20 Most Recent 1991 Ford F250 Questions & Answers


The E4OD is a complicated tranny and unfortunately prone to many problems. There are three shift controlling solenoids inside the tranny mounted to the valve body. Without being able to actually drive to evaluate it makes it very hard to give you a starting point for trouble shooting. I have rebuilt many of the E4OD transmissions over the years and found them prone to many problems. That's why Ford quit using them. A tranny shop can hook up to two different line pressure ports to evaluate the problem. But, be warned they are going to recomend a rebuilt be installed. You will be looking at around $ 3300.00 dollars for the rebuilt unit.

1991 Ford F250 | Answered on Apr 02, 2019


remove your engine, trade it in for a rebuilt engine and install it. your head gaskets are bad or your heads are cracked. the engine is 20 years old however and makes no sense to spend a lot to fix it as its expected service life ended a decade ago. makes much more sense to call a junkyard and see if they have an engine which will bolt in with much lower mileage, unlikely, or put in a rebuild. if the body and frame are still good that is what i would do.

1991 Ford F250 | Answered on Mar 31, 2019


check the running voltage to the coil
if it is greater tan the voltage on the case , check for a problem resistor or resistor wire to the coil in the run position

1991 Ford F250 | Answered on Oct 04, 2017


How long since a tune-up? Any applicable trouble codes? If temp related check the coolant temp sensor. Sometimes ford calls it a cylinder head temp sensor. I'd also use a gage and check proper fuel pressure.

1991 Ford F250 | Answered on Sep 15, 2017


the pump is a mechanical injection pump with the high pressure of 21,000psi being generated in the pump
research shows that the f250 and f350 7.3 ltr 1988-1992 were in fact an international indirect injection engine.
(IDI)
to not have fuel at the injector lines , indicates the the fuel control is in the stopped position and so no fuel gets to the top of the elements controlling the pressure
It is a rotary pump ( looks like a petrol distributor with steel lines instead of wires)
the replacement cost is around $500.00
best if you talk with an accredited diesel professional shop as to the problem as it will not be uncommon
unlikely to have a filter in the body of the pump to cause the problem and more likely to be a broken drive shaft , stop valve blocked or pump element body cracked internally

1991 Ford F250 | Answered on Sep 10, 2017


unscrew all of the screws around the hubs and never resurface rotors on them,buy new

1991 Ford F250 | Answered on Apr 18, 2017


Clogged cat, clogged injectors, clogged fuel filter, weak fuel pump, distributor cap and rotor

1991 Ford F250 | Answered on Nov 01, 2016


Being a 91, take it back. But this really depends on who you had build it. Shade tree guy, your probably going to eat it. Garage, take it back and make them fix it.

1991 Ford F250 | Answered on Apr 29, 2015


It could be the "Main Relay" or no spark.
Some cars don't allow fuel to the engine if the computer senses "No Spark".
Hope this helps.

1991 Ford F250 | Answered on Mar 27, 2015


Have you checked fuel pressure with a gauge on both tanks ?

1991 Ford F250 | Answered on Mar 25, 2015


There are several things that I would check, Richard. The most obvious is a fuel line leak from the rear tank. Another possibility is a kinked neoprene hose near the tank's fuel pump. It the rear tank has not been used for a while the tank may have some water in it. Try a bottle or two of water remover (isopropyl alcohol). If none of those things are found, then you should get a fuel pump pressure test.

1991 Ford F250 | Answered on Mar 25, 2015


surely you jest .been working on vehicles many years and never had a clutch with wiring they are all mechanical

1991 Ford F250 | Answered on Mar 15, 2015


need to know if the hubs are auto locking or manual. the bearings have different locking set ups.

1991 Ford F250 | Answered on Feb 21, 2015


STEERING GEAR BOX PROBABLY BAD NEED TO REPLACE IT RUDY PEREZ

1991 Ford F250 | Answered on Feb 19, 2015


REAR END SPECIALIST..THE BEARING IS COMING OF THE PINION SHAFT AND HAS TO BE DRIVEN BACK ON AND SEALED SO IT WILL NOT SLIDE BACK OFF.. HAD SAME ISSUE.. COST AROUND 200.. ALSO MAKE SURE TO GET POSTIVE TRACK DIFF. ADDIVTIVE.

1991 Ford F250 | Answered on Dec 13, 2014

Not finding what you are looking for?
1991 Ford F250 Logo

437 questions posted

Ask a Question

Usually answered in minutes!

Top Ford Experts

Marvin
Marvin

Level 3 Expert

85206 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22484 Answers

gerry bissi

Level 3 Expert

4388 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

F-250 Ford

  • F-250 Ford

Most Popular Question

1991 ford lgt 1 ton wont turn right

  • Cars & Trucks
Loading...