diagnose the problem accurately, and provide the necessary maintenance or repairs to restore your suspension system's performance. Don't let worn-out or damaged suspension components compromise your driving experience. Schedule an appointment today to get back to enjoying the road!

Going the Distance: Prepping Your Vehicle for Spring Road Trips

Tue, 16 May 2023 13:50:51 GMT

Spring is a perfect time for a road trip with sunny days, comfortable temperatures, and a landscape bursting with flowers and new growth. Whether you're planning a day trip to a nearby park or a multi-day adventure, there's nothing quite like the feeling of hitting the highway with your friends or family. But before you start packing your bags and filling up the tank, it's important to ensure your vehicle is ready for the journey ahead. Taking the time to prep your vehicle before a road trip can help prevent breakdowns, ensure your safety on the road, and make your travels smoother and more enjoyable. This article will explore some essential tips for prepping your vehicle for a spring road trip.

Preparing for Your Spring Travel: What to Check

Tires

Checking your tires is one of the most critical aspects of prepping your vehicle for a spring road trip. Your tires are your vehicle's only contact with the road, so ensuring they are in good condition is essential.

First, check your tire pressure. Proper inflation is crucial for safety, fuel efficiency, and tire longevity. Check your car's owner manual or the sticker inside the driver's side door jamb for the recommended pressure. Then, use a tire gauge to check the pressure in all four tires, including the spare. If any tires are underinflated, inflate them to the correct pressure.

Underinflated tires on your car can pose several risks, including increased braking distance, making it more difficult to stop your vehicle quickly in an emergency. Underinflated tires can cause uneven tire wear, leading to premature tire failure and the need for early tire replacement. You can also run the severe risk of a tire blowout, which can cause your car to lose control and potentially result in a serious accident.

It's important to regularly check your tire pressure and inflate them to the manufacturer's recommended level to avoid these risks and ensure your car is safe to drive.

It's also important to check your tire tread depth. Tires with low tread (sometimes referred to as “bald tires”) can reduce your vehicle’s grip on the road and increase your risk of hydroplaning or skidding in inclement weather or emergencies. The minimum legal tread depth is 2/32 of an inch, but having at least 4/32 of an inch is recommended for safe driving. To check the tread depth, use the Quarter Test for checking the tread depth of your tires. Here's how to do it in three easy steps:

Place a quarter into the tire tread with George Washington's head facing down.
Ensure that the top of George Washington's head faces inward towards the tire.
Look at the tire and check how much of George Washington's head is visible.

If the top of George Washington's head is visible, your tire tread depth is less than 4/32 of an inch, and it's time to replace your tires.
If the tire tread covers the top of George Washington's head, your tires are still in good shape.

Brakes

Your brakes are one of your vehicle's most important safety features, and they play a critical role in keeping you and your passengers safe on the road. Brakes create friction between the brake pads and the brake rotors, which slows down and stops your vehicle. Over time, your brake pads wear down and need to be replaced, and your brake fluid can become contaminated or low, affecting your stopping ability. That's why it's important to have your brakes inspected regularly and to replace them when necessary. A spring road trip is the perfect time to make sure that your brakes are in good working order. If you notice any signs of brake problems, such as squeaking, grinding, or vibrations when you apply the brakes, take your car to an auto technician as soon as possible. Neglecting your brakes can put you and your passengers in danger and lead to expensive repairs down the road.

Fluids

Fluids are crucial in keeping your vehicle running smoothly. Checking them before a road trip can help prevent breakdowns and other problems. Before hitting the road, you should check three fluids:

Oil : Your engine needs oil to lubricate its moving parts and prevent premature wear and overheating. Check your oil level with the engine cold and parked on level ground. Pull out the dipstick, wipe it clean, reinsert it, and then pull it out again. The oil level should be between the two marks on the dipstick. If it's low, add more oil as needed.
Coolant : Your engine needs coolant to regulate temperature and prevent overheating. Check your coolant level when the engine is cold, and the vehicle is on level ground. The coolant reservoir is located near the radiator and has a minimum and maximum level. If the level is low, add more coolant.
Windshield wiper fluid : Good visibility is essential for safe driving, so make sure that your windshield wiper fluid level is topped up. Check the fluid level by looking at the reservoir under the hood. If it's low, just add more fluid. Do not use plain water or any other cleaning solution in place of windshield wiper fluid, which can damage your windshield wiper blades, create streaking, or corrode the metal parts of your wiper system.

Checking these fluids can help prevent costly breakdowns and ensure your vehicle is ready for a long road trip. If you're uncomfortable checking these fluids, have a trusted auto technician inspect them before your road trip.

Battery

A reliable battery is essential for any successful road trip. Your vehicle's battery provides the power needed to start the engine and operate the electrical systems, such as the lights, radio, and A/C. If your battery is weak or dead, you won't be able to start your vehicle, and you may end up stranded on the side of the road.

To ensure your battery is reliable for your spring road trip, consider having it checked by a professional technician. They can perform a battery load test to determine its condition and recommend replacement if necessary.

Emergency Kit

An emergency kit in your vehicle is essential, especially during a road trip. Emergencies can happen anytime, and having the right supplies on hand can help you stay safe and comfortable until help arrives. When putting together an emergency kit for your vehicle, here's a list of things that should be in an emergency kit in your vehicle for a road trip:

First aid kit : Including bandages, gauze pads, antiseptic wipes, adhesive tape, pain relievers, and any necessary prescription medications.
Flashlight : Either a rechargeable flashlight or one with extra batteries.
Blankets or sleeping bags : For warmth and comfort if you get stranded.
Non-perishable snacks for kids and adults : Energy bars, dried fruit, and nuts.
Bottled water : Aim for at least one gallon per person.
Multi-tool : Such as a Swiss Army Knife or Leatherman tool.
Duct tape : For temporary repairs.
Jumper cables : In case of a dead battery.
Tire pressure gauge : To monitor tire pressure
Spare tire : Make sure it's in good condition and properly inflated.
Jack and lug wrench : For changing a tire.
Roadside flares or reflectors : To alert other drivers of an emergency.
Change of clothes fit for the season and/or umbrella : For protection in any weather.
Map and compass : In case your GPS or phone fails.
Cell phone charger : Precharged or one that works in the car.
Fire extinguisher : In case of a small fire.
Window breaker and seatbelt cutter : To use during an accident or emergency.

Remember to periodically check and replace any expired or damaged items in your emergency kit to ensure that it's always ready to go in case of an emergency.

Get Ready for the Road Ahead This Spring With AAMCO!

Looking for a comprehensive pre-trip inspection and seasonal maintenance? AAMCO Knoxville has your covered! Prepping your vehicle before a spring road trip is essential for a safe and successful journey. Taking the time to properly prepare your vehicle before hitting the road can help you enjoy your journey with peace of mind, knowing that you are well-prepared for any situation that may arise. Our expert technicians will check your brakes, tires, fluids, filters, belts, hoses, and more to ensure your vehicle is in top shape for any road trip. Schedule an appointment today!

5 Common Mistakes That Can Kill Your Transmission

Tue, 11 Apr 2023 13:40:07 GMT

Our transmission is a critical component in your vehicle. Responsible for transmitting power from the engine to the wheels, a malfunctioning transmission can cause significant problems, leaving you stranded and facing high repair bills. Unfortunately, many drivers unwittingly engage in behaviors that can lead to premature transmission failure. Several common mistakes can ruin your vehicle's transmission, from neglecting routine maintenance to poor driving behaviors. We’ll explore five of the most common mistakes and provide tips to help you avoid them, ensuring your transmission stays in good working order for many years to come.

Mistake #1: Neglecting Regular Transmission Maintenance

Transmission maintenance is essential because the transmission is a critical component of your vehicle's drivetrain and is responsible for transferring power from the engine to the wheels. Neglecting transmission maintenance can lead to a variety of problems, including reduced performance, decreased fuel efficiency, and even complete transmission failure.

Regular transmission maintenance, such as fluid and filter changes, can help ensure your transmission stays clean and free from contaminants that can prematurely age its components. Over time, transmission fluid can break down and become contaminated with dirt, metal shavings, and other debris. This can cause the fluid to lose its ability to lubricate and cool the transmission, leading to increased friction, heat buildup, and overheating.

In addition to regular fluid and filter changes, other transmission maintenance tasks include inspecting and adjusting the transmission bands and clutches, checking the transmission linkage, and performing a diagnostic scan to detect any issues before they become significant problems.

By keeping up with regular transmission maintenance, you can help extend your transmission's life and prevent costly repairs or even the need for a complete transmission replacement.

Mistake #2: Ignoring Warning Signs of Transmission Problems

Ignoring or not recognizing the signs of transmission failure can be very dangerous for your vehicle, as it can lead to complete transmission failure. Here are some signs of serious trouble that you should never ignore:

Warning Dashboard Lights

Not all vehicles have a dedicated warning light for transmission issues, but many modern vehicles do. If your car or truck does have a transmission warning light, it will typically be a gear-shaped icon, and it may be yellow or red, depending on the severity of the problem.

Even if your vehicle does not have a transmission warning light, other warning lights may come on when there is an issue with the transmission. For example, the check engine light (CEL) may come on if there is a problem with your vehicle's transmission and other systems. Additionally, some vehicles have a warning light for the transmission fluid level or temperature, indicating a transmission problem.

Strange Noises

Any unusual noise coming from your transmission can indicate a wide variety of issues. These noises and sensations can differ from one type of transmission to another.

Whining, humming, or buzzing sounds are common in a vehicle with an automatic transmission that is having trouble, especially when the vehicle is in gear. The vehicle may also shake or jerk when shifting gears or during acceleration, and there may be a delay in gear engagement or slippage, where the engine revs, but the vehicle does not move forward or accelerate as it should.

In a vehicle with a manual transmission , grinding or scraping sounds may be produced when shifting gears, especially when shifting into first or reverse gear. The clutch may also slip, causing the engine to rev without the vehicle moving forward, and there may be difficulty shifting gears or a feeling of resistance in the gear shift lever.

If you have a CVT transmission , you may hear a whining or humming sound that increases in pitch with acceleration. This sound may be more noticeable than in other types of transmissions because there are no distinct gear changes.
In addition to the whining or humming sound, a failing CVT may also produce a jerking or shuddering sensation during acceleration, a delay or hesitation when shifting, or a burning smell due to overheating. These symptoms can indicate issues with the CVT's belts, pulleys, or other components.

It's important to note that the specific sounds and symptoms of a failing transmission can vary depending on the type and severity of the problem, as well as the make and model of the vehicle and its transmission type. If you suspect your transmission is failing, it's best to have it inspected and diagnosed by a qualified transmission expert as soon as possible.

Slipping Gears (Manual and Automatic Transmissions)

Slipping gears is a common transmission problem that occurs when the transmission cannot properly engage a gear or maintain its position in the selected gear. This can happen for various reasons, including low transmission fluid levels, worn clutch bands or gears, and damaged seals.

