Transmission Fluid Leaks from the Front of the Transmission Bell Housing on Ford E-250

Problem Description and Possible Solution

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.

Problem Data
RepairPal Verified
Average mileage: 151,617 (52,000–225,383)
Drive Trains affected: 4 Speed Transmission, 5 Speed Transmission
15 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2008, 2011
32 people reported this problem
Viewing 1 - 10 of 10 comments
I was pulling a trailer for about 60 miles today, and started smelling something smokey. I got home 2 miles later and noticed tranny fluid dripping out of tranny between bell housing.

It drips/pours out quite a bit when motor is running.
Fluid pouring from between front trans and rear engine; bell housing area.
front pump seal failure
leaks in front of tranny and motor in ther middle of them
Pulling aPulli and seemed like seal on front of transmission just let go and ran until it ran out of fluid then that's where I'm at now
due to dry rotted 4x4 vacuum tubes at front hubs 4x4 did not engage truck heated transmissioonproblem began with transmission leaking fluid from near housing
same as mentioned
Had some with something changing gears recently I took it to a transmission shop and they said they can't find anything with it. Yesterday last four blocks poured transmission fluid out the bottom front.
All y fliuds dropped out at once