20 Most Recent 1990 Ford F250 Questions & Answers


The first thing to do is to have your alignment checked again. Wear on the inside edge usually points to an excessive negative camber problem caused by a bent suspension component or something like a worn ball joint. In some cases it can be caused by excessive toe out.
Alignment shop will be able to diagnose what is causing the neg camber.
Throwing parts at it is not a good idea could be just one part or multiple parts acting together. That's why a reputable alignment shop is in order.

1990 Ford F250 | Answered on Jan 30, 2018


get the service and repair manual from the given link with diagram and fix the fuel pump by your own http://toolsnyou.com/

1990 Ford F250 | Answered on Dec 12, 2017


I believe there is an o-ring on that fitting that should have been replaced. Was that done?

1990 Ford F250 | Answered on Nov 17, 2017


It half sounds like a problem with the safety switch for the starter lockout. On a stick shift it may be on the clutch pedal but is on the brake pedal for automatics. This assures that your foot is on the brake pedal so the vehicle does not lurch when you start it.

This would show up in the restarting process, but it is intended to lock out the starter and would not interfere with an engine that is already running. So to keep the engine running feathering would not have anything to do with the starter lockout.

1990 Ford F250 | Answered on Nov 11, 2017


For your age truck, the system had an earlier diagnostic setup. The scanners that read it are not very expensive and such a scanner may reveal the problems.

In your case, some of the issues may be a reaction to the failure to start because there are automatic shut-offs when one part of the system fails. The crankshaft sensor for example controls the volume of fuel by regulating pressure for a given RPM and it okays spark for the engine. So nothing is wrong with the fuel system or the coil, but each is controlled by the crankshaft sensor.

This is why a spray of starting fluid may make the engine run on ether and bypass the automatic shutdown of the fuel system. The engine RPM's may reboot the ignition system.

You can sometimes borrow testing tools from the major autoparts stores. I was also going to say that a stuck thermostat sensor can make an engine too lean to start, but you indicated no fire at coil and you would have ignition power no matter what the temperature sensor indicated.

Check out youtube videos about the crankshaft sensor. Get a scanner for your age of truck, it may save you money.

1990 Ford F250 | Answered on Jul 19, 2017


You should either check the neutral switch on the column inside by the base or the steering wheel or replace it. Sounds like it maybe shorting out or a wire is pinching.

1990 Ford F250 | Answered on Jun 24, 2017


What Engine do you have?

1990 Ford F250 | Answered on Jan 05, 2017


Did you check the battery or the ground wires why would put all that in the truck.the computer has to be the right one wow.goodluck parts chaser.you would have safed a lot of money taking it to a shop to diao it man wow ha.

1990 Ford F250 | Answered on Dec 10, 2016


Well the normal way would be to use a acetylene torch an heat it up cherry red an twist it off . Not the cat , the connections .

1990 Ford F250 | Answered on Oct 13, 2016


if it is a carby, the problem is the carby
if it is EFI pumping is useless so have the codes read to define the fault area

1990 Ford F250 | Answered on Oct 04, 2016


problem diode in the charge circuit , problem voltage regulator
a relay in the system stuck or failing to ground

1990 Ford F250 | Answered on Oct 02, 2016


It is your water pump... If it hasn't been changed you have probably blown the fins and it is done... stop driving and replace immediately... very cheap to buy the part... it is located under the thermostat... you should probably flush that system with the water pipe off on the return side with a garden house to be sure all the chunks are you.. then refill with good antifreeze or coolest THE TYPE RECOMMEND FOR YOUR CAR... as not all rubber pipes play nice with the wrong coolant... also make sure your thermostat is the right way around.... put in backwards and it will actually work to over heat the car... summer time you don't even need to have one in.

1990 Ford F250 | Answered on May 18, 2016

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