Originally posted by horseydug:
Well easiest way requires voltmeter across battery which should show about 12.5 volts with engine off, and about 13.5-14 with engine running and alternator working properly.
Alternators are sometimes replaced for noisey bearings even tho' they are OK electrically.
What reason did mechanic give when he suggested replacement?
Thanks
He said battery was showing only 9 volts.
