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Most Common Automatic Transmission Problems: Diagnosis and Repair

Kevin V


Automatic transmissions are a critical component of modern vehicles, providing smooth gear shifts and ease of driving. However, like any other mechanical system, they can experience issues over time. As a car owner, it’s important to be aware of the most common automatic transmission problems, their symptoms, and how they can be diagnosed and repaired. In this blog post, we will discuss some of the top automatic transmission problems and provide insights on how to address them.


1) Slipping Transmission:

One of the most common signs of a slipping transmission is when the engine revs up but the vehicle fails to accelerate as it should. This can happen while driving or when shifting gears. A slipping transmission can be caused by various factors, such as worn-out clutch discs, low transmission fluid levels, or faulty shift solenoids. If you notice your vehicle slipping gears, it’s crucial to have it diagnosed by a professional mechanic as soon as possible. Ignoring this issue can result in further damage to the transmission.


2) Transmission Fluid Leaks:

Transmission fluid is essential for proper lubrication and cooling of the transmission system. If you notice reddish fluid leaking from your vehicle, it may indicate a transmission fluid leak. This can occur due to a damaged seal, gasket, or pan, or a loose drain plug. Neglecting a transmission fluid leak can lead to low fluid levels, which can cause overheating and damage to the transmission. If you notice any fluid leaks, it’s crucial to have your vehicle inspected by a qualified mechanic and get the necessary repairs done promptly.


3) Transmission Overheating:

Automatic transmissions generate heat during operation, and the transmission fluid plays a crucial role in dissipating that heat. However, if the transmission is exposed to extreme driving conditions, such as heavy towing, stop-and-go traffic, or driving on steep inclines, it can lead to overheating. Overheating can cause damage to the transmission, including worn-out clutch discs, burnt transmission fluid, and damaged seals. To prevent transmission overheating, it’s important to follow the manufacturer’s recommendations for transmission fluid change intervals, avoid heavy towing or extreme driving conditions, and ensure that the transmission cooler is functioning properly.


4) Torque Converter Problems:

The torque converter is a vital component of an automatic transmission, responsible for transferring engine power to the transmission. If you experience shuddering or vibrations during acceleration, it could be a sign of a faulty torque converter. Torque converter problems can occur due to worn-out needle bearings, damaged seals, or a malfunctioning lock-up clutch. A professional mechanic can diagnose the issue and recommend appropriate repairs, which may include torque converter replacement.


5) Transmission Control Module (TCM) Failure:

The transmission control module (TCM) is an electronic component that controls various functions of the automatic transmission, such as gear shifting, torque converter lock-up, and shift timing. If the TCM fails, it can cause erratic shifting, slipping transmission, or even complete transmission failure. TCM failure can occur due to electrical issues, software glitches, or wear and tear over time. Diagnosing TCM failure requires specialized diagnostic tools, and replacement may be necessary to restore proper transmission function.



As a responsible car owner, it’s important to be proactive in addressing any automatic transmission problems you may encounter. Regular maintenance, prompt diagnosis, and professional repairs are key to keeping your transmission in good condition and ensuring your vehicle’s reliability on the road. If you’re experiencing any symptoms of automatic transmission problems, such as slipping gears, fluid leaks, overheating, torque converter issues, or TCM failure, don’t hesitate to bring your vehicle to New Again Auto Repair, the best auto repair shop in Silver Spring.

At New Again Auto Repair, our team of experienced and certified technicians has the expertise and state-of-the-art diagnostic equipment to accurately diagnose and repair automatic transmission issues. We pride ourselves on providing exceptional service and using high-quality parts to ensure the best possible results for your vehicle. Whether it’s a simple transmission fluid change, seal replacement, or more complex repairs, you can trust us to get the job done efficiently and effectively.

Don’t ignore the warning signs of automatic transmission problems. Contact New Again Auto Repair today to schedule an appointment and have your transmission inspected by our skilled technicians. Your satisfaction and the reliability of your vehicle are our top priorities. Visit us at our Silver Spring location and experience the best auto repair service in the area. Trust us to keep your vehicle running smoothly and get you back on the road with confidence.




LOCATION9200 Talbot Avenue, Unit A, Silver Spring, MD 20910, US

OPENING HOURS: Monday-Friday 8:00AM – 6:00PM | Saturday 8:00AM – 12:00PM