T O P I C R E V I E W
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slow5oh
Member # 12881
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posted
so I put some underdrive pullies on today and when I idle at a stop light my voltage drops a little. Not really concerned but I wanna know if there's anything I could do about it?
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sleeping stallion
Member # 8162
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posted
I think it's because u changed the alt pulley someone will correct me
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SLOW95GTS
Member # 10365
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posted
That's the side effects of under drive pullies, so those 3hp makes the alternator work harder. I'd put the stock alternator pulley back.
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LXjames
Member # 10791
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posted
Compare your old and new alt pulley I would only run crank an wp under drive and even that will lower your charging volts. Switch it back see if it helps an if you didn't change it at all it's probably a weak alternator that's been even more weakend by the now slow rotation of your accessories
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slow5oh
Member # 12881
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posted
quote: Originally posted by SLOW95GTS: That's the side effects of under drive pullies, so those 3hp makes the alternator work harder. I'd put the stock alternator pulley back.
oh okay, thanks guys
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slow5oh
Member # 12881
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posted
quote: Originally posted by LXjames: Compare your old and new alt pulley I would only run crank an wp under drive and even that will lower your charging volts. Switch it back see if it helps an if you didn't change it at all it's probably a weak alternator that's been even more weakend by the now slow rotation of your accessories
when I swapped the alternator pulley they were the exact same size(I think cause I have a 3G alternator) but my volts didn't drop so much to where I should worry about it, just wanted to see if it was normal
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LXjames
Member # 10791
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posted
It's normal also you could raise your idle speed just a hair so it won't flutter with all your lights radio on at idle
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SLOW95GTS
Member # 10365
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posted
It's normal not a big deal until you add beat or other things that work off you battery/alternator.
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slow5oh
Member # 12881
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posted
sounds good, thanks guys
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