Question about 2001 Oldsmobile Intrigue

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Headlights dim while driving. Any real solution since no one seems to think it's a problem??

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  • Zaraki Nov 09, 2010

    Headlights that dim down or run yellow are usually caused by a low alternator output, and usually that happens after someone has not properly jump started another vehicle, or has dis-connected a battery post while the engine was running to check if the alternator was working, the problem with that is when the battery post is dis-connected while the engine is running the amperage will bakup through the diodes in the alternator and damage the diodes and compromise the charging ability of the alternator, and the alternator will soon completely fail to charge the battery because the diodes will continue to fail one at a time until the alternator will no longer charge the battery at all. Also, check for any loose ground wires at or around the battery and around the headlights. With the engine at idle and all accessories on and running, a volt meter connected to the battery should read between 14 and 16 volts (14.5 volts optimal) if the charging system is functioning correctly. Any voltage reading below 14 volts and the battery will not be receiving a proper charge, and the alternator is not able to keep up with the electric demand from the vehicle.

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Check output alternator voltage at battery, with lights and a/c on, should have no less then 13 volts, if that checks good, check for bad ground at headlights, or find ground wire at headlight elec. plug (back of headlight), add wire to ground wire and bolt it to body ground.

Posted on Nov 09, 2010

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