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2002 Ford Ranger Question: battery light stays on, had the bat, alt, and starter checked. what else is it?

 

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cs21229, 3.0L V6, Jersey City, NJ, May 06, 2014, 10:56
 Rookie

battery light stays on all the time. Car runs fine, how can i get it to go out.

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  • Answer #1

    Zaloom's Auto Repair (1 Answer) , Staten Island, NY - (646) 663-5728
    zaloomsauto May 13, 2014, 10:24
     Enthusiast

    Hi There is a diode in the alternator that is like a check valve which if bad will send power back to the cluster and turn the battery light on. I suspect that is the problem.

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    cs21229, May 13, 2014, 10:40
     Rookie

    thank u. i think that was the problem. had the alternator changed since it was under warranty. Thanks again for ur response. chris

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