To anyone, I got a 04 2500 ram with a cummins 182,000 miles and im workin the bugs out of it, just latle the temp has been below 0 here and the wait to start lamp has come on and has stayed on for a week at least and it wont start if it gets cold, it runs great once its warm im looking at the IAT Sensor as the problem and I dont know where its at. Any Idea's, thank shawn