1993 525i Vibration/missfire - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 05-10-2009, 10:22 AM
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1993 525i Vibration/missfire

Hi.
My e34 which has only 86000 miles on it has had this fault since I bought it a couple of months ago. It has a vibration in the engine, this happens between 2000 and 2500 revs. When I got the car it wasnt firing on pot number 5 so I have changed the coil and the wiring to that pot and changed the injectors. Its running a lot better than it did when I bought it but I just cant sort out the vibration/missfire. any ideas?
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#2 (permalink) Old 05-12-2009, 12:27 AM
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check your engine mounts they are know to wear.
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#3 (permalink) Old 05-12-2009, 03:18 AM
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Mass Air flow meter ?

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#4 (permalink) Old 05-12-2009, 11:26 AM
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Thanks chaps, I will check all these things and let you know the outcome.
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#5 (permalink) Old 05-12-2009, 01:06 PM
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Ah ha Timing !!

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#6 (permalink) Old 05-28-2009, 11:20 AM
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Its fixed. It was the DME. The output to plug five had failed. Had a recon unit fitted and its runs like a dream. Thanks to all those who gave me advice.
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#7 (permalink) Old 05-28-2009, 11:42 AM
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DME well at least your sorted, the DME would have been my last thought, anyway now enjoy.

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