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Before I take off my alternator... AGAIN!!

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Old Jun 21, 2010 | 09:40 PM
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Default Before I take off my alternator... AGAIN!!

Alright, I replaced my stock alternator on my T/A back in April. As far as I know it was the factory unit with around 95,xxx miles. Well, that went fine until now... same problems, my battery charger that I have says that it's the alternator. This time however, the car never dies, my voltage will drop to about 11.58 and just stay around there. Friend thinks it may be a bad belt slipping on the pulley. This IS a REMANUFACTURED unit.. could this be something else or did I just get a shitty reman?
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Old Jun 22, 2010 | 01:54 AM
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Default Damn...

Mine is doin the same thing..it stays at around 11 but doesn't die...just put another replacement autozone alternator in and got the pigtail replaced on the wiring...I also just put a brand new Optima redtop battery in so that's all good. The shop says they checked all the wiring and everything is god so the think it is a bad PCM dropping the voltage. It would be expesive to get another computer to see if that's what it really is. Hope someone can help us both cuz this sucks!!
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Old Jun 22, 2010 | 05:21 AM
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well obviously you're drawing power from somewhere, whether it's electrical or mechanical like you mentioned, can always get a new pulley and belt and see if that helps as that may be the cheapest to start with. i'm taking you've checked all connections and wiring?
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Old Jun 22, 2010 | 08:54 AM
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is it throwing a code?

maybe the signal wire to the alt is "good" but not completely adequate to excite the charging
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Old Jun 22, 2010 | 12:22 PM
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Yeah, it's throwing all kinds of codes for the emissions that I deleted as well as the rear O2 sensors. Car could probably use a tune.. I'm about to take it off and head to autozone so i'll get back and let you know if it was just a shitty alternator
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Old Jun 22, 2010 | 01:35 PM
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I have read the horror stories of remanufactured alternators. I would guess this is your problem. Have you done any research on replacing with a AC Delco higher output truck alternator? I have heard some good things about this swap vs remanufactured stockers.
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Old Jun 22, 2010 | 03:26 PM
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very true about shitty remans, sometimes they work great other times they are bad out of the box

put one on my truck 2 years ago (less than 15,000 miles though) and it died last month
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Old Jul 15, 2010 | 03:00 AM
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In case anyone needs to look at this for future reference... It was a bad alternator, but autozone replaced it no questions asked. Gay I had to replace it, but it's all over now so now we all know... MAKE SURE YOU GET A WARRANTY!!
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https://ls1tech.com/forums/generatio...-failures.html
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Old Jul 15, 2010 | 01:15 PM
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Well, when was your belt and tensioner last changed? Check those too.
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Old Jul 15, 2010 | 05:43 PM
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+1 on this, it really helped me.
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