After 169K, my air conditioner has started to randomly stop blowing cold air. When I first start up it takes about 5-10 minutes before cold air will start blowing out. But then at random times throughout my day(75-150 miles) the air will stop blowing cold for up to 30 minutes at a time and them come back on for 15-20 minutes. If I am correct, I believe this would be caused by an air pressure switch not working properly? Anyone know more about this type of problem??

 

did you check the pollen filter? mine was doing this when it was really plugged.