| Alternator Failure [message #345077] |
Wed, 10 July 2019 07:31  |
Bruce Hart
Messages: 1501
Registered: October 2011
Location: La Grange, Wyoming
Karma:
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On the final leg of a recent trip the alternator was behaving very strange. Watching my volt meter the volts would go to zero and bounce up past 16 volts when the RPMs were under 3000. Above 3000rpm the volt meter would just peg out high. Stopped in NAPA store in Billings and got new remanufactured alternator. 15 miles down the road and the alternator started behaving the same way, bouncing back and forth from low volts to high volts. Disconnected center lug of isolator and ran generator until we got home. Tested new exchanged alternator and it was bad. Installed new remanufactured alternator and only getting 1/2 volt. Checked continuity of wires, getting 11.5 volts to alternator (Battery discharged), APC ok, Isolator checked out ok, and replaced end connectors. Had the newest alternator tested and it was ok. Cannot figure out why I am only getting 1/2 volt out of alternator. Any ideas. I am going to put another alternator that I know is good and see if that might work.
In the last month and a half this is the THIRD remanufactured alternator that I have replaced. According to the counter person at NAPA I can only get a 63 amp NEW alternator for the GMC.
Sending another alternator to local rebuilder for testing and repair.
G-genetically
M-modified
C-Chevy
My brother told me this.
Bruce Hart
1976 Palm Beach
1977 28' Kingsley
La Grange, Wyoming
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