06 325i misfire in cyl 4 on cold mornings

Rockyca · 10-23-2015, 06:40 AM

Seems strange, but I am getting a cylinder 4 misfire when I start up my car on a cold morning. Perhaps around 32*F or colder. I replaced the coil pack, and didn't have any more issues until today.

Stranger still, when I reset my adapts / cleared the codes from the DME, the misfire went away.

Has anyone experienced this before? I would like to find the route cause rather than just throwing parts at this thing. I am going to be trading it in in the spring, and want to keep repair costs to a minimum.

335NJ · 10-23-2015, 11:47 AM

Start with new plugs, if that doesn't help, I'd suspect the injector.

10-23-2015, 06:40 AM	#1
Rockyca First Lieutenant 34 Rep 356 Posts Drives: 2016 340i M-Sport Join Date: Jan 2012 Location: Toronto iTrader: (1)	06 325i misfire in cyl 4 on cold mornings Seems strange, but I am getting a cylinder 4 misfire when I start up my car on a cold morning. Perhaps around 32*F or colder. I replaced the coil pack, and didn't have any more issues until today. Stranger still, when I reset my adapts / cleared the codes from the DME, the misfire went away. Has anyone experienced this before? I would like to find the route cause rather than just throwing parts at this thing. I am going to be trading it in in the spring, and want to keep repair costs to a minimum.
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10-23-2015, 11:47 AM	#2
335NJ Colonel 533 Rep 2,872 Posts Drives: 2008 335i 6MT E90 Join Date: Feb 2014 Location: NJ/Philadelphia Suburbs iTrader: (1)	Start with new plugs, if that doesn't help, I'd suspect the injector.
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