Not paying attention to slipping gears can hurt your transmission in several ways:

Increased wear and tear : Slipping gears can cause excessive wear and tear on the transmission components, resulting in premature failure of the transmission and the need for costly repairs.
Reduced performance : Slipping gears can also reduce your vehicle's performance. You may notice that your vehicle is sluggish or unresponsive when you try to accelerate, and it may take longer to shift into the correct gear.
Serious safety risks : Slipping gears can also be a safety risk, as it can cause unexpected changes in vehicle speed or acceleration. This can be particularly dangerous if driving on a busy highway or in heavy traffic.

If you notice that your transmission has slipping gears, it's important to have it checked by a qualified transmission expert immediately. Ignoring this issue can lead to more serious problems down the road, including complete transmission failure. Regular maintenance, which includes checking and replacing the transmission fluid as needed, can help prevent slipping gears and other transmission issues from occurring in the first place.

Mistake #3: Exceeding Your Vehicle’s Towing Capacity

The towing capacity varies depending on the make and model of your vehicle, as well as other factors such as the engine size, transmission type, and axle ratio.

To determine the towing capacity of your vehicle, consult your owner's manual or contact the manufacturer directly. The owner's manual should have a section that provides the maximum weight your vehicle can tow and any additional guidelines or recommendations for towing.

Exceeding the towing capacity of your vehicle can put additional strain on your transmission, which can cause damage over time. In addition to consulting your owner's manual, you should also consider other factors, such as the weight of the trailer, the weight of any cargo you're carrying, and the terrain and driving conditions you'll encounter while towing.

It's always better to err on the side of caution and stay well within your vehicle's towing capacity to avoid transmission problems and overheating while towing.

Note: Your vehicle's weight capacity and towing capacity are separate measurements. Your vehicle's weight capacity refers to the maximum weight it can carry, including passengers and cargo, and is commonly known as the gross vehicle weight rating (GVWR). This limit is listed on a label on the driver's side doorjamb.

Mistake #4: Not Maintaining Your Transmission Fluid

Vehicle transmission fluid is a specialized fluid used in the transmission system of a vehicle. It serves multiple functions, including lubricating the transmission components, transferring power from the engine to the transmission, and helping to regulate the transmission's temperature.

It is typically made up of a mixture of oils and additives that provide the necessary lubrication and performance properties for the transmission. The exact composition of the fluid can vary depending on the type of transmission and the manufacturer's specifications, so you must use the correct type of transmission fluid for your vehicle’s make and model.

Transmission fluid is essential to the proper functioning of a vehicle's transmission system. It helps to cool and lubricate the transmission components, reducing friction and wear. It also helps keep the transmission in the correct gear and helps prevent slipping.

Not maintaining your transmission fluid can seriously impact the health and longevity of your transmission in several ways, including:

Overheating : Transmission fluid is an essential component that plays a critical role in keeping the transmission system of a vehicle operating smoothly. Its primary functions are to cool the transmission and prevent it from overheating. However, if the fluid level is low or the fluid itself is dirty, it won't be able to perform its job effectively, which can cause overheating and result in significant damage to your transmission’s components. In fact, overheating is the primary cause of transmission failure , and the root cause is often directly linked to the quality and quantity of the transmission fluid.
Increased friction and wear : Transmission fluid lubricates the transmission components, reducing friction and wear. When the fluid level is low or dirty, it can't lubricate the components effectively, causing increased friction and wear on the transmission parts. This can lead to premature failure of the transmission.
Slipping gears : Transmission fluid also helps to maintain the pressure and friction needed to keep the transmission in the correct gear. If the fluid level is low or dirty, the transmission may slip gears, causing reduced performance and potential damage to the transmission components.
Contamination : Dirty or contaminated transmission fluid can cause buildup and debris to accumulate in the transmission, leading to potential damage to the transmission components. Contamination can occur naturally over time and can be accelerated by overheating transmission fluid or not changing the transmission filter regularly.
Expensive repairs : Neglecting transmission fluid maintenance can lead to serious damage to the transmission, resulting in expensive repairs or even replacement of the transmission.

Maintaining proper transmission fluid levels and quality is important for ensuring the smooth operation and longevity of your vehicle's transmission. Here are some tips for protecting the health of your transmission fluid:

Use the correct type of transmission fluid : Different vehicles require different types of transmission fluids, and using the wrong type can damage your transmission. Refer to your owner's manual for the recommended type of transmission fluid.
Change your transmission fluid periodically : Over time, transmission fluid can break down and become contaminated, leading to poor performance and potential damage to your transmission. Most manufacturers recommend changing your transmission fluid every 30,000-60,000 miles but check your owner’s manual for specific recommendations.
Check for leaks : Transmission fluid leaks can cause your transmission to run dry, leading to severe damage from friction and overheating. If you notice any leaks, get them repaired immediately.
Avoid towing heavy loads : As mentioned above, hauling heavy loads can cause your transmission to overheat and the transmission fluid to break down quickly. If you must tow, use the recommended equipment and avoid steep inclines.

By following these tips, you can help ensure that your transmission fluid stays in good condition, allowing your vehicle to run smoothly and reducing the risk of costly transmission repairs.

Mistake #5: Bad Driving

Poor driving behaviors can negatively impact your transmission’s health, causing excessive wear on the transmission's internal parts and potentially leading to early failure. Here are some common examples:

Impatient or sloppy shifting : Shifting gears while the vehicle is still moving can put stress on your transmission, which can cause accelerated wear and potentially lead to costly repairs or replacements. This is because the transmission is designed to engage the gears when the vehicle is stationary, and attempting to shift while the vehicle is moving can cause damage to the gears and other components.
Aggressive Acceleration : When you accelerate aggressively, the engine sends more power to the transmission, which has to work harder to transfer that power to the wheels. This can cause increased friction and heat buildup, leading to premature wear and tear on the gears, clutch, and other transmission components. Aggressive acceleration can also cause the transmission fluid to overheat, which can cause fluid breakdown and reduce its effectiveness in lubricating and cooling the transmission. This can lead to increased wear on the transmission components, reduced performance, and potential damage.
Sudden Braking : When you suddenly slam on the brakes, your vehicle’s momentum transfers to the transmission and other drivetrain parts, causing them to work harder than usual. This sudden shock can cause stress on the gears and other components, leading to damage or failure. Sudden braking can also cause the transmission fluid to overheat, which can cause it to break down and become less effective at lubricating and cooling the transmission. Over time, this can damage the gears and other components, reducing the performance and lifespan of the transmission.

In conclusion, transmission failure is one of the most costly and frustrating issues a vehicle owner can face. However, it is often preventable if drivers take the necessary precautions and avoid the common mistakes that can lead to transmission failure. By driving responsibly, maintaining proper fluid levels and regular maintenance, and being vigilant for signs of trouble, you can help extend the life of your vehicle's transmission. It is also important to avoid exceeding your vehicle's towing capacity to avoid undue stress on your transmission. By following these simple steps, you can help ensure that your vehicle's transmission stays healthy and reliable for years to come.

Help Prevent Transmission Failure with AAMCO

At AAMCO Knoxville , we understand the frustration and expense that comes with transmission failure. That's why we're committed to helping you avoid it in the first place. Our expert technicians can help you maintain your transmission by providing regular maintenance, such as fluid changes and inspections. With our advanced diagnostic tools and extensive experience, we can catch potential issues early and prevent major repairs down the line. Don't let transmission failure catch you off guard. Trust the experts at AAMCO Knoxville to help keep your vehicle running smoothly. Contact us today to schedule your appointment , and let us help you avoid transmission failure!

8 Tips To Improve Your Vehicle’s Fuel Efficiency

Wed, 29 Mar 2023 13:14:11 GMT

As prices for everything from groceries to supplies continue to rise here in Knoxville, TN, and across the country, you may feel pressure to find ways to save money. One way to do that would be by saving money at the pump.

While gas prices are still relatively high—although there seems to be a downward trend—you can save money on gas by increasing your vehicle's fuel efficiency and improving its fuel economy.

Fuel Efficiency Vs. Fuel Economy

What is the difference between fuel efficiency and fuel economy? Fuel efficiency describes how well a vehicle can use fuel, while fuel economy refers to the specific number—the miles per gallon (MPG)—that a vehicle can drive. This number is set for each vehicle during testing in the lab under regulated conditions. That means that when you are driving your automobile, there are certain things you can do to make sure you keep your vehicle performing at top fuel efficiency.

The Main Causes of Bad Gas Mileage

First, let's look at some of the main reasons your fuel efficiency might not be quite where it should be. Little or poor maintenance of these car parts can lead to major fuel consumption:

Bad fuel injectors

Whether dirty, clogged, or damaged, if the fuel injectors are not working correctly, they can significantly decrease your vehicle's fuel economy. Fuel injectors are responsible for spraying fuel into the engine in a precise pattern to mix with air properly and combust in the engine. If this is off, it can lower your engine's efficiency.

Type of motor oil

Often, people stray from the owner's manual and use different types of motor oil in their vehicles, falling for special formulas like "high mileage engine oils." However, these motor oils can reduce fuel efficiency if not mentioned in your automobile's manual.

Bad oxygen sensors or air filters

Faulty oxygen sensors or dirty air filters can make your engine work harder than needed to compensate for the air-to-fuel ratio or clogged air filter debris, respectively.

Spark plug inefficiency

Spark plugs begin the process of combustion in the engine. If they malfunction or misfire, the fuel does not combust, wasting the unburnt fuel and drastically lowering fuel economy for your automobile.

Poor alignment

If your steering wheel is out of alignment, your engine is most likely working harder than it needs to fight the resistance between your steering and your vehicle's wheels. This will cost you pressure fuel and decrease your automobile's fuel economy.

Worn out brakes

Like poor alignment, worn-out or stuck brakes can make it harder for your engine to propel the vehicle forward. The resistance from the sticky brakes creates brake drag, which is when your engine fights against the brakes to move. Brake drag will make your fuel efficiency drop drastically.

8 Tips to Improve Fuel Efficiency and Gas Mileage

There are lots of ways to improve your vehicle's MPG. Follow these eight tips to increase fuel efficiency and save money at the gas pump.

1. Avoid idling

Surprisingly, idling uses more fuel than restarting your automobile. Next time you come to a stop, consider turning off your engine completely and then restarting it. This will help you increase your fuel economy, and, ultimately, the money in your pocket. Of course, Knoxville traffic does not always allow you to stop idling completely, but the more you can avoid the habit, the more efficiently your vehicle will drive.

2. Use cruise control

Most automobiles lose fuel efficiency after reaching 45-50 miles per hour, and the faster you drive, the lower your fuel economy will be. It is best to stay within the speed limit and use cruise control to minimize fast acceleration and hard braking, which will utilize extra fuel.

3. Keep up with regular maintenance

You can avoid all the issues mentioned that are the main culprits for low gas mileage by always bringing your automobile to AAMCO for regular checkups and maintenance. Change your oil and replace your filters regularly to keep your vehicle running efficiently. Knowing warning signs of failure for large and essential components, such as your transmission, will help save time, money, and fuel costs. Additionally, if you see your Check Engine Light flick on, have your vehicle checked as soon as possible.

4. Do not carry unnecessary items

Extra bags, books, shoes, garbage, and other non-essentials can quickly add up and weigh down your vehicle, requiring it to use more fuel to power it forward. You can significantly increase your vehicle's fuel efficiency by removing unnecessary items from your automobile, including wind-resistant items on the outside, like cargo boxes and bike racks.

