View Single Post
      12-04-2012, 12:19 PM   #1
bluekn8286
Private First Class
5
Rep
180
Posts

 
Drives: 2011 E92 BMW M3 Dinan S1
Join Date: Mar 2011
Location: San Jose, CA

iTrader: (0)

e92 rough idle as engine settles

When the car is initially started and just before the engine settles, I notice that the idle gets noticeably rougher and lumpy (it looks like it is jumping from 500 rpm to a little above it; around 800 to 900 rpm multiple times). I notice this mostly during cold starts in the morning and very very slightly during the day. I have been told this is normal, but I wanted to confirm. Otherwise, my car is throwing no check engine lights and it drives just fine.

Thanks everyone