Question about 1997 Pontiac Grand Am

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Battery lite stays on when engine is running

Alternator was checked when bought also rechecked at a auto electric shop just yesterday ,battery checks strong and fuses have been checked . lite came on when old alt. went bad and has not went out since putting the new one on. Once in a while it will go out for about 5-8 seconds after starting and then comes on again and stays on. I have checked wiring to the PCM ,but don't know how to check the microprocesser behind the dash panel thanks, ken

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If you have checked the battery, alternater, fuses and relays, it could be a faulty earth. Alternater may be faulty, there is a very good chance your fan belt may need tightening, your fan belt should not be too slack as if it was slack, it would not charge the battery properly and thus cause the battery light to stay on, if you push down on the belt it should move a little, but hardly much, if it is slack you may also get a squeal especially in wet weather, I would reccomend that you replace the fan belt. This is not expensive especially if you do the job yourself.

Posted on Mar 11, 2009

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