How do you reset the shut off switch on a 1990 Ford F250

Good Afternoon DeLisa

If you follow this link,
Where is the emergency fuel shut off sensor
there is a discussion forum that shows where the pump switch is on a 1990 F250. It is very likely in the same spot on yours.

Good Luck!
D

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?

You know, sometimes a pump goes bad and needs to be replaced. Have your mechanics test it

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

Well the brake light and turn signal circuits are on two different fuses, but they both go thru the turn signal switch.
So I would start by checking for power in and out of the turn signal switch for each circuit.

Have you checked for 12 volts coming in going out of the the starter solenoid switch that is mounted passenger side fenderwell.

The Inertia switch, located on the passenger side floor board against the right side kick panel. At the top if it is a button, put you finger up in there and you will feel it. Press it back down, just like a push button switch, it should stay down. If it doesnt the switch is bad, but unlikely.

Check with your parts man and see if your Year model uses a ECM Relay. There is a fusible link and an Inertia sensor too.. The inertia sensor is either in the area of the passenger kick panel ( may have access hole) or the drivers kick panel (may have hole). Either side you need to push button on the switch to reset fuelpump.

If that does not help I understand a fusable link is either feeding the Inertia switch or the ECM Relay.

Mine broke 3 times before i by-passed it and installed a push button below the dash. I still have to turn the key, but then i simply push the button to start it. I got tired of replaqcing the ignition.

Check the ignition switch.