| Originally posted by jllphan@May 3 2005, 10:19 PM |
Probably not ICV. Symptoms of dirty ICV are modulating idle, not rough upon start up.
It's either plugs or O2 sensor.
Change plugs every 20K miles
Change O2 every 60K miles
Funny you should mention this problem with your car. My wife's 318i was doing the extact same thing yesterday. Rough idle and the Check Engine light came on. I took a look at the basics when I got home. Air filter, etc. In the process I discovered that there was not one drop of oil in the car!
Threw in a few quarts. Rough idle gone. Check engine light still on.