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If the battery is more than 3 or so years old (and the car is up in the rust belt), it's suspect.
Other common things that contribute to the condition are:
- Voltage regulator brushes worn down below the service limit. Does the battery light glow faintly when the engine is turning low RPMs? That's a dead giveaway.
Do a search for alternator brushes to get some diagnostic and replacement info.
- Frayed ground wire which runs from the alternator case to the block. When it frays down to a few strands (usually where you can't see it) the alternator isn't able to push enough current through the wire to compensate for large usage like headlights, fan, windshield wipers, etc.
Do a search for "Ground wire" and you'll see how to do diagnostics.
Posts in this Thread:
- Battery Failing, pcgeek, Mon, 25 Sep 2006 06:42:46
- Re: Battery Failing, GaryJ, Mon, 25 Sep 2006 09:35:13
- I killed one by leaving the trunk light on, Caarl
, Mon, 25 Sep 2006 08:40:01 - Re: Battery Failing, nuysSAAB
, Mon, 25 Sep 2006 06:52:06- Yep, it was the fan, pcgeek, Fri, 29 Sep 2006 06:11:25
- Re: Battery Failing, nuysSAAB
, Mon, 25 Sep 2006 06:56:19- Also -, RS
, Mon, 25 Sep 2006 07:09:32 <-- Viewing This Message
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