BMW M3 Forum (E90 E92) - View Single Post - Strange idle issue after battery replacement

Theodore · 02-10-2019, 07:30 PM

I recently began experiencing something similar (but with my DCT car). A cleaning of the very dirty butterfly valve of the idle control valve took care of the issue in my case. Follow this DIY from DATM3, but leave the ICV installed, remove the rear connecting hose, inspect, clean and reassemble if you want to give it a try. If you look carefully in this photo, you can see part of the butterfly valve inside the metal connection point at the top of this ICV (rear if installed in the car). You can also see the some carbon build up as well.

Image borrowed from DATM3's DIY here.

02-10-2019, 07:30 PM	#2
Theodore Lieutenant 669 Rep 412 Posts Drives: 2011.5 E92 M3 Join Date: Oct 2015 Location: Tampa Bay, FL iTrader: (6)	I recently began experiencing something similar (but with my DCT car). A cleaning of the very dirty butterfly valve of the idle control valve took care of the issue in my case. Follow this DIY from DATM3, but leave the ICV installed, remove the rear connecting hose, inspect, clean and reassemble if you want to give it a try. If you look carefully in this photo, you can see part of the butterfly valve inside the metal connection point at the top of this ICV (rear if installed in the car). You can also see the some carbon build up as well. Image borrowed from DATM3's DIY here. __________________ What I Wish I Knew When I First Bought My E9X M3 Can Be Found Here E9X M3 Exact Original Equipment (OE) Equivalent Parts Can Be Found Here E9X M3 Common Torque Specs Can Be Found Here E9X M3 "Factory" Tools Can Be Found Here
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