Mechanics

WHY WONT ALTERNATOR CHARGE?

2002 Pontiac Trans Am • 75,000 miles

Engine light on, battery and alternator are new, found broken prong on pcm, replaced pcm, very frustrating, car still not charging, have checked fuses, does not seem to have an alternator fuse. Help!
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Joymarshall
October 6, 2012.




Does the battery warning light turn on when you turn the ignition switch to "run"? If it does, does it turn off when the engine is running? Do you have a digital voltmeter and know how to use it?

Caradiodoc
Oct 6, 2012.
Engine Light on means a fault has been detected by the engine management system. Did you check for trouble codes?

Why do you think it is the alternator that is not charging?
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KHLow2008
Oct 6, 2012.
I very much appreciate your quick response, but as I was typing my question my husband found a broken wire going to the alternator and repaired it which fixed my charging problem. Again, thank you

Tiny
Joymarshall
Oct 6, 2012.
You're welcome. Glad to know the problem has been fixed.

KHLow2008
Oct 6, 2012.

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