318ci Idle problems
2001 318ci coupe e46.
initial running is fine and throughout the rev-range is seemingly fine also. After a while once it's warmed up (it doesn't seem to do it from cold just yet)at idle the needle shakes a little and dips down to near 0 and then brings itself back up to just under 1,000rpm.
the engine sounds like a bag of ... until you rev it. i don't think it's as misfire as it's smooth throughout the rev range. The idle problem is also intermitent. Sometimes when you dip the clutch as you break before lights etc it almost stalls but brings itself back up to under 1,000rpm.
personally suspect ICV, and a friend is to connect it into his diagnostic machine tonight; just wondered if anyone else had this issue.
p.s. is the ICV easily accessible on this model or is it down below the inlet manifold? i see there are two sensors on the side of the plenum chamber.. pressumably one is throttle position sensor?