Causes of Transmission Fluid Leaks

The causes of transmission fluid leaks are fairly common, and the problem often announces itself with brownish-red stains on the ground. It might seem like a minor problem but ignoring it could lead to a costly repair. That's not the only symptom of transmission fluid leaks, though. At Mr. Transmission, we know all the symptoms to watch out for. And just as importantly, we establish the root cause before proceeding to repairs or rebuilds.

Identifying Causes of Transmission Fluid Leaks

Mr. Transmission can quickly find the cause of your transmission fluid leak. Once that is determined, our team will advise you of the best option.

• Dirty Transmission Fluid: When transmission fluid is not changed regularly, the debris and dirt it contains clogs up transmission lines. That causes pressure to build up, which can break the pipes.
• Damaged/broken seals, plugs, and pans: A transmission is built with different seals that sustain hydraulic pressure. As they age, these seals break down. When that happens, fluid can leak into the input and output shafts and the driveshaft. Adding too much fluid and excess heat can also damage the seals.
• The drain plug and transmission pan can also wear out or get damaged from road debris – loose rock can even puncture the pan. Loosened plugs and blots can also cause leaks.
• Torque Converter Problems: Transmission fluid lubricates the torque converter, a coupling that connects the transmission to the engine. If that part leaks, it will need to be replaced.
• Cracked fluid lines: Some transmissions have fluid lines extending towards the vehicles' front. They're typically made from aluminum or steel but can crack and leak. If the fluid is closer to the front of your car, that could be the issue.

Other causes of transmission fluid leaks include defective parts and poor repair work and installations.

Recognizing the Red Flags of Transmission Fluid Leaks

That colored puddle or stain on your driveway or garage floor is an aptly named red flag that often indicates transmission fluid leaks. The others can be seen, smelled, or felt while operating a vehicle.

• The transmission fluid level drops. It's a good idea to check this level often with a dipstick. Top it off when it's lower than the minimum marker. If you recently did this but the level dropped, you have a red flag.
• Strange sounds. This is unusual, but you might start hearing a humming or clunking sound if the leaked fluid causes increased friction in the transmission's working parts.
• Rough rides. Low transmission fluid levels can make a car's gears slip or change roughly. The engine's RPM still climbs, but the vehicle won't move as fast as it should. There might also be acceleration delays and vibrations when changing gears.
• Unpleasant smell. The friction mentioned earlier can also cause the components to heat up, resulting in a noticeable burning smell. 
• The engine light goes on. This is the likely culprit when the telltale reddish-brown puddle accompanies it.

Transmission Repair near Cincinnati, OH

Diagnosing a transmission fluid leak is best left to the professionals at Mr. Transmission in Cincinnati, OH. We have 50 years of experience, a sophisticated computer diagnostics program, and free performance checks. Contact us today for reliable transmission repair and maintenance in Sharonville, Cincinnati, Northgate, West Chester, Mason, and Maineville, OH.