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coil pack arcing problem

This is a discussion on coil pack arcing problem within the General Help forums, part of the LSx Technical Help Section category; Hey guys, I'm kind of new here, I used to post a long time ago and I'm just now coming ...

  1. #1
    Junior Member
    Join Date
    Jul 2007
    Location
    Michigan
    Posts
    1

    White
    1999 Pontiac Trans Am

    Angry coil pack arcing problem

    Hey guys,

    I'm kind of new here, I used to post a long time ago and I'm just now coming back. I've got a 30th Anniversary Trans Am, and I've suddenly developed a problem. I was at a fairly big annual car cruise in port huron, michigan, and the car was running great. All of a sudden the car started running really rough, misfiring, and I pulled over to inspect and found that one plug wire had come off the coil pack. After getting it back on the coil pack and restarting I found that there were sparks arcing from pretty much every coil pack on that side of the engine going directly to the valve cover or the coil pack bracket. It looks very random and seems to be coming from the wire connections as the wire loom hooks into each coil pack. All my bolts appear to be tight, what am I missing? Is there a ground cable that could have come unhooked or something? The driver side isn't doing this. The car ran horribly after that and the service engine light came on.

    Thanks in advance for anyone who may know what to look for.

  2. #2
    Member
    Join Date
    Oct 2006
    Location
    Oklahoma City
    Posts
    282

    00 LS1, WS6, V8 Gremlin
    96 & 98 GTPs, 64 'Cuda

    Chances are it's only one of the coil packs and it hasn't damaged the other ones.

    Get a strong flashlight, pull the wires one at a time and look the coils over very carefully for hairline cracks, whitish deposits &/or burned looking places.

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