20 Most Recent 1990 Ford F250 Questions & Answers

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

Are they interval wipers?

1990 Ford F250 | Answered on Mar 20, 2016

LH Front Of Radiator Support

1990 Ford F250 | Answered on Mar 20, 2016

You will need to buy a Clymer workshop manual. First rule of taking things apart it to keep everything in the order you took it apart. These days you can also take cellphone pictures.

you can try this site which seems legit and has diagrams.

Ford Workshop Manuals

1990 Ford F250 | Answered on Jan 19, 2016

From my experience it's usually the fuses, check all of them. It's easy to tell which one it is because they often look burnt / blackened on the top. If you're not sure, shine a flashlight through it, the small metal wire inside should look like a horseshoe shaped arch. When they burn out, the arc is usually melted or broken - or there is a gap preventing the electrical connection. If a fuse is not the problem, the next thing I'd check is the switch itself. Remove the unit ( or the wires going to it ) and make sure that all the wires are connected, and that there's no corrosion on the wire clasp. If they're a little loose just crimp them with pliers. (When the wires to the switch are exposed, you can bridge them with a small piece of wire, the lights should come on when you do - that way you can tell for sure if it is the switch) The only other thing I can think of is the ground wire, without it the circuit can't bridge. So if all else fails, find the ground and make sure it's connected firmly, and that there's no dirt, oil or rust preventing the current from grounding. Hope I helped, Grim

1990 Ford F250 | Answered on Dec 13, 2015

Most likely to be the switch, as a rule, when the motor goes out, it doesn't come back. Hope this helps if you have not figured it out by now. Good Luck!

1990 Ford F250 | Answered on Dec 01, 2015

Its under the dash board at the base of the steering column. Its red. Should be a button that needs pushed back in

1990 Ford F250 | Answered on Nov 21, 2015

The spark should come from the coil tower when you remove the ground side of the circuit.

1990 Ford F250 | Answered on Oct 13, 2015

Bad coil, ignition module, crank or cam sensor.

1990 Ford F250 | Answered on Oct 06, 2015

if your talking about just the rad it will hold about 3/4-1 gallon. if its the complete cooling system then it will be about 3-4 gallons total.

1990 Ford F250 | Answered on Sep 09, 2015

My Econoline 250 with 4.2 lost fluid from hose leak, fixed leak everything was normal for 3 days till I drove it on highway. When it went into overdrive lost forward power. Turned off OD and did ok for a while. Lost forward gears slowly, put in fluid, hard to tell when full. Reverse is fine but have to rev up engine to get forward to engage, then everything is fine at lights and such till take out of drive, then have to rev engine to about 2500rpm to engage drive. Help?

1990 Ford F250 | Answered on Jul 27, 2015

if sametimes wokr posible you have a bar blower motor whit worn brushes

1990 Ford F250 | Answered on Jul 04, 2015

My advise would be to take it to a dealership and ask them to put it on a computer and print out the problems! It cost me around $60 to do that on my f250. Then I replaced the parts myself thru parts stores and ebay!! Alot cheaper in the long run!

1990 Ford F250 | Answered on Jun 17, 2015

Not sure I understand your question. A 7.5 ltr Ford would be a V8.
There should be a starter solenoid on the fender that powers the starter. Are you trying to put a switch on the dash for that solenoid?

1990 Ford F250 | Answered on Jun 14, 2015

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