Enroute to Arizona last Sept, we were truckin along across the Navajo Nation when my rv just lost power, it didnt die but dropped in rpms to an idle and it would not do anything except for run at that speed. We stopped and shut the engine down and I looked over the engine and found no problems. But now it would not start. I finally turned off the chassis air conditioning and it started but had an engine light on. We continued to Petrified and let it ride until I came this way to get it looked at. Anyway when we started yesterday at Petrified it started fine and the engine light did not come back on. I am thinking maybe the airconditioner pump might have froze or quit and it shut the engine down. Not sure though. Belt didnt break but I have not tried to air to be sure for fear of something happening. The air pump was doing a bit of squealing when we first started up and left Utah and fact we could not start rv with air turned on is what makes me think it may have hung up. Any ideas or suggestions before I take it into the shop on Monday.