I just dropped my roadster off this morning at Preston Chrysler-Jeep in Dallas for the same problem...plus the passenger side foglight falling apart (known problem)...plus the headlight housings hazing badly on the outside upper portion (another known problem). Oh, and a couple of known noise problems as well. I figured the service visit might as well be worthwhile as long as the warrranty is still active!

I left detailed written notes (especially about the "charge air cooler circulation pump" in Factory lingo, "intercooler pump" in ours). I wait with interest to see what they have to say. I'm betting that they will try to replace the IAT sensor first as a fix.