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Car won't stay running - help!

This is a discussion on Car won't stay running - help! within the General Help forums, part of the LSx Technical Help Section category; I am having trouble with my car starting and staying started. It will fire-up just fine, then run for 10 ...

  1. #1
    Member 408WS6's Avatar
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    1998 Pontiac TA WS6

    Car won't stay running - help!

    I am having trouble with my car starting and staying started. It will fire-up just fine, then run for 10 seconds or so, then the tach and speedometer needles will start going crazy, then die. My battery needs recharging everytime I do this. Is this a bad alternator? I would have thought it would have run longer than just a few seconds on a bad alternator.

    I had the center console out and was installing a shifter before this happened. I thought maybe I misplaced a wire, but I checked and all wires and everything appeared ok.

    An electrical problem no doubt, but the only thing I can really come up with is the alternator is bad.


    Any ideas? Help!!!!

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    Member SSpdDmon's Avatar
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    Check all grounds. If a ground wire is loose or corroded, it'll cause those kinds of issues.

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

    then the tach and speedometer needles will start going crazy

    Classic sign of a failing alternator. The gauges go crazy because it's throwing a ton of noise into the electrical system.

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    Member 408WS6's Avatar
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    I will try all of the above. Thanks!

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    Feels so good BadBlueBird*'s Avatar
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    Quote Originally Posted by Steve Crowe View Post
    Classic sign of a failing alternator. The gauges go crazy because it's throwing a ton of noise into the electrical system.
    first thing I thought of as well

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    Member 408WS6's Avatar
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    Hey guys, I found the problem. It was one of the wires going to the O2 sensor and it was grounding itself out on the header. I didn't get my wiring harness tucked in very well when I change out my convertor. Thats what I get for being sloppy I guess. Works great now. Thanks for all the help.


  7. #7
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    00 LS1, WS6, V8 Gremlin
    96 & 98 GTPs, 64 'Cuda

    One of those problems you're actually glad to find - much cheaper to fix. :-)

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