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1992 Chevrolet 2500 Pickup

Question: truck looses power once you turn headlights on, whats wrong?

Question

Dee1962, 5.7L V8, Burfordville, MO, January 06, 2012, 21:26
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 Rookie

truck runs good until you turn on the lights. It starts loosing power and dies within minutes. turn off the lights, starts up just like normal.

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, January 06, 2012, 22:14
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     Master

    Check battery connections are clean tight and secure, check the alternator is charging properly, at idle with a voltmeter across the battery the voltage should be approx 14.7 volts if the alternator is charging correctly. A voltage drop or bad electrical connection has to be causing the problem.

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  • Answer #2

    csubak30 January 06, 2012, 22:32
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     Master

    agree with patrick voltage drop is most likely from alternator problem.

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