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1994 Mazda B2300 Question: faulty alternator?

 

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blastfan, 2.3L 4 Cylinder, Glen Burnie, MD, December 22, 2011, 19:15
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just got rebuilt alternator installed, notice on charging gauge on dash, constantly charging, but when i turn on heater, lights, turn signals, etc the needle jumps back to discharge briefly, or if i slow down engine rapidly, it also jumps back to discharge until engine is reved up. is alternator faulty? or possibly distribution problem?

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    December 22, 2011, 19:34
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     Master

    Let me guess, a advance or autozone alternator. Try another alternator. This time by a new one not rebuilt. I'm sure the one you purchased is lifetime warranty but how many times do you want to replace it in your lifetime.

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  • Answer #2

    December 22, 2011, 19:53
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     Master

    it may also be one with a pulley that is to big not allowing the alternator to charge at low engine speed. i would let a shop check it for you to verify.

    Roy

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