Why is fluid leaking from the rear of the transmission?
Recently I encountered a situation where fluid was leaking from the rear of the transmission. The owner thinking it was the rear seal at the output shaft housing – replaced the seal. A few days later the leak reappeared and the owner brought the car to my shop to diagnose the situation.
Can a transmission pump leak from the rear main seal?
If the fluid is red, it is automatic transmission fluid and the transmission’s oil pump seal is most likely at fault. Always check the transmission fluid’s color because ATF will turn brown from heat and oxidation. Rear main seal leaks are common, so if the color of the fluid is brown, it’s most likely oil leaking from the rear main seal.
What does a leaking transmission fluid stain look like?
This means that your leaking transmission fluid is new. If the stain has a brownish color, then you won’t see a halo surrounding it, because of the increased viscosity. Keep in mind that an older transmission fluid stain can look much like that of a motor oil leak. A transmission fluid leak occurs due to degraded or damaged transmission seals.
How much does it cost to repair a transmission fluid leak?
If you have fluid leaking from your transmission, the typical cost to repair the leak (without taking off the transmission) is between $150 and $200.
How do you fix transmission fluid leak?
If it is simply a small leak then try to go to the store and buy a bottle of stop leak. There are multiple brands, but try to get one that looks like it is a higher quality one. Lift up the hood of your car and locate the transmission fluid cap. On most cars it is a red cap attached to a dipstick.
What would cause a transmission pan to leak?
- your transmission pan will eventually experience some wear and tear.
- Seals are Broken. An automatic transmission sustains hydraulic pressure through a variety of transmission seals.
- Transmission Pan Gasket Fails.
- Torque Converter Leakage.
- Fluid Line is Cracked.
Why is my transmission leaking?
Common Causes of Transmission Leaks. Transmissions often leak from a loose pan, caused when bolts aren’t properly tightened after a filter is changed. Alternatively, drain plugs will leak when they aren’t adequately secured after changing or flushing the transmission fluid.