Electrical gremlin exorcized

[Woj]

Wow Bill, that was one buried gremlin. Thanks for sharing. A buddy has a similar problem with his 64 GTO. I will pass this along. Thanks. Phil

[A12pilot]

That's some good sleuthing, Bill. Nice work!

Cheers
Dave

[Too Many Projects]

Yep, that's a new one for me. I've chased, and repaired, a lot of electrical issues in my years of repair and restoration, but never a defective solenoid.

In the seventies, if an intermittent starter engagement issue came up, I would disassemble the solenoids, carefully file the burned contacts, sand smooth and reassemble, all to save about $10 for a genuine GM replacement ... Apparently, I never put them together wrong.

[67since67]

Originally Posted by Woj

Wow Bill, that was one buried gremlin. Thanks for sharing. A buddy has a similar problem with his 64 GTO. I will pass this along. Thanks. Phil

Phil, have your friend place a hand on the engine harness immediately after it acts up. At one point I found the harness slightly warm but thought likely due to underhood heat. That may have been a clue??

Also, for a while I was driving around with a test light taped to a wiper arm and connected to the positive side of the coil. When it flashed off for a moment I knew it was either ignition voltage loss or grounding of the ignition circuit. But which and where??