AC issue... Compressor on its own schedule.

[Waterloo]

Going down the road, air blowing ice cold, have heater core valve off, ice cold and then warm air. I will get five minutes of ice cold air and then a half hour of warm air, and then back to five minutes of cold, and back, etc.

From what I can tell, is that the compressor is not getting the signal to turn on, and I'm thinking the thermistors or temp/high pressure switch? Any thoughts before I attack this new issue. I have the body controller switch installed, and that is not the issue. Fan in dash works, but have noticed that the Engine fan is not turning on when it normally would with the air on going down the road or just starting out from a stop. Need some help... Shaking head.

Dear Lord, just give me a week without issues!