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Chris, Auto Service Technician
Category: Car
Satisfied Customers: 13644
Experience:  43 years of automotive repair, Smog license
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smoke..comming..transmission vent that is next to the tran dipstick

Customer Question

every once in a while while driving on the turnpike at about 70 miles an hour . i will look back and see a large amount of smoke behind me , i thinkit is comming from the transmission vent that is next to the tran dipstick it does not happen all the time i dont know if it is outside temp related but it has been happening sibce two years ago when i hade the oiland filter changed
Submitted: 5 years ago.
Category: Car
Expert:  Chris replied 5 years ago.

Hello and welcome to just answer. What color is the smoke?



Customer: replied 5 years ago.

the smoke the best that i can see is a light gray white . but the smoke is because its burnning on the exhaust the bottom of the center trans and crossmembers has transmission fluid on it


Expert:  Chris replied 5 years ago.
Ok then you obviously have a transmission fluid leak and from the description of where you see fluid it sounds to me like a transmission front pump seal. What you need to do is to clean off as much oil and fluid on the transmission and then drive it a couple of days. Then look and see where the fresh fluid is coming from. If it is around the bell housing area then it is most likely a front pump seal and the trans will need to be removed to fix that. This may be just a leaking trans oil pan. If it is the pan then that would be a much cheaper repair.