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Alternator bearing help!

This is a discussion on Alternator bearing help! within the External Engine forums, part of the LSx Technical Help Section category; Ok. My 99 WS6 has torn through 3 alternators. It just chews through the bearings. My OE died at like ...

  1. #1
    Junior Member
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    Pontiac WS6 Trans Am

    Alternator bearing help!

    Ok. My 99 WS6 has torn through 3 alternators. It just chews through the bearings. My OE died at like 126k. I bought a AutoZone reman. 2 weeks later, bearings are gone. Got another one under lifetime warrenty. Bearings were blown as soon as I turned the car on. So I got pissed and bought a BOSS HO 160(amp?) alternator. It has worked for 2 months. Now the bearings in it are shot. It's squeeking like your moms loose bed frame.

    What would cause a LS1 to chew through alternator bearings. Because I have replaced everything ( idler, tensioner and pully, belt, water pump, alternator a few times ) so I don't know what is going on. Please help!

  2. #2
    Member Jon7I2's Avatar
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    Navy Blue Metallic
    99 Formula M6

    I dont know the answer to ur question, but i would sure like to. I have a similar problem w/ my stock altenator. I'm sure someone else will come up w/ an answer to help us both out.

  3. #3
    Senior Member mrr23's Avatar
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    dark bowling green
    2000 corvette

    have you looked at the bracket to see if it is cracked?

  4. #4
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    Pontiac WS6 Trans Am

    Nah, the bracket is brand new. I seriously have replaced everything on the the front of that engine minus the ps pump and the crank pulley. :\

  5. #5
    2004 HEAD/CAM CTS-V 9t8z28's Avatar
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    2004 CTS-V

    How tight is the tensioner on your car and what kind of tensioner?

  6. #6
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    Pontiac WS6 Trans Am

    It's a brand new stock tensioner. Got it a month and a half ago. It's pretty tight.

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