Well, I purchased the Ram about a month ago. I've been replacing fluids, and it runs very smooth. It's a 99 V10, 2WD. This last weekend, I started noticing the idle fluctuating when it is cold. It's not a rough idle, it just changes. Like it's hunting for an optimum idle or something. It goes away when it's warmed up. I tried searching for what it might be, and came across this TSB, but it's for the 3.9 size engines.


http://dodgeram.info/tsb/1997/18-13-97.htm

This describes what my truck is doing. Think this could be it? I also found looking through the forums, that maybe cleaning the IAC might help? I haven't done that yet. Probably this weekend.

 

i would try to clean the iac