Quote:
Originally Posted by Greg Reid
check what voltage you have on the solenoid from the ignition switch...
...I checked the ignition switch voltage at the 'S' terminal solenoid when the ignition switch was turned. It was 4 volts. The purple solenoid wire from the switch had been baked into a resistance wire. Too weak to fully engage the starter. Changed the wire and no more problems since.
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Common as dirt.
The main reason folks put a "Ford Solenoid" on the fender, is because they don't have sufficient voltage at the starter solenoid end of the "purple wire".
This (photo attached) is what I cut out of my '97 K2500. Even the "good" end of this wire is too corroded to solder-to.
The wire was corroded back behind the engine, where I had no access to solder. I ended up splicing new wire into the harness above the engine, dropping ~3 feet of new wire down to the solenoid.