Ford E-350 Problem Report
Ford E-350 Transmission Fluid Leaks from the Front of the Transmission Bell Housing
This concern relates specifically to the E4OD and 4R100 automatic transmissions. Transmission fluid leaking from the front of the transmission bell housing may also be accompanied with shifting and transmission engagement issues. This is often caused by transmission overheating and is the sign of a significant internal transmission problem. The superficial cause is the failure of the front pump seal of the transmission. The immediate repair is to remove the transmission, replace the front pump and seal, replace all fluid with the transmission filter, and verify proper flow through the transmission fluid lines and cooler. It is also recommended to make sure the vehicle is not pulling a load that is heavier than the gross vehicle weight limits because this can cause the transmission to overheat. Depending on the transmission's mileage, this can also be a good time to consider a complete overhaul or replacement with a remanufactured unit, as often just the pump and seal replacement is a short lived remedy.
I am not sure where the fluid leaked from on mine. The trans overheated and leaked. It required additional trans fluid to move forward. When the trans was cool and not under severe load then everything runs fine. No leaks. Some have mentioned this is possibly a torque converter seal failure.
The mechanic, not a trans specialist though, did not see any leakage and has not concluded yet. He is wary to drop a trans thinking maybe it was just the over flow tube.
It has been driven about 200 miles since the leak (just to get it home) with no issues.
It only leaked up a steep driveway when trans was already hot.
Ideas? - Visitor
Transmission fluid started leaking severely from the front bottom of the housing near the engine connection - Visitor
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