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Old 06-07-2012, 01:26 AM
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Default Rough runnin, 2000 323i

Got a 2000 323i with 6cyl. Bought it 6 months ago, 165k. Running great. All of a sudden started sputtering and lose of power. Tried new gas (4 tanks by now) fuel injector cleaner (2) gas treatment(1), octane booster(1),fuel filter, air filter, spray cleaner for mass air sensor, spark plugs, coil ohm tests. put it in shop they did crank case vent tube replacement (vacuum leak) $657, all to no avail. any other clues. codes are misfire on 3 and 6, random misfire..... Coil test may not be conslusive all read the same .001 on 2k ohm setting on outside contacts.

Help?

Last edited by pooldaveb; 06-07-2012 at 02:14 AM. Reason: better identify


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Old 06-07-2012, 11:02 PM
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Default HI

I would do a live data check on lambda sensors and maf underload using INPA or another good tool, had coil wiring loom also cause similar issues,
Hope this helps.
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Old 07-02-2012, 06:24 PM
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Do you have your own code scanner, if so try moving the coils to different cylinders clearing the codes and going for another drive and see if the problem moves with the coils
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Old 08-18-2012, 12:15 AM
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How is it work now? On my opinion I would check the valve hydraulic unites .
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Old 08-28-2012, 05:22 AM
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Ohm checking coils has never worked well for me, in fact I do not use it as a test anymore. I've seen a lot of failing coils check out the resistance test, stress testing works well, but in your case I would swap the suspect coils for coils from known good coils and see if misfire follows.
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