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Thread: new here but have ALT issue

  1. #1

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    new here but have ALT issue

    Ikeep frying alternators on my 88 Ram 50, I upgraded to a starion alternator after the stock alt fried, but these keep frying (goin on the 3rd one now) I upgraded the gauge of the wire to 4 gauge from the alt to the battery and upgraded my ground wire. What else can cause this issue. Im at a loss at this point

  2. #2

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    forgot to add the truck has air ride, and has a small system 10in sub and 600 watt amp. I check all that wiring and cant find a problem there

  3. #3



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    Is the battery shorting internally? A stock alternator is only 37 AMP. To burn them up somthing needs to be putting a large draw on them for a long time.
    What are the voltages at idle, at 1200 RPM. Also what is the voltage at the alternator VS the battery. Then check the voltage after running for 7 minutes. The voltage should come up. As the amp draw goes down the voltage comes up. And vise versa.
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  4. #4

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    Quote Originally Posted by camoit View Post
    Is the battery shorting internally? A stock alternator is only 37 AMP. To burn them up somthing needs to be putting a large draw on them for a long time.
    What are the voltages at idle, at 1200 RPM. Also what is the voltage at the alternator VS the battery. Then check the voltage after running for 7 minutes. The voltage should come up. As the amp draw goes down the voltage comes up. And vise versa.

    i actually figured out that it is the battery causing the issue

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