My alternator light comes on when I accelerate

Asked by oitsusan Aug 11, 2011 at 10:33 PM about the 1989 Volkswagen Vanagon

Question type: Maintenance & Repair

I have checked my battery and my alternator. Both are getting about 14.5 volts. I believe they are OK. The alternator light on the instrument panel comes on when I accelerate. Any ideas?

4 Answers
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John answered 13 years ago

It's a good possibility that the belt is slipping during acceleration, when you check the voltages the engine is probably at idle and there is very little strain on the drive belt. Check the belt condition (glazing, cracks, etc.) also check the pulleys for excessive wear and of course the belt has to be properly tensioned. Good luck with it!!

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MY90CARAT answered 13 years ago

Check all your ground wires in engine compartment.Wires tend to rust even they look Ok from outside.

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