My 91 ford explorer won't start?
it could be a bad solenoid or the starter is stuck. try tapping on the starter and try it.
My 91 ford explorer won't start?
I believe what you've got is a bad starter solenoid. It if found near the battery on the fender well.
Note: as a test shorting across the two large terminals should cause the starter to turn the engine.
Good Luck