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View Full Version : Alternator hum



Burlsube
09-09-2010, 07:52 PM
I have been having some issues with my charging system. I think the alternator is shot. The battery is getting a constant 12.5 volts, but under any sort of load the battery is dipping to 11.5 ish. Sounds pretty textbook...

I also noticed that there is a hum coming from the alternator even when the car is off. Any ideas? Does any one respin or refurb these in the Boston area?