I was driving one night and the truck shut off and came to a rolling stop

MICHAEL SCOTT2

MEMBER
1990 FORD F-150
5.0L
V8
2WD
AUTOMATIC
100,000 MILES

I was driving one night and the truck shut off and came to a rolling stop. All accessories (other than headlights) all went of. I turn the key nothing. I run a wire from the battery to the ignition module and jump the solenoid to drive it home. I have already replaced the lock cylinder, ignition actuator, and ignition switch and still am unable to get anything to work. Accessories will work with key only when the wire is ran from the battery to the ignition module.

3 Replies

JDL

MECHANIC
16,098 POSTS

It sounds like the crankshaft angle sensor, main control relay or fuel pump is going out but the be sure lets go over these guides to help us fix it the problem. The should scan for codes as well you could have a MAF or MAP sensor going bad which will leave a code (a bad crankshaft sensor will not leave a trouble code FYI). When the engine stalls lift he hood and check to see if any of the relays are hot in the main fuse panel (PDC).

https://www.2carpros.com/articles/engine-stalls

and

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Please run down these guides and report back.Note the diagram, the TFI module and positive side of ignition coil get voltage from same source. Maybe something wrong with wiring circuit to TFI module that carries voltage to module, red wire with lite green tracer. Just to add, any component that doesn't work, check voltage and ground. Make sure battery has a full charge and connections all good. The first part of my post was mainly about voltage to TFI module.

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