A/C fabulous most of the time,then won't cool.Turn OFF few min,Back ON it's cold on 1998 Mercury Villager

Usually when we start up from park in the Florida Sun, it comes right on and COOLS GREAT. After driving awhile, it stops cooling,and won't start cooling again unless I turn off the switches awhile. Then (usually), when I turn it back on, push the recirculate and a/c buttons, it will cool great again. I had similar problem with other cars, and there was a temperature sending unit which was defective, and nothing wrong with my compressor. NO PROBLEMS with front or rear Blowers.

Your air conditioner is probably a little low and is icing up. When you turn it off for a while, it thaws & works again. The Villagers also have intermitant problems with control head.