E46Fanatics - View Single Post - Rough idle cold start CEL on 325XI
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Old 12-17-2012, 06:22 PM   #5
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Join Date: Sep 2009
Location: Eastern Shore, Virginia
Posts: 56
My Ride: 2001 325xi
Im also interested to know what codes you get. My car has the exact same problem you have described. The only code it ever throws is Misfire Cyl 3, i have swapped coils and plugs, all with the same result. Even replaced plugs and coils over the summer, still same problem when it gets below 40 degrees.

One odd thing i have found, is when it starts running ruff and i clear the code, it immediately runs smooth?
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