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5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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Old 08-27-2012, 02:23 AM   #1 (permalink)
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1989 535i running rough

Help ?? 1989 535i
Problem. when started idles for a few seconds,then starts running rough.put foot on accelerator doent seem to have any power. missing running rough smell of rich fuel from Exhaust.Any advise appreciated Thanks

Last edited by zabe 1; 08-27-2012 at 02:28 AM. Reason: no title
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Old 11-09-2012, 07:11 PM   #2 (permalink)
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Bump. Have the same problem with my 89 535i.

OP, did you fix the problem?


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Old 05-21-2013, 06:26 PM   #3 (permalink)
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Originally Posted by zabe 1 View Post
Help ?? 1989 535i
Problem. when started idles for a few seconds,then starts running rough.put foot on accelerator doent seem to have any power. missing running rough smell of rich fuel from Exhaust.Any advise appreciated Thanks
Turn key to on, Floor accelerator 5 times within 5 seconds, count the "check engine" light flashes. It will flash out the code that the on-board computer has in it, and possibly the problem. With my 535i - Mass airflow sensor. You'll have to search and look up the meaning of the codes. For example: 1 flash, short pause, 4 flashes, short pause, 3 flashes, short pause, 1 flash, LONG pause would be trouble code; 1431 (not an actual code, by the way...) Good luck
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Old 07-16-2013, 06:07 PM   #4 (permalink)
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Changed spark plugs recently? Check valve adjustments?
M30 engines are awesome. My mechanic told me it's bullet-proof. I believe it.
Good luck, it seems like an easy fix. Be friends with an independent BMW mechanic in
your area.
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Old 08-05-2013, 05:13 PM   #5 (permalink)
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how long has it been since the spark plug wires were changed? Old wires will produce a lot of strange behavior on that motor.
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