5. Watch your tires

While flat tires will undoubtedly decrease your fuel economy, even slightly under-inflated tires can reduce your MPG — and wear out your tire tread more quickly. Make you check the PSI in your tires regularly and that it equates to the suggested PSI in the owner's manual.

6. Limit the use of HVAC

The air conditioning system is a heavy user of your vehicle's fuel. If you limit your use of AC, more fuel can be used to power your vehicle efficiently. However, there is a catch-22: rolling windows down can also decrease fuel economy because it creates more resistance at certain speeds. Find a balance that works for you, and do your best to avoid both to increase MPG.

7. Plan your trips ahead of time
Before getting on the road, look up different routes to your destination and choose the most direct way. Also, use real-time traffic monitoring apps or software to avoid traffic jams. The less you have to slow down or stop, the less fuel your engine will need to use, making your vehicle drive much more efficiently.

8. Read the owner's manual
Get to know your vehicle and how to best optimize its fuel consumption by thoroughly reading the owner's manual. Learn about the care it needs and its different driving modes to understand how to make your vehicle fuel efficient.

What About Hybrid Vehicles?

Hybrid vehicles are different and require different tactics to optimize fuel use. Here are a few tips for drivers of hybrid vehicles.

Keep the battery charged
For plug-in hybrids, always charge your battery whenever you can, so you can continue driving on electricity instead of gasoline. This will save you fuel, decreasing the number of times you have to stop for gas and saving you money. Check the owner's manual for the best charging advice for your particular vehicle.

Watch the energy monitor
The energy monitor will show you when you are using fuel, allowing you to make better decisions on when to use electricity or charge your battery. This way, you can optimize fuel consumption and increase fuel economy.

Avoid the "neutral" gear
While neutral gear helps increase MPG for regular gasoline-powered vehicles in start-stop traffic, it is bad for hybrid vehicles. Every time you put your hybrid automobile in neutral, it stops your vehicle from making electricity and discharges the battery.

Visit AAMCO to Equip Your Vehicle for Efficient Driving

If you are looking for ways to save money at the pump, increasing your vehicle's fuel economy can help. At our AAMCO Knoxville, TN Center, we can help you optimize your vehicle for better fuel consumption by checking things like fuel injectors, spark plugs, tire alignment, and any other routine maintenance you may need. Schedule an appointment to save money and increase your vehicle's fuel efficiency today!

Why Is Your Check Engine Light On?

Fri, 27 Jan 2023 20:53:40 GMT

A check engine light (CEL), also known as MIL or malfunction indicator lamp, can be a frustrating, worrisome, and confusing sight on your dashboard, but it's essential to understand what it means and what to do when you see it.

The warning light, which is often shaped like an engine, can indicate a wide range of issues with your vehicle, from something as minor as a loose gas cap to something as significant as an engine problem or failing transmission. In this article, we'll take a quick look at what a check engine light might mean and what steps you should take if you see it illuminated on your dashboard.

Your Check Engine Light & OBD-II System

Your check engine light is connected to your vehicle's on-board diagnostics (OBD) system. The OBD-II system monitors various systems and components of your vehicle, such as the engine, transmission, brakes, safety, and emissions control systems.

The OBD-II system detects problems by using computers, sensors, and other diagnostic tools that are strategically placed throughout the vehicle. These computers (or modules) and sensors collect and analyze data to determine if the data matches a set of standard values. If the data does not match the preset value and a problem is detected, the OBD-II system will store a diagnostic trouble code (DTC) and turn on the check engine light to alert the driver.

The OBD-II system is integral to your vehicle's overall performance and safety because it helps ensure various systems and components function correctly. If you see the check engine light on, a professional must check the vehicle out as soon as possible.

The Difference Between a Solid and Flashing CEL

A solid check engine light may not be an urgent threat, but you still have reason to worry. This light may be on because of an untightened gas cap, or it may indicate a problem with the brake system, ignition and fuel system, or even the transmission. You should have your vehicle inspected to diagnose and fix the issue as soon as possible to avoid larger problems and more expensive repairs.

However, a flashing CEL is much more serious. If you see a flashing CEL while driving, avoid driving the vehicle very far, find a reputable repair center, and get it repaired quickly. This condition can put the engine and the transmission into a failsafe mode that limits how far and fast you can drive, allowing you to “limp” the vehicle to a repair center or home. If it becomes unsafe to drive, find a safe location to stop, turn off your vehicle, and call roadside assistance. Never ignore or put off a flashing check engine light.

Reasons Your Check Engine Light Is On

There are a few reasons why your check engine light might be on. Here are some of the most common ones:

1. Loose or missing gas cap.

Your gas cap does more than just keep your gas from splashing out of your tank. It is also an important part of your emission system and holds in harmful gasoline fume emissions from the atmosphere and keeps your entire fuel system in a self-contained, leak-free enclosure. Your onboard computers will periodically check to see if the fuel system will hold pressure and, if not, will turn on the check engine light and set a diagnostic trouble code.

2. Faulty Oxygen Sensors

An essential component of the emissions system, an oxygen sensor measures the quantity of unburned oxygen in the exhaust system. If the oxygen sensor malfunctions, it will cause your check engine light to be illuminated.

3. Transmission Problems

Several transmission problems are linked to a check engine light turning on, such as a problematic transmission valve body and solenoids, slipping clutches, failing torque converter, or overheating transmission fluid. Your transmission is one of the most complex components in your vehicle. If it is discovered that your transmission is at fault for the CEL coming on, it's highly recommended you go to a shop that specializes in transmission repair.

4. Ignition System Problems

The ignition system is responsible for providing the high-energy spark to ignite the fuel in the engine of your vehicle. If it is not working correctly, strongly enough, or at the correct timing, it will cause your check engine light to come on. This could be due to faulty spark plugs, ignition wires, computer issues, or defective or worn-out ignition coil packs.

5. Faulty Mass Airflow Sensors

The mass airflow sensor, also known as the MAS, is prone to the build-up of oil and debris caused by air filters that are not maintained frequently. The mass airflow sensor measures the amount of air that enters your engine. If the sensor becomes dirty or defective, this will affect the air-fuel ratio to the cylinders, which can lead to performance, emission, and fuel economy problems, and can also cause damage to the engine.

6. Faulty Catalytic Converter

The catalytic converter is responsible for reducing the number of pollutants that your vehicle emits. It converts carbon monoxide into carbon dioxide. Failure of a catalytic converter is often caused by an engine misfire, faulty oxygen sensors, bad spark plugs, or other issues within the engine. It can also be a blown-out head gasket, which may cause burned coolant vapor to be pushed into your vehicle's exhaust system—which is one of the main reasons behind a flashing check engine light.

7. Worn Spark Plugs

The spark plugs are responsible for igniting the air/fuel mixture in your engine. So, a weak or worn ignition system may lead to a misfire in the engine, a damaged catalytic converter, and a rise in hydrocarbon emissions. You will also most likely notice a decrease in the performance of your engine and a change in transmission shift timing.

The Importance of Regular Maintenance

Want to help prevent your CEL from coming on? Regular maintenance is the first and best step towards that goal. Here’s why:

Prevent Major Damage
By routinely inspecting and servicing your vehicle, and not ignoring check engine lights, you can catch minor issues before they become major problems. This can save you time and money down the road.
Keeps You Safe
It is also important for more than just saving money; it protects both you and your vehicle. By performing regular maintenance, you can make sure your vehicle is dependable and running safely and efficiently.
Improves Fuel Efficiency
Regular maintenance has a positive effect on fuel efficiency. Neglecting regular maintenance can decrease fuel efficiency as dirt and other debris build up in the engine. It will eventually reduce the performance of the engine. So, regularly changing the oil, checking the air filter, and replacing the spark plugs can keep your engine running efficiently.
Keeps Your Vehicle in Good Condition
By keeping up with regular maintenance, you can help keep your car in top condition. This can help improve its performance, health, and reliability, saving you time, money, and headaches in the future.

Conclusion

So, it is important to know why your check engine light might be on. And you should take the necessary steps as soon as possible to address the issue. Additionally, if the check engine light is on, it is essential to get it checked by a professional quickly to diagnose any problems and resolve minor issues before they become major headaches.

Check Engine Light On? We Can Help!

AAMCO Knoxville has expert technicians who diagnose and repair your vehicle using the most up-to-date technologies available. With our expertise and knowledge of a wide variety of vehicle makes and models, we can accurately diagnose what is wrong with your vehicle so you can get back on the road safely and without delay. Whether you need a simple tire rotation or transmission repair, AAMCO Knoxville provides impeccable service and repairs backed by a nationwide warranty. Contact us today!

Torque Converter Failure: Main Symptoms and Causes

Fri, 25 Nov 2022 20:45:08 GMT

When you get in your automatic vehicle, start it, and press the gas pedal, it doesn’t occur to you that these simple actions require many complicated processes under the hood. You’re able to get from point A to point B because of your engine and transmission. The one component that brings both these things together is your torque converter, which serves a vital role in the health and performance of your transmission.

When you experience the need for transmission repair , one of the most common reasons is an issue with your torque converter.

What Is A Torque Converter?

The torque converter is a donut-shaped component hydraulically powered by transmission fluid. It performs the same functions in an automatic transmission that a manual clutch performs in a manual transmission : it transfers rotational energy (torque) from the engine to the wheels, it allows the car to move at different speeds by automatically shifting gears, and it enables your vehicle to stop without stalling by disconnecting the engine from the transmission. The parts of a torque converter include the drive hub, impeller (pump), stator, turbine, clutch assembly, bearings, and front cover.

Symptoms of a Failing Torque Converter

A failing torque converter has noticeable warning signs. If you experience any of the issues below, take your vehicle to a Knoxville transmission specialist immediately.

1. Inconsistent Acceleration

If your vehicle isn’t accelerating as it typically does—the engine revs, but your vehicle does not accelerate—or perhaps you feel a tremor as you push the gas pedal, these could be symptoms of trouble. More often than not, a faulty torque converter could be the cause.

2. Decreased Fuel Economy

Although the torque converter does not shift the actual gears, it does use a clutch that engages and locks to increase fuel economy. Therefore, decreased fuel economy could be a symptom of a failing converter when this mechanism is not working correctly.

3. Odd Sounds or Sensations

Your torque converter could be on the fritz if you hear rattling or whirring noises. Sometimes these unexpected noises are accompanied by shaking or rough vibrations, which can indicate a problem with your torque converter. Bring your vehicle to see a transmission expert as soon as possible.

4. Overheating Transmission

Similar to a vehicle’s engine, the transmission features a delicate temperature gauge, alerting you when the transmission overheats. If you ever find the transmission overheating, you should visit a transmission specialist in Knoxville, TN. An overheating transmission can cause severe internal damage quickly that is costly to repair. A trained technician can tell if it is due to the bad torque converter or some other problem within the transmission.

