Question about 1986 Chevrolet Chevy

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Is this my alternator or my bealt is not tight enough or some thing else.

I notice last night while driving home that my head lights also the dashboard light was blinking when i was waiting for the traffic light to say go but when i am on the gas all the lights inside and out was o.k

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  • aquarianrose Dec 24, 2008

    I have a 2002 6 cylinder Mustang, The battery warning light blinks after driving the car a bit. The blinking goes away sometimes, and other times the warning light stays on for about 10 minutes. Battery meter looks good. Mechanic suggests changing the alternator. Is there a way to confirm that it is indeed the alternator that is the problem? thanks in advance.

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This definately sounds like a charging problem, first check the belt going to the alternator and make sure that it is tight. secondly turn off all of your accessories , ( lites, radio, ect. ) start the car then useing a volt meter test the reading on the altenator you should get a reading of at least 13.7 DC Volts as you observe the volts they should go up and down a little bit , fluxuate. this is normal as the altenator is designed to charge and dis-charge. If you are not sure where to test from on the altenator then you can always use the positive and negative battery cables but be sure to start the car then disconnect them so that you are getting the reading from the altenator. be very carefull not to let them touch anything metal. also before you start the car apply the emergency brake, not only for safety but this will stop the daytime running lites from coming on and drawing power, if your vehicle is outfitted with them.

Posted on Oct 11, 2008

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