Common Causes of Transmission Fluid Leaks

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Having a shiny clean car parked at driveway would not get you the praise if it leaves behind a puddle of liquid on the road. It is common for cars to have transmission fluid leaks and they often go unnoticed till the damage becomes unignorable. Usually, this leak happens when you see a puddle of red liquid beneath your vehicle. It often stains your driveway and garage floor and demands a costly repair or fluid replacement.

It is common to see transmission fluid leaking from the front of your car. You will notice it when you park it. It is also common to have transmission fluid leaks only when running. In all cases of leaking, it is important for a mechanic to inspect your vehicle to find out the location of the damage depending on how the fluid is leaking.

However, there is a way for you to avoid this. As they say, prevention is better than cure, knowing the causes of this leak can surely save you the transmission fluid leak repair cost. The leak may be a sign of some critical problems with your vehicle that may put your safety in jeopardy. This is why it becomes important for you to check for the signs early on.

Here are the possible causes of transmission fluid leaks:

Damaged Drain Plug

The drain plug in the transmission pan of your vehicle may be a cause of the leak, especially if you have an old car. Even in a new car, the drain plug is prone to damage due to big rocks or concrete debris on the road. The transmission pan may get punctured or have loose parts that may cause the fluid to leak. If you have recently changed your transmission fluid, it is important to check the plug or the blot and see if it is fitted properly.

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Damaged Gasket

The transmission pan of your vehicle also houses the gasket that can get damaged or cracked. The alignment of the gasket is also important to ensure that there is no transmission fluid leaking fast from the transmission pan. Exposure to excessive heat can also cause the gasket to damage. If you notice a damaged gasket, you should replace it immediately so no further damage is caused.

Leaking Torque Pump

The torque convertor pumps the transmission liquid throughout the mechanism. A leaking torque pump is one of the most common transmission fluid leak symptoms that need to be taken care of. It can be due to a damaged needle bearing or damage on the body of the torque pump which needs to be replaced by a mechanic.

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Cracked Fluid Line

The fluid line that is otherwise sturdy may still get damaged due to overheating or debris on the road. Gaps in the fluid line may especially cause transmission fluid leak when parked. This may require you to replace the line altogether.

Broken Sealer

The transmission fluid sealer is responsible for managing the hydraulic pressure. If this seal gets overheated, it is prone to breaking or cracking. This leads to fluid leaking through many areas in the transmission. In this case, you must properly check the input shaft as well as the output shaft. If you don’t see a leak from there, you should check all over your vehicle including the driveshaft, sensors and valve body.

The average transmission fluid leak repair cost is between $100 to $150. However, considering the safety of you and your loved ones, this amount is only an investment.

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