New Compressor and new pressure switch (on dryer) correct amount of 134a vacumed down and leak tested at the local a/c shop and not leaking. Drove 300 miles yesterday and for most of the trip she was blowing cold but then the a/c light on the button turned off and it started blowing warm. This morning get up and turn it on it worked for 5 mins and then the light turned off again. Just got in the truck tonight took a 15 minute run and the a/c blew cold and remained on? Any help in debugging appreciated.