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mark houghton mark houghton is online now
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Join Date: Jul 2008
Location: Central Washington State
Posts: 3,782
Nothing excites me more than an excited alternator! How seductive is that?

I think you guys have hit the nail on the head re: the diode. I had never had issues with mine, but did replace the voltage regulator last spring. Not a huge chore, but solved my charging issues. Just another funky German engineering thing....a diode up at the idiot light. How idiotic is that?

If everything is working correctly, even at idle (once the alternator is initially excited by a blip on the throttle) you should be seeing low13 volts at the battery.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 02-04-2014, 12:03 PM
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