Torque Converter Maintenance

The torque converter in your vehicle doesn’t need specific care or tuning like other components. However, taking your vehicle in for regular maintenance at our AAMCO Knoxville Center and knowing the warning signs of torque converter trouble can help spot issues before they become more extensive. Transmission problems can be costly to fix, so it is best to catch them early and have them dealt with by a trained technician.

Avoid the Guesswork by Contacting Us Today!

If you notice any symptoms of torque converter failure above, have your transmission assessed by one of our transmission experts at our Knoxville AAMCO Center . We will be happy to take a look and quickly diagnose the problem. Transmission and torque converters are complex components that require special knowledge for repair and replacement to avoid further damage. The torque converter replacement is relatively inexpensive compared to the trouble it may cause to the transmission. Contact us today!

Are Transmission Flushes Necessary?

Wed, 12 Oct 2022 20:33:13 GMT

While an engine oil change, radiator flush, and tire rotation are part of routine maintenance for a vehicle, many owners forget about their transmission fluid. Transmission fluid is vital to your transmission, and it deteriorates over time with continuous use, which causes problems with your transmission. This deterioration accelerates if the vehicle often experiences stop-and-go city driving, hilly terrain, and heavy hauling.

Therefore, yes, a transmission flush, sometimes known as a fluid exchange, is necessary. But when and how often? Most automakers suggest changing the transmission fluid every 30,000 to 60,000 miles for a manual or CVT transmission and 60,000 to 100,000 miles for an automatic transmission, depending on how you operate your vehicle. Some transmissions may even last 150,000 miles without a fluid change, but at that mileage you are stretching the fluid's lubrication and cooling qualities and the filter's filtering capacity! For exact intervals, you should always consult your vehicle owner’s manual.

The Importance of Maintaining Transmission Fluid

The transmission fluid’s purpose is to lubricate and cool all moving components of your transmission to keep it running smoothly. For automatic transmissions, it also provides the hydraulic properties necessary to operate correctly. Any metal-to-metal contact between clutches, gears, valves, and bearings produces tremendous heat and metal particles. Transmission fluid offers protection against this friction to keep your transmission operating at an optimum and controlled temperature. Overheated transmission fluid degrades quickly and can destroy your transmission.

What Is a Transmission Flush?

A transmission flush clears almost all the old fluid from the transmission, including sludge and grime, and adds fresh, good-quality fluid to the entire system, including the torque converter.

However, there are two methods of replacing transmission fluid: a transmission fluid flush or fluid exchange, and a transmission fluid change. Which should you do, and what’s the difference between them?

Transmission Flush Vs. Fluid Change: Understanding the Difference

Transmission flush and fluid changes are two very different processes:

Transmission Fluid Change – This service replaces approximately 50% of the fluid in your transmission. The technician will remove the transmission pan, drain the old oil from the pan, replace the transmission filter, or clean the screen (if equipped), and add the new filter (if equipped) and fresh, new fluid. Because no special flushing equipment is used, some old oil and contaminants will remain in the transmission, transmission cooler, and torque converter.
Transmission Flush – The technician will connect a transmission flushing machine to the cooling lines to hydraulically exchange almost 100% of the fluid inside the transmission, including the fluid inside the torque converter and transmission cooler. During the process, the machine removes any sludge and contaminants trapped in the narrow passages inside the valve body and other transmission fluid corridors and automatically replaces the old fluid with new fluid. Also available is a combination method that the technician starts by removing the transmission pan to replace the filter, examine all the wiring, clean the pan and replace the pan gasket if equipped. The technician then uses specialized equipment to remove any remaining old transmission fluid from the transmission and replaces and fills it with new, clean fluid. This method not only replaces virtually all of the fluid but also replaces the filter and pan gasket or seal.

Benefits of a Transmission Flush

A transmission flush brings similar advantages to that of an oil change. The best part about a fluid flush instead of fluid change is thoroughly removing almost all debris and small particles captured by old fluid.

When your technician performs the flush and adds new fluid, you can expect these benefits:

Extended transmission life: Partially blocked passages and hydraulic lines inside the transmission can break down the inner seals and trigger internal leaks. These leaks can cause transmission damage and a possible breakdown. Per your vehicle manufacturer's recommendation, a transmission maintenance service ensures a smooth transmission with no clogging and longer life.
Smooth shifting: The new fluid flows better inside the system for more seamless shifts. Over time, the old fluid loses its lubrication and cooling ability and may accumulate thick, gooey sludge, making gear shifting difficult.
Protection of warranties: The powertrain warranty gives you peace of mind in case your vehicle's engine, transmission, or drivetrain components fail. However, manufacturers mention in the fine print that the warranty will not remain valid if the owner fails to maintain the powertrain. Transmission fluid maintenance at a proper interval will help keep this costly machinery and its warranty protected.
Enhanced fuel economy: Since the powertrain components are interlinked, a healthy system supports them all and improves efficiency. A smooth-shifting transmission enhances the engine's performance and fuel efficiency, unlike a slipping transmission, which may need to shift at an extended higher rpm, causing the engine to burn more fuel.

Transmission Flushes Are Preventative Maintenance

It is wise to follow the automaker’s recommended transmission flush service rather than wait for the transmission to begin failing. A flush on a sick, dying transmission won’t save it. Transmission fluid flushes are part of preventive maintenance, protecting against failures; they are not rescue operations.

If you observe symptoms of transmission failure , such as grinding sounds while driving, changing gears, or you feel a pause in shifting, you should immediately consult an expert local transmission technician in Knoxville, TN. Remember, if you continue driving with a struggling transmission, you could damage it beyond repair.

Why Should You Have a Transmission Expert Conduct a Transmission Flush?

While you may be able to change transmission fluid yourself, we strongly recommend not performing a DIY transmission flush. Why? Here are a few reasons:

Special equipment is needed to perform a complete transmission flush
Two transmission cooler lines go from the transmission or transaxle to the radiator. You must accurately connect the machine hoses with these lines to extract the old fluid and accumulated debris and fill in the fresh fluid.
You will require specialized training and guidance to run the flushing machine safely and properly to avoid damaging the transmission.

In short, leave the flushing job to the experts!

Conclusion

The transmission is a crucial component of your vehicle that requires regular fluid and filter maintenance for optimal performance and longevity. Following the recommended transmission flushing interval of your vehicle’s make and model will enable the machinery to work efficiently, improve fuel economy, and extend the transmission life.

However, performing a flush will not cure a sick transmission. High pressure can cause the debris to stick to areas that can further damage the transmission.

Look only for professional transmission experts in Knoxville, TN , who have the knowledge and expertise in performing transmission diagnosis, maintenance, and repair.

Come to AAMCO Knoxville for All Your Car Care Needs!

You rely on your vehicle to get you where you need to go. You can't afford to have your vehicle break down, especially if it's preventable through the proper maintenance of your transmission fluid. If you are due for a transmission flush or need us to check on anything, from your tires to your transmission, contact your AAMCO Knoxville, TN Center today!

Surprising Ways Your Transmission Is Impacted by Other Vehicle Components

Thu, 01 Sep 2022 20:23:32 GMT

When it comes to a vehicle’s major systems, it’s easy to think of them as entirely independent and not affected by other systems and components. Having worked on many transmissions, engines, and other vehicle maintenance here in Knoxville, TN, we can tell you that this isn’t the case.

If you think you may be having issues with your transmission , it may be because another damaged, worn, or failing component may be negatively impacting it.

Bad or Failing Binding Universal Joints

If you drive an off-road vehicle, SUV, truck, or other 4WD vehicle, your vehicle is equipped with universal joints—also known as u-joints. As part of the driveshaft, their job is to compensate for the difference in height between the rear axle and your vehicle’s transmission. In the worst situations, allowing these joints to become excessively worn can cause severe vibration, worn bushing, seal damage, and—at a minimum—cause your vehicle to leak transmission fluid.

Loss of transmission fluid means less lubricant in your transmission, which increases friction and heat generation, vastly increasing the chances of damage caused by overheating.

Sensors

Your vehicle's mechanical interior contains many sensors to maintain the harmony and balance of your vehicle’s many electrical and mechanical systems. Below are some examples of ones that will directly and negatively affect the transmission if they should become worn or otherwise defective.

Intake Air Temperature Sensor (IAT)

If you notice a considerable drop in acceleration and power levels when driving, as well as an unwelcome “Hello!” from your Check Engine Light, one explanation could be a faulty intake air temperature (IAT) sensor. The IAT measures air temperature coming into your engine so that the correct air/fuel mixture can be calculated. But why does that matter, and what does it have to do with the transmission?

When the engine doesn’t have the right balance of fuel and oxygen, it works harder to try and compensate. Symptoms of this imbalance include rough idling, juddering, and reduced fuel efficiency. Remember, these systems are connected, so a stressed engine passes that stress onto other systems, such as the transmission.

Mass Airflow Sensor (MAF)

Like your IAT, the mass airflow sensor (MAF) measures how much load is put on your engine and transmission by measuring the amount of air/oxygen flowing into your engine.

Without knowing how much oxygen is in the engine, your vehicle’s computer doesn’t know how much fuel is needed to balance the mix, so your vehicle ends up either “too rich” or “too lean”—neither of which benefits the engine. Low oxygen levels and high fuel levels (rich) will start to decrease your gas mileage; high oxygen with low fuel levels (lean) will bring worse results: overheating, engine failure, and more. The amount of air also directly indicates how much throttle opening is happening and how much load is being put on the engine and transmission.

The transmission uses the MAF sensor to know how much pressure is needed to keep the clutches from slipping. A dirty or bad MAF can cause serious damage to your transmission, reduce mileage, cause the engine to run improperly, and likely set off the Check Engine Light. As mentioned above, an engine working under these stressful conditions passes that strain onto the transmission.

Manifold Absolute Pressure Sensor (MAP)

The manifold absolute pressure sensor (MAP) is another key component for managing the air-fuel ratio and calculating engine and transmission load. Most vehicles with fuel-injection systems have a MAF or MAP sensor, and some have both. This sensor communicates with the vehicle’s central computer, transmission control module, and fuel management system.

If your MAP sensor is faulty, symptoms include lack of power, rough idling, hard starts, declining fuel economy, increased stalling, transmission performance problems, and the Check Engine Light (CEL) turning on. Replacing this sensor can be costly, but the cost is nothing compared to what it would cost to replace the surrounding affected systems if you leave it defective.

Bad Wheel Bearings

Your wheel bearings are a set of steel balls held together in a toughened metal ring. The bearings fit snugly inside your wheel’s hub (the hollow metal piece in the center), riding on the metal axle shaft. Their job is to reduce the friction that occurs when the wheels spin.

A typical set of wheel bearings are made for durability and will last anywhere from 80,000 to 100,000 miles. Even so, knowing the warning signs of bad bearings is critical since they can negatively affect your transmission, especially if your wheel bearing and hubs are equipped with wheel speed sensors. Worn wheel bearings can upset the delicate measurement of wheel speed and cause your transmission to misbehave. A frozen or severely damaged wheel bearing can cause severe damage and significant safety concerns. The most common symptoms include noises coming from the wheels, grinding or grating noises, or possibly a squealing noise. If you notice that these sounds change as you speed up or slow down, there’s a good chance that the bearing is causing the strange noise.

