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  • Possible alternator problem

    I just got my A/C fixed today, pretty much the entire system was replaced, and it works great. The only thing that I am concerned about is my alternator. With the A/C off I am getting around 14v, with the a/c on it drops to about 12v and there is a loss of power from the car. Is this drop normal? Thanks for the help.

  • #2
    Re: Possible alternator problem

    well when your ac is on your using more power. you could see minor things such as dimming of the lights and drops in rpms
    WAWA-A-HOLIC

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    • #3
      Re: Possible alternator problem

      sounds normal to me

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      • #4
        Re: Possible alternator problem

        yeah, when i lower my windows my lights dim and my battery gauge drops down a little bit, so id say its just a similar thing going on. tomorrow ill flip my A/C on and see if it drops and stays lower like yours. id say its normal though. I just replaced my alternator too so i know mines good.

        1999 Firebird Y87/W68

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        • #5
          Re: Possible alternator problem

          okay, thanks for the help. Sounds like its pretty normal then. I was also worried before because I have a sound system in my car running an amp at 1000w rms, I just won't crank it up with the a/c on.

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