Voltage Fluctuations
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Voltage Fluctuations While driving the Impala on a road trip (2006 GTO LS2 drivetrain)......I noticed that after a couple days of driving, the Voltmeter would fluctuate between 12 and 14 volts..........it would stay at 12 Volts for quite a while then move up to 14...........if I stopped for a while then it would stay at 14 Volts for a while before dropping again.......What's going on here ????
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If it was at 12 volts, that means it wasn't charging at all. I'd have it tested and probably needs a new one.
Also, do you have the S terminal on the alternator wired?
Andrew
Also, do you have the S terminal on the alternator wired?
Andrew
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Worked perfectly for 5 years...........But......That was then and this is now.......Andrew.....Stock Harness modified by Speartech 5 years ago.........Ordered a New Alternator............
Thanks
Ken
Thanks
Ken
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This car stuff is hard........LOL.....Bought a new Alternator.......while taking the old one off, and after removing the nut from the battery charge wire , I noticed that the inner nut that keeps the stud compressed and tightened against the plastic case was about three threads from being tightened as it should be........so......It's possible that everything was tightened between the nuts.........the stud was allowed to not be tightened as designed...............Put the new alternator on......started it up and Bingo .......14 Volts with no fluctuations..........Like I said, This car stuff is hard........LOL
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This car stuff is hard........LOL.....Bought a new Alternator.......while taking the old one off, and after removing the nut from the battery charge wire , I noticed that the inner nut that keeps the stud compressed and tightened against the plastic case was about three threads from being tightened as it should be........so......It's possible that everything was tightened between the nuts.........the stud was allowed to not be tightened as designed...............Put the new alternator on......started it up and Bingo .......14 Volts with no fluctuations..........Like I said, This car stuff is hard........LOL
After thinking about what I posted ................Disregard.......Doesn't make any sense.........Just looking for any reason.....LOL
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Took the car out yesterday with the new GM alternator (old one was a new Chinese unit) and put some miles on it......Voltmeter stayed right at 14 Volts all day........never fluctuated once...........Not gonna try and figure it out ......