Don’t take every noise you hear from your wheels as a sign of bearing problems, however. For example, humming noises from the wheels are often connected with tires or the CV joint, not your wheel bearings.

Remember that the torque that turns those wheels comes directly from the transmission. When a bad bearing causes wheels to increase their resistance or even stop spinning while you’re on the road, it’s dangerous for you as a driver and can send damaging shockwaves back up to the transmission, causing serious damage.

Spark Plugs and Engine Misfires

Engine misfires and faulty spark plugs can also cause issues with your transmission. A misfire, bad spark plugs, or poorly performing engine parts contribute to a reduced overall performance level, which is bad news for your transmission, engine, and other components.

More precisely, if you have bad spark plugs causing engine misfires, this can cause shock in the transmission that will wear the clutch when the friction disc engages with the drums and other parts. When engines and transmissions do not work correctly, they struggle to perform, which increases wear, elevating the possibility of internal failure.

Get Your Vehicle Checked Out in Knoxville, TN

Many other things can affect the transmission performance, including the alternator, battery, coolant levels, and mounts. There’s almost no scenario in which damage to one part doesn’t affect the rest of your vehicle. In short, damage ensues when one part doesn’t perform in sync with the others. Our precise diagnostic testing can pinpoint the problem affecting your transmission.

If you’re worried about strange noises, excess heat, odd smells, leaking fluids, or if it has just been a long time since your vehicle was last serviced, schedule an appointment at our AAMCO Knoxville Center today!

Automatic Transmission Coolers: Are They Worth It?

Wed, 27 Jul 2022 19:54:58 GMT

Engines aren’t the only thing that can overheat in your vehicle; your transmission can also overheat, leading to problems and expensive repairs. You could opt for an automatic transmission cooler to help prevent the possibility of your transmission overheating. But are they worth it?

That depends on a few factors. If you live in a warmer climate, your lifestyle or job requires you to tow heavy loads, or you are consistently in stop-and-go traffic, a transmission cooler may be an excellent addition to your vehicle. It can give better, more consistent vehicle performance and extend your transmission's life and health.

In this article, we will break down everything you need to know about automatic transmission coolers.

How they work
Types of transmission coolers
Benefits they offer
Installation

How Do Automatic Transmission Coolers Work?

In general, automatic transmission coolers create additional surface area to cool transmission fluid as it moves from the transmission to the radiator and back to the transmission.

Fluid heated by the transmission flows to the transmission cooler, which then goes through a series of fins or plates. Air flowing over the transmission cooler fins dissipates the heat and further cools the transmission fluid moving through the fins. The cooled fluid is then routed back through the transmission via the return line, maintaining a lower temperature.

Types of Automatic Transmission Coolers

Though the basic principles remain the same, different types of coolers employ various methods to get the job done.

Tube And Fin Transmisison Cooler

This is one of the basic transmission coolers on the market. As the name suggests, two main components are present in the tube and fin coolers. The tube allows the fluid to spread and flow through thin metal fins. Then the heat present in the fluid is absorbed by the air flowing around the fins.

Other than the two main components, there is another instrument called the Turbulator. The Turbulator agitates the fluid when it flows through the tube, and the agitation helps increase the heat dispersion through the fins, thus increasing the efficiency. You should mount the cooler between the grille and the A/C condenser for maximum efficiency.

This unit is one of the most cost-effective coolers on the market and the easiest to install.

Plate And Fin Transmision Cooler

This is somewhat similar to the tube and fin cooler. Instead of tubes, you have an aluminum plate, and the fluid flows spread throughout the plate. Compared to a tube, the increased surface area provides greater cooling, and the fluid can circulate at a higher rate. This contributes to reducing the temperature of the transmission fluid. The cooler works best when installed between the radiator and the condenser. Though this is slightly more expensive than the tube-fin cooler, it is still an affordable choice. It is available in different sizes, and the effectiveness varies with the size. One of the problems with this cooler is that it is hard to install.

Stacked Plate Transmission Cooler

The technology used in the stacked plate cooler is similar to that used in the plate and fin cooler. The primary difference between the two coolers is the airflow and surface area the liquid gets.

Due to the capabilities of this specific cooler, this is a sought-after unit for racing, off-roading, and towing vehicles. To increase its efficiency, some units have integrated fans to increase airflow.

This cooler is exceptionally efficient, offers greater airflow, and is durable. However, it is also costly, and its sheer size poses installation challenges. To put this unit's efficiency in perspective, the stacked plate automatic transmission cooler is three times more efficient than the tube fin cooler.

Heat Sink Transmission Cooler

This type of transmission cooler is used most in everyday vehicles. Unlike other transmission coolers, this unit doesn’t rely on external airflow and uses a unique finned aluminum design to disperse the heat through the cooler's body.

It uses either single or dual fluid passages inside the cooler. The fluid's path is much longer, thus allowing the fluid to stay inside the cooler for an extended time. The increased time provides room for the liquid to cool down.

Since the cooler doesn’t rely on external sources to assist in cooling, it can be mounted just about anywhere. It is often installed in the frame rail close to the transmission to make the installation process convenient.

This unit is easy to install, affordable, and durable.

Benefits of an Automatic Transmission Cooler

Like the engine's optimal temperature range, the transmission has its optimum temperature. Ideally, your transmission temperature should be between 170F and 225F. An automatic transmission cooler helps you maintain this temperature, which has several benefits.

Increases Transmission Life Span

If you live in a warm climate, regularly drive through traffic, or haul heavy cargo, your transmission will surely spike over 200F. In such situations, adding a cooler will drop the temperature by 20 to 25 degrees, maintaining your transmission temperature in the 170F range. At this temperature, your transmission could last upwards of 100,000 miles.

Transmission Fluid Lasts Longer

Heat plays a prominent role in the state of the transmission fluid. When the fluid overheats, it starts to break down. This significantly reduces the fluid's ability to lubricate the transmission, which will further contribute to the deterioration of the transmission.

In severe cases, you could end up with burnt transmission fluid. The fluid condition reflects the performance and reliability of the transmission.

Installing an Automatic Transmission Cooler

Before installing a transmission, you need to figure out which transmission cooler best fits your needs. Once you find the ideal cooler, you can move toward the installation.

Different coolers are mounted in different regions of the car. We have already discussed the location in which each cooler is mounted. The orientation of the cooler does not matter, and it should not create any problems if it is in the correct position.

When mounting the cooler, the best way to do this is via a mounting kit. The kit comes with heavy-duty zip ties and spacers to prevent the cooler from coming into contact with the condenser.

Running the lines properly can be tricky. As it sits, the transmission fluid leaves the transmission, flows through the radiator, and re-enters the transmission. After you add the cooler, the fluid should leave the transmission, go through the radiator, and then go through the cooler before returning to the transmission.

After setting up the lines, ensure they are correctly fastened so there are no leaks. Finally, top up the transmission fluid to compensate for the void created by the cooler and hoses.

If this seems a bit confusing, you could always visit us at AAMCO Knoxville to get your automatic transmission cooler mounted.

Do You Need an Automatic Transmission Cooler?

As mentioned, it mainly depends on your driving habits and the climate where you live. You probably won’t need a transmission cooler if you live in Minnesota or Vermont. On the other hand, if you live in the southwest, a cooler would be a welcome—perhaps even required—addition to your ride.

But what if you were living in someplace like Knoxville, Tennessee? Knoxville summers can get hot, and stop-and-go traffic can be a risk factor for transmission overheating. Most importantly, you should consider getting a transmission cooler if you use your vehicle to tow boats, trailers, or other heavy loads for work or leisure.

Coolers Don’t Solve Existing Transmission Problems

Transmission coolers are used to prevent problems, not solve them. Take your vehicle to a transmission specialist immediately if you notice transmission problems , such as slipping, overheating, or other issues. Additionally, transmission coolers don’t allow you to skirt weight limits for towing. Overloading your vehicle can ruin your transmission or engine, and no amount of cooling can prevent that.

Conclusion

Keeping your transmission fluid at an optimum temperature, especially if you’re doing activities that involve towing heavy loads synch as boats or trailers, will extend the life of your transmission and help keep the need for repairs away.

Think a Transmission Cooler Is Right for You? We Can Help!

Have questions? AAMCO Knoxville sells, installs, and repairs automatic transmission coolers. If you’re having overheating issues or want to learn more about the automatic transmission coolers, schedule an appointment at our AAMCO Knoxville Center today!

A Quick Guide to A/C Maintenance and Repair

Tue, 28 Jun 2022 19:41:32 GMT

Why A/C Maintenance and Repair Is Important

Like any vehicle component, your A/C should be properly maintained throughout the year. Where a few reasons (and bonuses!) why A/C maintenance and repair are essential:

1. Avoid costly repairs - Some air conditioner components, such as the compressor, can be expensive to fix. You can save yourself from more serious repairs by keeping up with routine maintenance and knowing the warning signs of a failing A/C unit.

2. Keep your mind on the road - Knoxville summers can be wretchedly hot and humid, causing discomfort and irritation. A properly functioning air conditioner can solve both problems, creating a better mood and focus on the road.

3. Safety - Summer storms and sudden temperature drops can cause your windows to fog while driving. Your A/C removes humidity in the cabin and clears up fogged windows fast, increasing your visibility and safety.

4. Fuel economy boost - Maintaining your A/C can improve your vehicle’s fuel economy. When your A/C system is properly charged, and the compressor is working correctly, your engine has less strain, which helps save on fuel. With today’s gas prices, every little bit helps!

6 Symptoms of a Failing A/C

Here are some signs that your A/C may need to be serviced by a trained and certified technician.

1. Warm or hot air

The most common reason for warm air is low refrigerant caused by a refrigerant leak from a compromised hose or sealing ring. The other usual suspects are a damaged condenser, a faulty compressor, or electrical issues.

2. Reduced cooling

The condenser may be a component to blame if you are not getting cold air through your A/C. A damaged condenser, or one severely clogged with debris, will affect how the refrigerant flows and cools. Similarly, parts such as orifice tubes and expansion valves experiencing a blockage or leaking hoses could also have the same effect.

3. No air

There can be a variety of different reasons why you are not getting air through your vents. A worn-out blower motor, blower resistor, or an electrical issue can all be reasons; or it could be the ductwork isn’t opening correctly and obstructs the flow of air or the power to the blower motor.

4. Unpleasant smells

Getting a whiff of musty, sweet, or earthy odors can indicate a blockage in the air intake vent and the cabin air filter by dirt and debris, allowing all sorts of nasty things to grow. Other reasons could be that the A/C evaporator is leaking refrigerant, or engine coolant may be seeping into the A/C ducts from a leaking heater core. If you haven’t had your cabin filter changed in a while, now is an excellent time to freshen the air.

5. Unusual noises

Typically, when you hear unusual or loud noises from your vehicle’s A/C, it is caused by a bad compressor or compressor clutch. If you hear a rattling noise, the compressor’s clutch, mount, or another hardware component may be to blame. If bearings are worn out, a squealing noise may result.

