Thread: Mysterious starting issue

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  1. #1 Mysterious starting issue 
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    Hi: 1999 GP, original owner.
    My wife called and said the car wouldn't start. It was completely dead, no accessories, no ignition. The key could not be removed from the lock.

    I pulled out the jumper cables, but as I was about to attach the black clamp to the chassis, I jiggled one of the cable harnesses under the fuse panel next to the battery and I heard the door chime!

    I asked her to try and start the car and it started right up!

    Jiggled the cable some more and the car wouldn't start. After a while and more jiggling, it started again.

    Obviously a loose wire behind the fuse block ... but which one? The ignition relay and the main ignition fuse are on the RHS of the block, second sub-block from the bottom. Does anyone have a wiring diagram that shows which wire could be causing this type of symptom - the key is in the on position, but the car behaves like it's off???

    Thanks.
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  2. #2 Re: Mysterious starting issue 
    GrandPrix Junkie idrivejunk's Avatar
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    Had that happen to me one day in the GT, it was loose big red wire under the nut at the + jumpstart terminal on top of the "electrical center". Like you, I wiggled stuff then aha!
    All Grand Prix, all the time. 69 Model J, 99 GT & GTP coupes. All junk, haha.
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