I have stopped on several occasions to see what is going on under the hood while the engine is running. The clutch was disengaged on the AC unit. I checked the high-pressure switch, the wiring to the switches and the connections to the AC unit it self, I even thought that it may have been the high speed switch. But it happens at all speeds and there seems not to be anything wrong with the connections and all. I have removed the AC relay and replaced it while the car was running, after a few seconds it started. I still don’t think it was the relay, but I do have one on order. I just checked the temp sensor in the car and it seems to be fine as well. I did discover something, I put some gauges on the system and it seems as if the low side is running a higher pressure than it should. I have started to lower the low side to about 30 pounds. The high side is fine at around 245. Tomorrow I will replace the dryer and vacuum the system for a couple of hours, starting over. Still searching and looking for more advice. The next time it shuts down I will disconnect the mono valve and see what happens. If it starts I would assume that I would need to replace the monovalve.