6. Wet vehicle floor

Noticing water on your vehicle’s floor mat can mean debris is blocking your A/C’s condensate drain line. It could also mean that your condensate drain may not be adequately attached to the ventilation system. Additionally, low refrigerant due to a leak could cause lower pressure on your A/C system. A Low refrigerant charge and pressure can cause your evaporator coils to freeze, causing the condensate drain pan to overflow and leak water when it thaws.

Why You Should Always Get Your A/C Repairs Done by an Expert

Even if you are handy with most repairs associated with your vehicle, A/C issues should be left to an experienced technician certified and trained to do this type of work. Usually, when there is an issue with the A/C, most repairs require special equipment for testing, diagnosis, and recharging the system. Leaks can be difficult to spot because they are colorless and odorless; an A/C check involves using specialized equipment, including a dye and a UV light to detect refrigerant leaks.

There are laws in the U.S. that must be followed when servicing air conditioning systems and reclaiming and recycling materials associated with the A/C. For example, it is illegal to let refrigerant vent from the vehicle’s AC system and escape into the atmosphere. It must be serviced properly using the proper approved equipment, and only by technicians HVAC tested and certified by the EPA.

Tips for Optimizing Your A/C

Be kind to your vehicle’s A/C system to ensure it’s in peak performance, especially during the hottest season of the year. Here are some tips to get the most out of your A/C this summer.

Regular maintenance

Maintaining your vehicle's A/C unit will significantly reduce the chances of running into major A/C-related problems. Take the time to bring your vehicle to a technician for regular tune-ups, which include an A/C check.

Moisture encourages the growth of bacteria and mold in your A/C. In the defrost setting, you can remove the moisture in the evaporator core by running the A/C occasionally while driving.

Smart cooling

You can give your air conditioner a break by not turning it on the second you start your vehicle. Rolling down all the windows and driving for a few minutes to let the hot air escape can save your air conditioner from cooling down superheated air. Parking out of direct sun will make the cooling process easier. If it is sweltering outside, running the system in recirculation mode re-cools the air already in the cabin and prevents hot outside air from coming into the vehicle.

We’re Here to Help You Chill Out This Summer!

At AAMCO Knoxville, we can help with any A/C issues or concerns you may have. Make an appointment to have one of our expert technicians conduct an Air Conditioning Service Check to ensure proper operation of your A/C’s compressor, evaporator, condenser, and electrical controls. Visit your local AAMCO Knoxville Center or schedule an appointment today !

Understanding CVT Transmissions

Wed, 04 May 2022 19:31:03 GMT

CVT transmissions have become extremely popular in recent years for many manufacturers because of their efficiency, light-weight, and quiet operation. Many drivers don’t even know they have a CVT automatic transmission but may notice the transmission does not feel like it is shifting. For that reason, and because they require specialized maintenance, CVT transmissions aren't for everyone, so it is essential to understand how they work and learn about their benefits and disadvantages.

In this article, we will discuss four primary aspects of CVT transmissions:

How they work
Pros and cons
Symptoms of failure
Maintenance tips

How Does a CVT Transmission Work?

A few years ago, there were two main types of transmissions: automatic and manual. In a manual transmission, the driver presses the clutch and physically changes the gears when needed. In an automatic transmission, this process doesn’t require the driver's input once the vehicle is in motion; it happens via onboard computers. Both these transmissions have gears, bearings, and friction material.

A CVT transmission, also known as a continuously variable transmission, depends on a metal pulley and push belt system. These metal pulleys adjust to continuously variable ratios compared to fixed gear ratios. This type of transmission has become more prevalent in recent years.

A CVT transmission pulley will change its ratios for the different speeds and loads you require of the car. You may notice the RPMs increasing, but the RPMs will remain relatively stable once you get going. You will never feel gears shifting like you do in a conventional transmission.

Mechanics Behind the Pulley System

There are two pulleys in a CVT transmission: the driving pulley and the driven pulley. The driving pulley receives input from the engine crankshaft. The driven pulley sends the output to the driveshaft. These pulleys are connected using a metal chain or push belt. The pulleys move based on computer demand and vehicle needs. The belt moves up and down the pulleys to change the ratio, similar to shifting gears in any gear transmission.

Pros And Cons of CVT Transmissions

With the popularity of CVT transmissions booming throughout the last few years, it begs the question: Is it a better option? The answer is not so simple. CVT transmissions have their pros and cons.

Pros

Increased fuel efficiency

The most significant advantage of a CVT transmission is the increased fuel efficiency. Vehicles with a CVT transmission may get up to 40 mpg, and hybrids could reach over 50 mpg.

Smoother ride

A CVT transmission makes the entire power curve from the engine to the wheels smoother than in a traditional transmission. The transmission doesn’t need to lock onto gear every time it shifts. A CVT transmission constantly makes small adjustments that a driver cannot notice, resulting in a smoother ride. This same feature also makes driving over inclines easier and more seamless.

Lightweight compared to gear transmissions

Unlike a traditional transmission, a CVT transmission doesn’t contain multiple gears. This reduces the overall weight of the transmission, which reduces the pressure on the drivetrain.

Cons

More expensive to buy and maintain

Owning a CVT transmission can be costly. When the transmission fails, it could cost anywhere between $3000 to upwards of $5000 to replace. Even though a CVT transmission consists of fewer components, it tends to be more sensitive to proper maintenance and driving habits. Proper maintenance is key to extending the life of any transmission but even more so for a CVT. With sensitive metal pulleys, metal belts, and chain drives, dirty fluids and filters can cause significant damage. The price factor comes to play during maintenance, as well. They cost almost twice as much to maintain compared to traditional transmissions.

Low weight towing only

You get a significantly lower towing capacity with a CVT transmission. Usually, they are only capable of towing loads less than 1000 pounds. This is why you only see CVT transmission on smaller vehicles.

Signs That Your CVT Is About to Fail

If you own a car with a CVT transmission, you need to be aware of the signs of failure. Like any other major component in your vehicle, an early diagnosis will reduce the damage. Here are the signs you need to keep an eye out for:

Overheating

Transmission overheating will be the death of any transmission. Overheating is typically due to a lack of fluid (leaks) or maintenance (dirty fluid). Either way, it is a significant issue that requires immediate attention.

Fluid leaks

CVT transmission can leak from many locations. While some are easy to address, some might require more work. A fluid leak that’s not corrected can cause irreparable damage to your transmission. Dirty transmission fluid will also result in similar damage as a leak. With time, your transmission fluid will get contaminated with dirt and debris, which decreases its ability to keep everything lubricated and working correctly.

Vibrations

One advantage of a CVT transmission is the smooth ride. If you notice irregular vibrations or experience excessive vibrations at high speeds, get your vehicle examined and diagnosed by a professional.

Sudden loss of acceleration

CVT transmissions have a reputation for their acceleration. A failing CVT transmission will show weakness in this area. You will notice that your transmission hesitates to accelerate. There may be two reasons for this: overheating and slipping. As the transmission overheats, the acceleration response is delayed. Another possible reason is transmission slippage. When this happens, the engine might rev, but power won’t be transferred to the wheels. In either case, it creates an unpredictable response that could create a dangerous situation while driving.

CVT Transmission Maintenance Tips

On average, a CVT transmission will last between 60,000 miles to 100,000 miles. You could reach the higher end of this spectrum with proper and routine maintenance.

Regular fluid changes

The first and most important aspect of maintenance comes in the form of routine fluid changes. Transmission fluid acts as a lubricant as well as a coolant. Your transmission cannot function without transmission fluid. With time, your transmission fluid will accumulate dirt and debris. Eventually, it will lose its lubricating properties, nor will it flow properly. Most of the symptoms mentioned above can be avoided by regularly changing the transmission fluid. So, how often do you need to replace transmission fluid? Check your vehicle’s owner manual for the most accurate recommendations.

Taking it easy

CVT transmissions aren’t designed to handle a lot of stress. They are smaller than regular transmissions and are primarily present in smaller vehicles. Since CVTs don’t handle excess torque well, overloading, off-roading, or towing heavy loads will significantly reduce its life span.

Finding the right technician

Finally, if you are getting any work done on your transmission, take your car to a certified, professional technician. CVT transmissions have only gained popularity in the past few years. Few technicians have the tools, knowledge, or experience to work on them. Poor servicing or mishaps during repairs will cause further damage to your transmission.

Conclusion

CVT transmissions work in a completely different manner compared to traditional transmissions. Are CVT transmissions the best choice? They have their pros and cons. Depending on your requirements, you should decide whether it suits you. CVT transmissions are constantly evolving in performance, efficiency, and reliability. Before purchasing a vehicle with this type of transmission, do your research. Not all manufacturers offer CVT transmissions, nor do they share the same standards for CVT transmissions.

We’re Here to Keep Your Transmission in Top Shape

AAMCO is the best option for fixing your vehicle's transmission, whether it’s an automatic, manual, or CVT. Our technicians have the experience and knowledge to get the job done right the first time at an affordable price. Schedule an appointment at our AAMCO Knoxville Center today!

Introduction to Manual Transmissions

Thu, 28 Apr 2022 19:18:19 GMT

What Is a Transmission?

A car transmission works by allowing the transfer of power from the engine to the vehicle’s wheels. It does this by harnessing the engine's torque and managing its speed when driving. Transmissions contain fluid to allow free movement of its gears within the transmission housing.

Transmissions can either be manual or automatic , which refers to the type of user input (human or machine) in changing the gears once the vehicle is moving.

Manual: Dependent on the driver to switch gears by manually controlling a hand-operated gear lever and a clutch-operated foot pedal.

Automatic: Uses a computer and a series of planetary gears, clutches, and actuators to automatically shift gears with no driver input.

Semi-Automatic: Driver input is needed to shift gears but works like an automatic with no clutch pedal. Instead, a driver can shift using paddles behind the steering wheel.

CVT (Constantly Variable Transmission): is a cone-shaped setup using pulleys and a push belt instead of a fixed gear system.

How Manual Transmissions Work

With a manual transmission, the driver controls gear selections, clutch engagement and release, and shifting. A transmission has a number of gears at different gear ratios to balance the power from an engine. Lower ratios mean higher torque with lower speeds. Higher ratios offer lower torque but allow a higher vehicle speed. Usually, manual transmission-equipped vehicles have a 4 to 6-speed setup and one reverse gear.

Typically a manual transmission consists of three shafts and different-sized gears that are interconnected. The input shaft is linked to the engine using a clutch disc , pressure plate , and flywheel . Its countershaft has meshed gears connected to the input shaft and output shaft where the gears are located. Finally, the output shaft connects the driveshaft to the countershaft and is used to drive the wheels.

Locking collars are used to slide along a set of gears and lock them into place. Neutral means no gear is selected. The output shaft does not move because no gears are locked into place with locking collars.

How to Operate a Manual

First, the clutch pedal must be pressed, separating the flywheel from the clutch disc that is engaged to the input shaft. The driver needs to place the gear lever into first gear. The linkage from the shifter engages first gear using the locking collar, locking the output shaft. Upon lifting the clutch pedal, the clutch disc engages with the flywheel and the transmission input shaft is geared to the output shaft, which begins to rotate at engine speed and the vehicle will begin moving forward.

