Throttle Body Gasket
 

My X has been very cold blooded ever since I bought it. I warm weather it starts and runs fine, but when the temps outside get near freezing it stumbles and runs rough until it warms up. It gets really bad if you leave it outside when the temps dip below the 20's.

I tried replacing the valve cover gaskets, as well as cleaning the oil separator and replacing the oil separator lines (all of which needed done anyway), but the problem persisted. Now that my wife is driving the car every day and it's getting cold outside, she complained that it was getting pretty bad.

Last night I replaced the orange O-ring between the throttle body and intake manifold.

Problem Solved! It runs nice and smooth on cold starts now!

Thought I would post this in case someone else was having the same problem.

:thumbup:

Always helpful when someone post a fix to a problem. Thanks for posting.

I replaced mine when I did my original CCV swap out this summer. The stock one looked fine, but while I was in there it was cheap and easy to do, and I won't have to tear it back apart anytime soon.