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FYI voltage regulator problems 700 89

posted by  someone claiming to be Zach on  Thu Jul 26 20:26 CST 2001 [RELATED]



Bad voltage regulator symptoms on my 740:

-pulsating lights (not necessarily rpm-sensitive)

-the car lunges and jerks, especially when in gear and coasting (similar to the feeling of disengaging the clutch too quickly)

-intermittent engine spit and sputter at a specific rpm in any gear including neutral (mine was at 1900 rpms)

It took me a while to figure this one out. I posted the symptoms here twice to no avail. Of course I figured the voltage regulator might need to be replaced because of the pulsing lights, but no one thought the problems were related to the violent sputtering I was getting. Apparently, the regulator was having difficulty coping with the additional power produced from a faster moving alternator, which was in turn messing up the efi. The brushes were in good shape, but the regulator was an aftermarket brand, so it could be an isolated problem.

Anyway, I thought I'd pass on the info.





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