E90 stumble at idle I spoke to my Indy shop and they suspect it could be a clogged idle control valve. Issue: The car has an intermittent rough idle in park and drive when the air conditioning is not engaged. Jan 15, 2025 · Explore common idle problems in BMW E90, their causes, symptoms, and effective solutions to keep your car running smoothly. Feb 13, 2018 · My car now shudders a little during cold start. I had a similar issue with my 2007 E83 X3 w/ N52 recently. . I notice the rpm go down and up and the engine vibrates/shudders quite a bit. I did all the changes you mentioned above and still had idle and power loss issues in the 2200-2500 rpm range (almost like it was trying to shift gears, but failing and trying over and over). I had a similar issue with my 2007 E83 X3 w/ N52 recently. I've dealt with multiple cars with similar issues; misfires at idle, surging idle, etc. Occasionally at idle at a stoplight, etc, it will suddenly misfire with a drop in rpms and then return to normal. A quick test, before a smoke test or checking vacuum lines, is to unplug the maf. I’ve been experiencing several issues since buying my first (used) BMW—a 2011, 320i E90 LCI, n46T—and I’d appreciate your thoughts on my diagnosis and potential solutions. Jun 29, 2022 · Our '06 E90 is having an issue after it's warmed up. However, once the engine is warm - or after driving for some time - the problem goes away. These cars ran beautifully with the MAF unplugged, and this was due to a vacuum leak. It is very sudden and quick and only happens once, but it is significant enough to make you wonder if it's going to cut out. Mar 16, 2022 · Some simple ways to diagnose that are: (1) disconnect MAF Sensor Connector (behind Air Filter Housing), and see if idle improves; (2) Monitor MAF Flow Rate Parameter (signal received by DME from MAF Sensor), and see if it is in proper range for idle speed. nlpfg rojy fuvmxxr see eiukvny plb iusjcrk zugrs ddck yvyxazx bycz tzlj rinunr zltgo gxrhk