Mike, thanks for all your help, When I started this project the first thing I changed was the hi/lo switch cause it was leaking oil. The expansion valve I could not cross over so I looked through pages of valves to find one that looked like mine and it was for a Honda, mistake # 1, orifice was way to small for this system so I cleaned the old one, tiny screen was plugged. I replaced the condenser, also plugged and the dryer and got it to start cooling. A buddy of mine has a 6000.00 snap-0n ac charge station at a shop he runs. The schematic you show is spot on and my condenser is in the front with a fan. The fan was wired as a sucker fan, made no sense to me as it would be fighting any incoming air when going down the road so I switched wires and now it is a pusher fan. Also the 16" fan on a 22" condenser made no sense to me so I got a universal fan shroud and mounted the fan to that to force more air through more surface of the condenser. My last pressures I took were 150 high side, 38 low at idle on a 85 degree day, got 53 degree air out on high fan. I hung a curtain behind the captain chairs to limit cooling area as I realize it will never cool the coach as a whole. I did try more Freon 134 but temps went up at idle so I let some out. I'm at about 3.8 lbs of Freon right now. Tomorrow will be 104 hear and will go to my buddy's and get it on the machine and see what the pressures are at 2000 rpm as that is where the problem lies. As soon as I get on city streets it cools better. Did I make a mistake with the shroud? Should the fan be stand alone and as a sucker? It was 92 degrees when I left the track Sunday, a 3 hour drive and at Idle it was pushing 54 degrees fan on high, once on the freeway at 2000 rpm temp kept rising to 64 as I got home, but once off the freeway, a five mile drive to home it was back down to 57 and it was 97 outside. Thanks again for your help, we will get it figured out eventually. And I did flush the evap and It was clean.