Well I didnt know what to call it but I will still expain to see if you guys have similar problems? If you have been keeping track this is problem 4 with my R/T. If the A/C is on in any setting when its on a/c setting on it will blow cold quick but theres still and issue. It will got Hot for a second or two every few minutes. With a digital thermo in hand a friend and I went on a ride and sure enough its 66 at the vent then jumps to 89 for 3 seconds at a time. Its random in time. Anyone else?