Alternator

Asked by Chevymalibu15 May 25, 2018 at 04:11 PM about the 2015 Chevrolet Malibu LS FWD

Question type: Maintenance & Repair

When getting alternator tested it says bad
regulator but when i take thw alternator out of my
car and get tested in orileys they say it regulator is
good

1 Answer

25,610

If the voltage is 13.5 or more with the engine running, there is a bad connection in the alternator. A symptom usually is that the battery slowly goes dead, however, the ammeter sometimes shows a positive charge.This is usually a bad diode in the alternator and less often a bad regulator. If this is the case, the alternator needs to be replaced.

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