Quote:
Originally Posted by 00GTP4ME
I bought a 110 amp alternator from AutoZone last year to replace the factory alternator that went out and haven't had any issues until this winter. Sometimes (usually in the morning when it's really cold) the voltmeter will only show that I'm at 12V (sometimes less) when I'm idling (after the engine is warm). Then when I start driving the volts go up as the RPM's go up. Other mornings, the volt gauge says 14V+ and the alt seems to be putting out a ton.
I do have a stereo system with subs, 1.6 farad capacitor, etc, and sometimes the volts output seems affected by having the stereo on and sometimes it seems completely unaffected.
This issue has caused me to have to jump the car sometimes (the battery acts as if it's dead), but what's strange is that sometimes it starts right up without hesitating.
It seems like the alternator is on it's way out, but could anything else be causing this? The last time I had to replace the alternator, it would just never go above 12V as if I didn't even have an alternator. This is a little weirder. Could I have a weak alternator bearing or something?
I still have the same duralast gold battery that was in the car when I purchased it so at minimum the battery is 5 years old. Could a floating short in the battery be causing this?
Thanks for any help....
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i got a 83 buick that's over chargeing and it's the battery that's bad not good on the alt. and like he sais duralast is best battery i've bought and still will buy duralast if battery go's bad.