90 525i Sputters When Cold

[Pwr2spare]

When I start the car in the morning after it sat over night in the garage it idles like normal. However, when I start to drive it sort of stutters in first and second gears and then drive smoothly. Once the car is warmed up which is after about 1Km it never stutters again. I have just changed the fuel filter, cleaned the throttle body and idle control valve. The stutter is still there. Any Ideas as to what could be causing this problem? I was wondering if the O2 senser could be the culprit. Any help is appreciated.

P.S. I am located in Toronto

[Kamil]

I have the exact same problem w/ my 535i... I've got one reply, here's my post:
http://www.bimmer.info/forum/showthread.php?t=7583

[Pwr2spare]

Kamil, Had the car on highway the other day and drove it hard. When I returned from the drive I noticed that the idle was smoother. The next morning when I started the car it idled smoothly and no sputter. I have been doing alot of city driving lately.