I have an 89 325i that has recently begun having battery issues.
Sometimes when I step on the brakes, the radio cuts out for a brief
moment and then comes back on. Today, the battery light remained
illuminated until I was a few miles down the road and the radio issue
has become far more frequent. Also, I got the 1231 motronic code (low
voltage). I know replacing the entire alternator will fix this but
what are the chances that it's just the brushes/voltage regulator
I can't get a replacement until Monday... In the meantime, I have a
similiar part 1 197 311022 (the suspected bad part is a 1 197 311021)
but am not sure if they are compatible. The only visible difference is
that there is a component, possibly a diode, across the terminals of
the regulator. Any ideas???
Follow up... As the specs for the two parts were the same, I figured
what the heck. I put the other regulator in and it works just fine.
The original part failed because the brushes were worn away to
nothing. There was no spring tension left (due to the brush wear) to
hold the brush against the stator. New (used) part fixed the
problem... On to the next project, Zender body kit installation amd
Hadn't thought of that. Putting a meter on it didn't tell me much.
Noise suppression would be nice thought. The voltage regulator came
out of a Volvo 740 Turbo. Wish it still had the turbo....
On Sat, 03 Feb 2007 09:17:26 +0000 (GMT), "Dave Plowman (News)"
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