Idle at cold start

[hayastusa]

There's an idle screw on the fuel rail under the headlight pod bracket. Give it a turn to the right.

 

[Captain D]

I've adjusted the idle screw. It's set at 1500 rpm. Again, my issue is ONLY when is cold (not running for several hours).

 

[1yamman1]

Its seems as if the ECU thinks your engine is already warm, so that really sounds like the coolant temp sensor. Are you getting the cold engine light on your dash when you first start it?

If you PM me your email addy I can send you the service manual the explains the daig stuff.

 

[Captain D]

The cold engine light IS on when I first start it. I was reading about the IAC. Idle Adjustment Controller. I wonder if that has anything to do with this problem.

 

[attakmod]

Did anyone find the problem? Mine started doing this to.