To all that responded to my plea for help in saving some green for other parts for my 90 toy, thanks for your help. Removing power by disconecting the battery did the trick!!! It was great to hear the A/C come to life after the battery was reconnected. Thanks again.

 

That feature is all in the control head based on what it sees from the pressure switch on your accumulator. If that is what happened, either you were low on freon or the switch is getting bad. Chevy trucks around those same years do the same thing. [8D]