Re: weird idle when cold
Get your codes pulled and see what the computer(s) say. I had this issue, which turned out to be a #6 misfire caused by the PCV elbow being pinched shut. Replaced that, and viola...instant smooth idle again.
Illegitimati Non Carborundum!
(Don't let the bastards grind you down!)
2003 Edge x-cab, 3.0FFV, 5R44E, RW, 4.10 gears