20 Most Recent 1991 Ford F250 - Page 6 Questions & Answers

Idle air control valve remove the throttle body and clean it thoroughly still have the same problem replace the IAC

Check the voltage on the pink black wire to the cut off switch if this is not 12v coming out the inertia is bad

Hi,The fusible link is a WiRE with a connector socket.Most of the fusible link is located at the engine bay fuse box/relay.It is use as a main power source fuse for high amperage voltage.Hope that helps.

I think you have a couple of problems going on here. First a solenoid would not cause the engine to lose power until it dies. This problem will probably be an alternator going bad, bad battery, or bad battery connections (check ground wires on engine, body, and battery then check positive wires on battery and to power distribution block). These related issues can be the root cause to solve the starting issue, which I will discuss now.I recently repaired a 94 F-150 that would not even click when trying to start it. It was the push on connector to the solenoid on passenger inner fender well. I have also seen where this solenoid loses its ground (corrosion between screws and fender well). The 94 had two solenoids, one on the fender and one on the starter. To see if the solenoid valve is good, you can use a jumper wire from the hot side of the solenoid to the small terminal stud. If it clicks it should be okay and the ground okay. Be sure to have the vehicle in park or neutral with the parking brake on before doing this, because you are bypassing safeties.

usually caused by leaky injectors. Pull the fuel rail off leaving injectors intact on the rail. Cycle the key on and off seveal times to pump up the system. Replace any injectors that leak. Let me know if you need instructions. OK?

Hello and welcome to FixYa!
Yes there can be a short but the battery connectors can be loose that's why the current fluctuates during start up.Try to tighten the battery connectors and cables. Check the negative cable as well. I believe you'll be good after.
Hope this helps and thank you for using FixYa! Have a good one!

That has a built-in `slip mode' on the gear. The works must either be stiff or stuck or the motor needs a new kit,or just install a new motor if the works inside are good. Not a hard job,really.Just drill out the motor rivets and bolt in the new one. don-ohio

here are all the ford firing orders http://www.therangerstation.com/tech_library/FiringOrder.html

Hi there.
The end of the thermostat with the copper tube with the spring around it goes inwards ( engine side ).
I hope this helps you
John ( South Wales UK )

Check the fluid leve,It may be too low.