1994 Mazda B2300 Q&A

1994 Mazda B2300 Question: faulty alternator?

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? -
Answer 1
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. -
Answer 2
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 -