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charging system failure

L

luckyg817

New member
Hey guys so my 04 gp started showing charging system failure last night so I started checking it out today and my voltage with the car off is 12.13 and when I turn it on, it drops to 11.73. Obviously that's why it's showing the message but my question is why? I am running one 12 but nothing big. I even turned off the stereo while the car was on to see if maybe it was the amp making it drop up and down but it didn't make a difference. My battery is however about 2-3 or 4 years old. It's a red top optima battery. Is it time for a new battery? Maybe alternator?
 


Turned out to be alt. Took it to get tested, failed twice so I swapped it out in the parking lot. Problem fixed $200 later.
 


sounds good now.

next time look up a local alt and starter re builder, i got mine rebuilt for 80 bucks. same day service, and its warrantied by a local co.
 
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