Right now it's blistering hot in the St. Louis area. Yesterday we were on the highway keeping nice and cool with the A/C set on recycle cabin air. All of a sudden, the air got warm and humid and stayed that way for couple of miles. I punched the button to admit outside air and then punched it to go back to recirculate and it started cooling again. We drove another 20 miles, stopped and visited and was returning home when the crazy thing repeated the problem in the same place it did while we were going. It did it again today and after taking it off recirculating and pushing the button again it started putting out cool air again. Both days the outside air temp was 100 deg. Is this something it does to "rest" for a minute or is something going haywire?