Advantages

Drivers have complete control of shifting, offering a fun driving experience.
Decreased purchase and repair costs due to less complexity of the system
Last longer and typically requires fewer repairs throughout its life

Disadvantages

Parts may be harder to come by since this type of transmission is becoming less common
The clutch will need periodic replacement which can be costly
Harder to use and learn to drive than automatic or semi-automatic transmissions

Warning Signs to Check Your Manual Transmission

Unresponsive

If your car becomes more difficult to move from a standstill, the clutch may have failed. The clutch has a friction lining that engages the transmission to the engine when in gear. This surface-to-surface slipping contact over time means this material can wear away.

Rough or Delayed Shifting

If shifting becomes hard to do or slips and engages a second or two later than expected, your transmission or clutch may no longer be able to engage and shift smoothly, indicating trouble ahead.

Slipping Clutch

Any chattering, a burning smell, or a high revving engine when you release the clutch pedal are signs of a slipping clutch.

Clutch Pedal Feels “Weird”

Weird is not always wonderful, especially in the case of how a clutch pedal feels. Transmission issues can cause the clutch to feel different than usual: sticky, mushy, stiff, loose, lower or higher, the list goes on. If your clutch is not behaving normally or the pedal just doesn’t feel “right,” have it looked at immediately.

Odd Sounds

Listen for any odd sounds. Your transmission should be quiet or sound smooth. If there is an uncommon loud crunching or whining sound, then bearings or gearing may be at fault. It is important to take it to a repair specialist as soon as possible.

Fluid Leakage

If dark wet patches are present on the ground or if you can see dripping, you may have a transmission fluid leak. This is caused by worn seals or a loose component. Low transmission fluid creates an increased risk of overheating, accelerating wear and damage to the system.

How to Take Care of a Manual Transmission

Manual transmissions are prone to wear and need regular maintenance to keep them running smoothly. Here are three tips for taking care of your manual transmission:

Replace Fluid

The meshed gears in a manual transmission are bathed in transmission fluid. It is essential to regularly maintain your transmission fluid and replace it according to manufacturer guidelines, typically 30,000 - 60,000 miles. Be careful in hot weather. Knoxville summers can cause transmission fluid to heat up, especially in traffic.

Overheating transmission fluid can cause damage to the transmission quickly. Be proactive by checking your transmission fluid more often to ensure a well-functioning transmission.

Maintain Clutch Assembly

A clutch typically needs replacing around 60,000 miles, depending on the vehicle. The clutch assembly has six main elements: the release bearing, pressure plate, friction plate, and a clutch fork, along with a hydraulic master cylinder and slave cylinder to engage and disengage the clutch when pressing on the clutch pedal. All or some of these elements may require replacement when servicing a clutch system.

Avoid Flooded Areas

Knoxville is an area prone to flooding. Driving your low-slung sedan through a flood can cause catastrophic damage to the engine and transmission if water gets into the vents and open areas. Water does not mix well with the oil needed to lubricate your transmission’s components. Water inside the transmission can result

in a high repair bill, or even the need to replace the transmission entirely. If you do get caught in higher-than-normal water, have the fluid changed immediately. You may be able to save money and headaches.

Manual Transmission Trouble?

Transmissions are the go-between from the engine to the wheels and are a complicated but important part of your vehicle’s drivetrain. It is essential to maintain and repair any issues with your transmission. Visit your local AAMCO Knoxville Center or schedule an appointment today!

Understanding Your Automatic Transmission

Tue, 05 Apr 2022 19:08:06 GMT

There is a good chance that your vehicle is equipped with an automatic transmission. Therefore, it is good to clearly understand how this vital system works.

What Is an Automatic Transmission?

An automatic transmission helps regulate how fast your engine rotates and maximizes power without having to provide direct input from the driver to switch forward gears. A vehicle’s engine needs to rotate at the optimal rate to properly maintain the powertrain's power, economy, and longevity. If the rotation rate is too slow, then the vehicle will lack power and not be able to accelerate properly from a standstill. If the rotation rate is too fast, engine parts can wear aggressively and become damaged.

Automatic transmissions are overwhelmingly popular. Today, 96% of Americans operate vehicles with an automatic transmission.

Types of Transmissions

There are several different types of transmission. Here’s a quick overview of these transmissions and how they operate.

Automatic - Automatically changes the forward gears without direct driver input.

Manual - Uses driver input to select all gears and change the forward gears.

CVT - Also known as a Continuous Variable Transmission. This system is a type of automatic transmission that seamlessly changes through a continuous range of gear ratios using tapered pullies and a push belt.

Dual Clutch Transmission is a multi-speed automatic manual transmission that uses two separate automated clutches and computer control for shifting between gears.

Mechanics of an Automatic Transmission

An automatic transmission is made up of many different parts and systems. Here’s a look at the components found in a standard automatic transmission:

Transmission case - As the name implies, this is the main casing that holds and surrounds the components of the automatic transmission.

Torque converter - This component is located between and connects the engine to the transmission. The primary function of the torque converter is to hydraulically transfer power from the engine to the transmission and multiply the engine’s torque output. Modern torque converters also mechanically couple the engine to the transmission during overdrive. The parts of a torque converter include the drive hub, impeller, stator, turbine, clutch assembly, bearings, and front cover.

Oil pump - Circulates and provides transmission oil (fluid) under pressure to the rotating bearings, clutches, planetary assemblies, torque converter, and other parts such as the bands, valve body parts, and servos.

Bands brake - Holds internal drums and planetary gear components in place to provide different gear ratios.

Transmission oil (fluid) pan – holds the proper amount of automatic transmission fluid in the transmission operation without fluid starvation.

Planetary gear set - Produces the gear ratios and reverse for your transmission.

Clutch packs - Holds friction plates and related components in place to facilitate gear shifts.

Valve body - A transmission valve body is a complex maze of machined pathways and ports using electronic computer-controlled solenoids and valves that routes transmission fluid through the transmission. The transmission control module (TCM) is the transmission’s brain that controls the valve body.
If something were to go wrong with the transmission valve body or severe wear occurs with the valves and bores, the transmission may cease to function correctly and, in some cases, may not function at all.

Output shaft – Connects the driveshaft to the automatic transmission in a rear-drive transmission.

How It Works

Automatic transmissions use hydraulic power, friction plates, and planetary gears to shift gears. First, the torque converter acts as a fluid coupler. The torque converter allows an idling engine to rotate without engaging the transmission. It also transfers power from the engine to the transmission as the RPMs increase.

Here is how the process works from start to finish:

The engine uses the torque converter to transfer its power. There are two halves of the torque converter. One half is connected to the engine and the other is connected to the transmission. Imagine two fans placed in front of each other; one is plugged in, and the other is not. The one that is plugged in is the half that is connected to and turned by the engine; the other is the half that is connected to the transmission. The air from the spinning fan blowing into the blades of the other fan causes the other fan to spin while also allowing it to stop spinning if you were to hold the fan stationary on the transmission side. This is how a torque converter works. The power from the engine is transferred to the engine using transmission fluid to drive the internal clutches and planetary gears. The torque converter is also connected to the hydraulic pump inside the transmission. It provides power to drive the pump to provide the hydraulic pressure needed to engage clutches and shift gears.

The pump also provides fluid to the bearings and other components for cooling and lubricating. The pump is the heart of the transmission.

Next is the valve body. In all modern automatic transmissions, the valve body is controlled by a computer. The valve body directs the pressurized transmission fluid using computer-controlled solenoids to the different clutches, pistons, and servos to select the gears. The computer receives inputs from many places on the vehicle, including the engine (input), wheel speed, transmission output speeds, temperatures, and engine load information. It uses this information to signal the electric solenoids to select when to shift to the proper gear ratio. The electric solenoids act as gates or shutters, opening and closing valves in the valve body to direct the hydraulic fluid where it needs to go. Accumulators and damper springs inside the transmission smooth and dampen the pressure for more comfortable and smoother shifts..

Why Automatic Transmissions Are Popular

As stated before, the vast majority of drivers use an automatic transmission. There are several reasons why automatic transmissions are so popular:

1) Easier to Use with Smoother Performance

An automatic transmission is easier for drivers to use on a day-to-day basis. This is especially true when driving in stop-and-go traffic or on hilly terrains. An automatic transmission handles the automatic shifting of gears without any direction from the driver. Additionally, a manual transmission requires constant upshifting and downshifting along with working a clutch pedal with your left foot. They also tend to be less smooth with a noticeable “jump” when shifted from gear to gear. With an automatic transmission, you get smoother shifts and an easier drive.

2) Smoother & More Consistent Acceleration

Automatics typically shift faster and more accurately than manual transmissions. Shifting a manual transmission involves driver skill and involvement, which opens the possibility of mistakes in operation and timing.

3) Higher Resale Value

Finally, vehicles with automatic transmission are more desirable to consumers. Therefore, they typically have a higher resale value than a vehicle with a manual transmission.

4) More Fuel Efficient

While the myth that manual transmission vehicles are more fuel-efficient than their automatic counterparts persists, this is no longer true. Automatic transmissions are now more fuel-efficient because of added gears and a clutch inside the torque converter that mechanically locks the two halves together at cruising speeds, eliminating slip and any power loss from the torque converter.

Are There Any Disadvantages to Automatic Transmissions?

While automatic transmissions are popular, there are some disadvantages:

1) Less Engaged Driving Experience

Some people still drive a manual transmission because it gives you more control and a more engaging driving experience.

2) More Expensive to Buy

New and second-hand vehicles equipped with automatic transmissions are more expensive, so they are not always an ideal choice when you’re on a tight budget.

3) Higher Maintenance Cost

Automatic transmissions will have higher maintenance costs. This is because automatic transmissions require more frequent servicing, and the higher complexity with many more parts means they can break down more frequently than their manual counterparts.

Warning Signs of Automatic Transmission Failure

Knowing the warning signs of potential automatic transmission issues is helpful. The sooner you bring your automatic transmission in for repair, the better. The longer you drive a transmission with performance issues, the more damage that will occur. This can dramatically increase repair costs. Here’s a look at the significant warning signs of possible automatic transmission failure:

Refusal to change gears - If your transmission is not shifting gears properly or delaying when you put it into drive or reverse, there is likely an issue with the automatic transmission.
Burning smell - Look out for any burning smells coming from the vehicle, which can signal transmission issues.
Slipping gears – Slipping when shifting gears is another common issue with failing automatic transmission.
Leaking transmission fluid - If you notice a reddish-brown puddle under your vehicle, you are likely leaking transmission fluid. Leaking transmission fluid is a common cause of transmission damage.
Check Engine Light (CEL) - A check engine light may turn on due to several vehicle issues, including automatic transmission failure.

Knowing the signs of transmission failure and understanding the repair process can save you time and money, so don’t delay. Bring your vehicle in to a transmission specialist as soon as possible.

How to Better Care for Your Automatic Transmission

For professional maintenance and repair for your automatic transmission, visit our AAMCO Knoxville Center. We’ll make sure your transmission is repaired right the first time for safe and reliable driving.

Transmission Repair 101

Wed, 02 Mar 2022 18:49:00 GMT

Transmission repairs are among the most daunting costs that you can incur over the life of your vehicle, so learning how to maintain your vehicle’s transmission is critical. Let’s take a look at what you need to know about your vehicle’s transmission, how to spot trouble, and a quick walkthrough of the transmission repair process.

