1992 Pontiac Firebird My battery gauge is bouncing for unkn

1992 PONTIAC FIREBIRD
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RIVELLATION
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Electrical problem
1992 Pontiac Firebird 6 cyl Two Wheel Drive Automatic 68 k miles

When I am driving my battery gauge is bouncing from 13 to 17.5A and I have no clue what can be the problem. When the gauge is bouncing all the electrical device such as the head light and the fans are having a boost.
Apr 8, 2009 at 12:41 PM
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TEAG
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I had this problem before. It turned out to be a bad alternator. You should take the alternator to a parts store and have it checked. Good luck :)
Apr 10, 2009 at 1:46 PM