1991 Ford E-150 Problems

A defective thick film ignition (TFI) module can cause the engine to stall while driving, or the engine may not start.

On vehicles equipped with the E4OD (4-speed automatic) transmission, harsh engagement of the automatic transmission when shifting into reverse or drive, and irregular shifting while driving can be ...

Electrolysis can cause repeated failures of the heater core and radiator.

This concern relates to vehicles equipped with the E4OD and 4R100 automatic transmissions.

The engine may have a misfire, hesitation, and/or run roughly – notably after a service and/or ignition wire replacement.

Transmission fluid leaking from the front of the transmission bell housing may also be accompanied with shifting and transmission engagement issues.

In some cases with higher mileages, the Check Engine Light may come on due to insufficient Exhaust Gas Recirculation system (EGR) flow.

Common sources of rear axle leaks are the rear differential cover seal, and / or the pinion seal.

If the slip yoke in the driveshaft is binding, it can make a clunking noise when pulling away from a stop.

This concern is relating to the AOD automatic transmission typically seen mated with the 4.

The front end may make a rattle noise over bumps.