1991 Ford E-150 Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 1991 Ford E-150
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1991 Ford E-150 ProblemsRear Axle Leaks Fluid
Common sources of rear axle leaks are the rear differential cover seal, and / or the pinion seal. Reseal the rear differential cover with the appropriate sealant and / or replace pinion seal for leakage.
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. This concern relates specifically to the E4OD and 4R100 automatic transmissions.
This concern relates to vehicles equipped with the E4OD and 4R100 automatic transmissions. Fluid leaks from the rear of the transmission and excessive vibration felt in the vehicle while driving can be caused by a lack of lubrication to the rear of the transmission and rear seal failure. The extension housing (rear portion of transmission) can lose lubrication if the fluid supply hole becomes clogged. This leads to rear seal failure from lack of lubrication, and can cause bearing failure in the extension housing. The extension housing and gasket should be replaced and verify the fluid supply hole is clear of debris.
1991 Ford E-150 Questionshow to fix gas problem (1 answer)
have a 1991 ford e 150 econoline have duel thank the gas is sic-fume gsa from one thank to the other backward and forward how to fix this problem
The air will blow out on the windshield for the defroster. Are there vacuum lines which control this?
Replaced the fuel pump in the front tank. replaced the ECM computer. Pulled the code 542 and the tank switch is reading fine. Truck still isn't getting fuel