Quote:
Originally Posted by Stl-986
I think you are right. One of the pins is 12v, another is ground from the dme & the other is engine ground (gp12).
This is an area that is not my strongest. I do decent, but not great.
Here is the rub with all this though. the misfires are not constant, that are sporadic. sometimes get a lot of them, sometimes it's 30+ seconds in between misfires
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I'm not great here either.
It could very well be a break in the wire with the broken ends close enough together. Somtimes it gets continuity, sometimes it doesn't. Temperature and engine vibrations would contribute to the problem. So would a short between two wires rubbing against each other in the harness. The latter is harder to diagnose because a continuity test would still show continuity. If you're lucky in that case you'd find voltage on a wire that's not supposed to have it, then that would indicate a short somewhere. Besides that, you'd have to cut the harness open and check each wire for a break in the jacket.
I've been following this thread and I empathize with you. Electrical gremlins are a PITA to solve. Hopefully at worst you just have a break in the wire and not a short.