Top 20 1991 Ford F250 Questions & Answers

Are we looking at the ignition switch or the turn indicator switch, If it is broken replace it .

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

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.

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

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

Lube the starter pinion with graphite in stead of oil or grease for cold weather

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

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.

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

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.

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.

STEERING GEAR BOX PROBABLY BAD NEED TO REPLACE IT RUDY PEREZ

Yes, under the truck find the linkage(drivers side). The bar that goes to the throwout bearing bracket will have a threaded arm, with a nut. This is the adjustment. Being a 91, you better have a torch ready to heat the nut and arm up. otherwise it will break. Could break anyway.

with everything turned off take live terminal off and touch it against the battery post and if there is a spark something is still on?

you might have to use a block of wood and a hammer to rap it a couple of times , it should slide off.try w40 to loosen it up

on the early fords they had a problem with the firewall cracking. have some one operate the pedal if mater cylinder is moving then get repair kit from ford

Why? The EFI is a far more dependable and efficient system. Why would you want to take a step back and create more trouble than it's worth?

What kind of car?

If fuses are good the hot or ground wire has an open (broken wire). Try a visual for a broken or disconnected red or black wire. The red wire should have 12 volts when the key is turned on.

Check the fuel pressure. Check for fire on sparkplug.