What is a Vehicle Transmission and Why Is It Important?

A transmission is a system of mechanical, electrical, and hydraulic components that connects and transmits the power from your car’s engine to the wheels. It does this by distributing the engine's power to the wheels and automatically changing the gear ratios to optimize the engine power, efficiency, and reliability. The gear ratios help the engine stay in the proper power band to push your car faster or help slow it down when deaccelerating. Without a properly working transmission, your vehicle will have unpredictable power regulation and performance response, which can be a safety hazard on the road.

Signs of Transmission Trouble:

It is essential to know the early signs of transmission failure in different types of transmissions. Detected early enough, you can fix a transmission with minor repairs. Ignoring any following symptoms may lead to complete transmission failure and major repair expenses.

General symptoms for vehicle transmissions:

Slipping Gears: Poor or unpredictable acceleration when shifting between gears and experiencing unusual revving of your engine is a troubling sign of transmission issues and should be inspected immediately.
Burning Smell: A burning smell from the transmission is an indication that the system may be overheating, the transmission fluid is burning, and serious damage is occurring.
Noises When in Neutral: Transmission noise while the vehicle is in neutral can mean that the vehicle may have a problem with the torque converter, transmission pump or that it is low on transmission fluid, and you have a transmission system leak. In more extreme cases where the pump, converter, or associated parts have become damaged, the vehicle may need a complete transmission replacement.
Leaking Fluid: Your vehicle may be leaking transmission fluid. Low fluid is a sign of a leak, and an extremely low fluid condition can cause serious damage. The fluid color may vary due to several factors, such as overdue maintenance, overheating fluid, contaminated fluid, or incorrect fluid. Healthy, fresh fluid is light in color and doesn't have a burnt smell.
Check Engine Light On: A check engine light (CEL) may be illuminated for several reasons and is not restricted to your engine. Transmission trouble may trigger a check engine light (CEL). Any warning lights should be diagnosed immediately at a professional repair center.
Unusual sounds: If you hear any humming, whining, clunking or louder-than-usual noises, have the transmission inspected as this could be a sign of major problems.
Unresponsive: If your transmission is not responding when attempting to shift into drive or reverse, this is a sign of a significant issue and should be taken into a professional service center.

Symptoms specific to manual transmissions

If you have a manual transmission, most all of the symptoms above can apply to signs of transmission or clutch trouble, but with an extra few listed below that deal primarily with the clutch:

Difficulty shifting gears: The transmission is not allowing you to shift gears properly, smoothly, or it is popping out of gear.
Grinding or grumbling noises: These noises may occur when pressure is applied to the clutch pedal or while driving down the road in a particular gear or gears.
The clutch pedal feels “odd”: If your clutch pedal sticks, vibrates, feels spongy, low, or loose, these are all indications of a possible clutch system issue.

Symptoms specific to CVT transmissions

Continuously Variable Transmissions (CVTs) use a variable pulley and metal push belt system to vary the gear ratio instead of traditional transmissions that use fixed gears and ratios. Errors within this type of transmission can include the symptoms listed above for automatic transmissions but can also encompass a few others:

Sudden jerking, lurching, or acceleration: Such unexpected and awkward movements can be alarming (and dangerous!) and may signal an issue with the transmission fluid (a leak or diminished quality), push belt and pulley problems, or other internal parts of the CVT.
Delayed or slow shifting: When shifting the car into reverse or drive, there is a slight hesitation—or delay—before moving.
Shaking at high speeds: A car with the shakes can indicate various tire, suspension, brake, or driveline issues but can also be associated with transmission errors when paired with other noticeable symptoms, such as delayed driving, slow or slipping shifting, and burning smells.

Steps to Have Your Transmission Repaired

Having your transmission repaired doesn’t have to be complex. Here’s a four-step process on what to expect and how to have your transmission repaired:

1. Choosing a Transmission Repair Center

Transmission inspection and diagnostics should always be done by a professional repair center specializing in transmission repair. Here are a few basic pointers to help narrow down the field:

Obtain recommendations from trusted sources, such as neighbors, friends, and family.
Carefully read online reviews from reputable sources such as Google, Yelp, and others that can indicate a repair center’s customer service level and reliability of repairs.
Make sure the technicians are professionals and certified in transmission repair.
The process should include an accurate estimate of the total repair cost in writing, with your signed permission before beginning any work.
Ask about warranties. Any transmission repair center that is honest and performs quality work will ensure service with a warranty.

2. Diagnose the Problem

Once you have selected the right transmission center, the technician will get to work on diagnosing your transmission problem. The specialist will use diagnostic tools during a transmission inspection, perform a visual inspection of the transmission and related systems, and take your vehicle for a test drive. This will help the technician understand and replicate your concern, and experience what may be wrong with the transmission. Some common issues a technician may find are:

Leaking transmission fluid
Low or poor condition transmission fluid
Clogged transmission filter
Worn gears
Bad clutch or clutch issues
Torque converter issues
Diagnostic trouble codes
Computer and communication problems
Engine performance and other related system problems affecting the transmission
Wiring or solenoid issue

3. Discuss Your Options

Once the repair center has detected the source of the issue, they will discuss the best available repair options. These options will likely include a conversation about a minor repair. If a major internal problem with the transmission is discovered, a rebuilt vs. remanufactured transmission may be discussed. Repair recommendations can also be influenced by your budget, the type of transmission you have, the issues you’re experiencing, and the overall condition of your vehicle, among others.

Better Transmission Maintenance for the Future

The best way to prevent significant repair and replacement costs with your transmission is to practice proper and timely routine maintenance. Here’s a look at four ways that you can keep your vehicle’s transmission in top shape.

Don’t skip routine maintenance: Routine maintenance is the most cost-effective way to keep your vehicle in top shape. Auto experts recommend that your transmission fluid be inspected at every oil service. Also, ensure that the transmission fluid is replaced every 30,000 to 60,000 for manual transmissions and CVT vehicles and every 60,000 to 100,000 miles for automatic transmission vehicles. This can vary depending on how and where you drive. Check your owner’s manual for specific mileage and time intervals.
Know signs of trouble: Early detection will save you headaches and money down the road. Know the signs of transmission trouble such as leaking fluid, slipping or delayed shifts, burning smells, and strange sounds from your transmission. Don’t wait to have your vehicle checked when you experience any symptoms.
Always use a transmission expert: Be sure to use a transmission expert for all transmission maintenance and repair work.
Avoid driving behaviors that can affect the life of your transmission: Avoid straining your vehicle’s transmission by carrying or towing excessively heavy loads, aggressive stop-and-go driving, tire burnouts, rocking the vehicle when stuck in mud or snow, and sloppy shifting.

Looking for a Trusted Transmission Shop in Knoxville, TN?

AAMCO Knoxville is an experienced, reliable transmission repair shop with the right transmission experts for your transmission and car care needs. Schedule an appointment with us today!

How to Prevent Winter Damage to Your Transmission

Mon, 10 Jan 2022 18:33:41 GMT

The winter season is upon us in Tennessee. Even though the winters in this region are milder than in other parts of the country, that doesn’t mean measures shouldn’t be taken to shield your vehicle’s transmission from what winter brings: freezing nights, rain, ice, and slush, all of which can affect it over time. In today’s blog, we’re focusing on tactics you can employ to protect your transmission from winter weather.

Why Is It Important to Protect Your Transmission?

What difference does it make if the transmission receives special protection or not? Will it make any difference? Simply put, yes. It’s critical that drivers take preventative measures to protect their vehicle’s transmission because their vehicle cannot function properly or safely without it. The transmission manages the shifting of gear ratios, and the mechanical parts within the system are intricately interconnected.

What Happens to a Transmission During the Winter Months?

The first step towards preventing damage to your transmission in the winter is to understand precisely what these cold months are doing to your vehicle. Knowing solutions for each of these problems will help prevent these issues or allow you to deal with them properly if they should happen.

Gears

The Problem: The cold weather can affect fluid and lubrication, which can cause things to move a bit slower and harder, which then causes the transmission to shift harder. It’s not just an inconvenience, either, since harder shifting means that various components are put under undue stress, increasing the likelihood of faster wear or even failure.

The Solution: Storing the vehicle out of the cold will help prevent low temperatures from affecting the metal components within the transmission. Slower driving for the first few miles to allow the vehicle to warm up will also take pressure off the gears.

Water Intake

The Problem: When it comes to a transmission, water is enemy number one. If even small amounts of water make it into the transmission's inner workings, disaster starts to ensue. If you fail to properly deal with any water intake, you can end up with a failed transmission that needs a (costly) replacement. The fact is that your transmission band and clutch linings naturally absorb water, which sooner or later gets onto the metal backings where rust can occur, causing the linings to lift right off.

The Solution: Avoid driving your vehicle into any standing body of water, no matter how shallow. If there’s standing water on the road, slow down and try your best to go around the water. If you get stranded in deeper water, you should not attempt to start the engine under any circumstances.

If you have any reason to believe water has made its way into your inner transmission, immediately call for roadside assistance.

Does Driving Behavior Impact My Transmission in Winter?

Mechanical issues do not entirely cause problems with the transmission in winter. There are also driver behaviors that can lead to damage and other negative impacts on the transmission.

Excessive Idling

In the previous section, we discussed the need to warm up your vehicle in winter. This is still the case, but the way we need to do that has changed. Four decades ago, leaving the vehicle idling on the driveway was the standard way to warm a vehicle up before travel. This does not work on more modern vehicles—especially those with automatic transmissions.

Idling the vehicle while it is in Park “P,” for example, means that the main components are whirring away, but without the proper lubricating oil getting through. While in Park, oil flow doesn’t begin. Therefore, it’s better to start the vehicle up, then just drive slowly for the first few miles while your vehicle warms up.

Leaving your vehicle idling can leave you vulnerable to becoming the victim of a “puffer”—a vehicle thief specializing in stealing idling vehicles—or getting the attention of the police. In 31 out of 50 states, it’s against the law to leave your vehicle idling!

Interactions with Snow and Ice

One other set of behaviors in winter that’s bad for our transmission is how we deal with getting stuck in the snow or on an icy patch of the road when the occasional winter storm hits. The common reaction to this situation is just to spin the wheels to try and drag oneself out of it, which makes sense in our minds. Mechanically, however, this is a terrible idea.

Why? Because as you're spinning your wheels, your transmission fluid can reach critically high temperatures because no air is moving around the transmission or through the radiator to keep the fluid cool. If your tires spin long enough, transmission fluid can become so hot it can warp and damage the inside of your transmission. Also, transmission fluid has a much shorter lifespan when overheated. The best course of action is to call roadside assistance.

Vehicle Maintenance Matters Most

Ultimately, regular servicing of your vehicle to identify and prevent the worsening of minor issues is the best way to avoid premature damage caused by the winter cold. Consider timing your vehicle’s annual service right before winter sets in so that you can ensure your vehicle is in tip-top condition to face the chill fearlessly. If you haven’t already, get your vehicle checked out as soon as possible by scheduling an appointment with AAMCO Knoxville today!