electrical problems
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New User
Joined: Jun 2013
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electrical problems
I have a 76 f150 with the 390 motor, over the weekend it died on me on my way home. It just lost all power to the motor. When I tried starting it again all it did was turn over. After the motor is cooled off it will start, but once it gets to full operating temp it will stall out. I have changed the ignition module, the coil, the voltage regulator, the ignition switch, and the starter relay and so far none of that has done the trick. After the motor dies I pulled off the center wire in the distributor that goes to the coil and hold it close to the power steering bracket and try turning the motor over and the only time it sparks is when I let off the key. Its driving me crazy and im out of ideas so if anyone has some advise for me it will be greatly appreciated!
Elder User
Joined: Mar 2013
Posts: 559
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From: In Hastings Delton area
still sounds like a bad ignition module or bad stator pickup assembly. I would check connections and the wiring going to ignition module.I have seen new ignition module that were no good
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Joined: Jun 2013
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First off thanks for your advise. I took the alternator back to where I bought it and they tested it and it came back bad, so I got a new one. I put it in and started the truck. But again when the truck warmed up it stalled. I started looking under the hood to see if I could find any wires that didn't look right and I put my hand on the coil and it was very hot to were if you kept your hand on it for more than a second it would burn. I think this may be my problem but what would cause the coil to heat up like that?
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
I've seen a lot of money thrown at the problem, but very little actual troubleshooting. You've indicated you do not have spark during the failure mode. The next time this happens, disconnect the distributor, and measure the resistance between the ORANGE and PURPLE wires coming from the distributor. Report your results.
To be clear, your next post must consist of a resistance measurement, or a request for help in using a multimeter.
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