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2000 Pontiac Bonneville battery going crazy

Tiny
FONZIRAMOS2007
  • MEMBER
  • 2000 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 110,000 MILES
There are times when my battery goes up and down mostly when I turn on the air condition also when I turn the battery kind of dies down then back up. Also when ever I put the windows down or up the battery and the lights dim then back up. I also have a aftermarket radio with subwoofers and an amp. Should I change out the battery to a yellow top or is it something else
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Monday, May 17th, 2010 AT 6:59 PM

1 Reply

Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
When you first turn on the air or operate your windows your voltage will go down on the gauge then back up thats normal. But to be on the safe side make sure your battery cables are clean and tight and have your battery and alternator tested at the parts store. Also are u running some hugh amp?Let me know what you find.
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Monday, May 17th, 2010 AT 7:12 PM

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