Chris_1

iTrader: (1)

If you look above this post in electrical there's a thread "good old ford starting problem" which is a different problem, but the entire wiring circuit is explained.

ThatNewWifeSmell

I forgot to update this. I replaced the new solenoid with a quality Motorcraft solenoid and all is well. Don't cheap out on solenoids.

bcurbox

My 91 F150 302 auto has an intermittent starter staying engaged once I go to start it, it will stay engaged once the engine starts/runs, also stays engaged once I turn off the key (even pulling it out). So I would jump out of the truck, grab my hammer (only because it is in reach each time), open the hood and tap the fender mounted solenoid which in turn will immediately stop the starter from continuous cranking. I can usually go inside the truck and start it back up without it happening again. This happens every 2 or 3 times I go to start it. I've read some people say it's because of the bolts on the starter are not shimmed correctly, and others say the back of the solenoid on the inner fender is not grounded to the fender. I have yet to go out and try cleaning the back of the solenoid to fender for a better ground, but has anyone else had this issue? Yes, tapped the solenoid with hammer lightly stopped it and can drive on is only a temp fix for now.


I posted this on another "starter staying engaged" post. I will try the new motorcraft solenoid and make sure it's grounded to the mounting area of the fender and get back to you on this....

ThatNewWifeSmell

I took apart my solenoids that were failing. The metal contacts inside were fusing, or spot welding, themselves together. I bet the hammer taps are breaking the spot welds.