Very carefully check all the connections between the alternator and the VR. I
had the same problem, turned out to be a bad connector in the sense line from
the alternator to the VR. Caused the VR to think the alternator was putting
out zero volts and turned it wide open. Make sure they are all clean and
tight, it took me quite a while to find the problem.
keith williams
> List,
>
> My battery is being overcharged. It bubbles and hisses at me when I shut off
> the engine and my gauge reads 30+ while driving at RPM's above 1200. Is this
> a problem with the voltage regulator or the alternator, or is it possibly
> both? I changed the V-regulator and the problem almost went away but I can
> tell by my in dash gauge that there is still a background problem. The gauge
> reads 30+ for a short time when I first start the car, then it comes down to
> just above center zero. Is it time for a new alternator? If so, what causes
> the supercharging alternator? TIA.
>
> Craig Odell
> 68 2000
> 67 1600 (Brand new family member)
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