Question about 1991 Buick Park Avenue

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Voltage problem on 91 Buick Park Avenue

I had an alternator loose its bearing pack. I replaced the alternator but now the voltage meter on the dash is only reading 10 volts. I had the alternator checked and it is good. The battery is brand new. I get 12 volts off of the post on the back of the alternator and ground. Is there a relay that could have failed that controls current to the computer or control center that the volt meter reads from?

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Sounds like the voltage regulator is not working, at the terminals you tested voltage should be above 13.6,also make sure you have good grounds,these should be tested with an ohm meter,meter should read zero,no resistance, if you need more help get back to me and we'll do some other tests,please rate my fix as i strive to be the best

Posted on May 13, 2009

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