I just took my 1998 Z3 1.9 over to the BMW dealer with a low idle problem. Idles low, looks like about 600 rpm. Does not cut off, but just about does while in neutral whether hot or cold.
They said that a hose, vent valve and two up take manifolds needed to be replaced.
Does this sound right to increase idle. Just want to know for sure due to the price they are charging me.