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Thread: battery light turns on when reving high

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    D-Fence-Less Sport1.3's Avatar
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    Check your Alt Ground. If nothing, sounds like its time for a new Alternator
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    Proud to be Retrosexual Jaimecbr900's Avatar
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    That's usually a bad diode in the alternator.

    Go to any auto parts store like Autozone or Pep Boys and they will check it for you for free.

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    Senior Member | IA Veteran GSRtegŪ's Avatar
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    Sounds like a good idea. ^^^^

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    Quote Originally Posted by Jaimecbr900
    That's usually a bad diode in the alternator.

    Go to any auto parts store like Autozone or Pep Boys and they will check it for you for free.
    yea well i got the battery tested at autozone today and it is fine, to get the alternator tested dont i have to take it out of the car?

    also new info, when it was dark i found out that when the battery light turns on the all of the lights get brighter, i will check the ground first thing tomorrow morning.
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    Proud to be Retrosexual Jaimecbr900's Avatar
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    Quote Originally Posted by GermanMuscle
    yea well i got the battery tested at autozone today and it is fine, to get the alternator tested dont i have to take it out of the car?

    also new info, when it was dark i found out that when the battery light turns on the all of the lights get brighter, i will check the ground first thing tomorrow morning.
    #1. You do NOT have to take the alternator out to test it. If they told you that at Autozone, RUN to a different place to get it tested IN the car.

    #2. BEFORE getting it tested and to avoid looking like a true newb , check to be sure that the belt is tightened and/or not falling apart. Check the grounding cable and the plug to be sure neither is loose or off.

    #3. What part of town are you in? If you are in Gwinnett, I can send you to a shop to get it all done if need be. They are in my sig.

    #4. You should do this ASAP. Usually alternator problems only get worse and they do so quickly. I wouldn't drag it out unless I love pushing cars down the road.

    Good luck.

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