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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix. is the premier BMW Forum on the internet. Registered Users do not see the above ads.
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Old 11-07-2011, 12:12 AM   #1 (permalink)
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Lights pulse with engine rpms

When I have the lights on they pulse with the engine rpms. the headlights, interior lights and the lights on the gauge. I don't know what's wrong it's done this since I have owned the car. Any suggestions?
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Old 11-07-2011, 03:07 PM   #2 (permalink)
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Alternator, or failing battery?

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Old 11-10-2011, 12:55 PM   #3 (permalink)
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Mine did the same thing. My alternator was going out, so the battery was not getting fully charged, and there wasn't enough electricity to power everything.

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