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rbates rbates is offline
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Join Date: Jan 2004
Posts: 1
930 engine misfire

I have a 1989 930 that I've had for 2 years. It has been perfect up to a few weeks ago. Since then, on 3 occasions, it will run rough with "wild swings" of the tach. At a constant speed (mph), the tach will indicate 2X the expected rpm, and the engine runs as if on 3 cylinders. I drive home, shut it off, re-start, it runs perfectly again! Then runs perfectly the next half dozen times, then repeats the above.

Problems the DME? Electronic ignition? Coil?

All ideas appreciated!

Thanks. Bob
Old 01-31-2004, 04:53 PM
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