Question about 2001 Chevrolet Malibu

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I have a 1999 chevy malibu and it is over charging. I tryed a new alternator and that did not fix the problem. I tryed a new battery and that did not work either. so what do i try next

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Assuming that diagnosis of overcharging is correct, one has to be careful with replacing the regulator.
It is very easy to get a wrong regulator, older styles that have often no indication or partnumbers won't work 'cause this Malibu's regulator does some communication with the onboard computer. D748 or D749 are the ones that will work.
With this type of alternator only removing the plastic cover is needed to get access to regulator (black unit in which plug connects)

Posted on Sep 04, 2008

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What do you mean overcharging? Put a volt meter on battery...It should be about 14.5 volts. Since you already replaced the regulator (inside the alternator) The only thing left is that the new regulator is bad. Easy to paperclip through hole in back to hold brushes until fully assembled then remove.

Posted on Aug 21, 2008

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