Q: transmission pan continues to leak after replacing seal, took the pan off twice now will not seal?

asked by on

Tranny sprung a leak at back driver side corner between pan and tranny. Pulled pan off installed cork type gasket with tranny gasket sealer. Filled tranny with new atv ......leaking in the same area just larger leak. Pulled pan off again, used re-usable gasket with gasket sealer and still leaking? I did check the pan for warps between screw holes, adjusted pan some, 1/16th inch out of level in spots.

There has to be some problem with the mating surface on the transmission or the pan and seal. If there are any pieces of the old seal on the pan, the chances the pan will leak at that spot are pretty high. Look closely with a flashlight to see if there are any cracks along the mating surface or pan where the leak continues and clean the area well to be sure it is the pan and not a leak from higher up coming down on the pan. Many mechanics will use a scraped along the surfaces to make sure any debris is knocked off before adding a new seal and sealer. Also, allow the pan sealer you are using to cure for a couple of hours before adding fluid to the transmission. Consider hiring an experienced technician like one from YourMechanic who can come out to take a closer look and offer a more personal diagnosis.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. transmission pan continues to leak after replacing seal, took the pan off twice now will not seal?

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: How do you disarm the Perimeter alarm?

Your car’s Perimeter alarm provides substantial protection from theft and break-ins, but you’ll need to know how to disarm it to get back into the car. There are several ways that you can disarm the system, including the following: ...

Q: I installed new front air shock last night now I am getting a "cat fault" reading on dash display

Hooking the battery positive cable up first is actually recommended. then there is no chance of arcing your wrench against a metal part of the car. I always disconnect the ground cable first and re-connect it last. It's possible your...

Q: Started hits flywheel but won't turn till crank is turned half turn

The first thing to check is the battery voltage. It should be 12.6 if the battery is fully charged and shouldn't drop below 10 when the starter is engaged. You might just have a weak battery and some engines are...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...