3.9 Liter Ram Wont Idle When Cold

[JSiemens]

I have a 2001 Dodge Ram 3.9 liter that will not idle when cold. It seems OK after warmed up. I am searching previous threads but would still like to ask.
Thanks very much.

[discnik]

It sounds like a possible vacuum leak. You can use carb cleaner, spraying it around the manifold, and other vacuum areas, listening for a change in idle RPM.

No "Check Engine" light ?

I have seen very small vacuum leaks, had to use a smoke machine to find it, cause this sympton and not throw a code.

ALWAYS practice Safety AND Caution when working around moving parts.

Just a thought.

[hundahunta]

clean the iac and check the battery.

[bratt]

yeah, i had the same problem. I cleaned the IAC and it idles fine now. It was full of carbon