14 Prostar A/C

I am still pretty new to the industry and learning the ins and out of maitenance. I have a 14 prostar and the newest issue is the a/c not working at idle. When running it will work just fine. At idle the temp gets up to about 185 and if you rev it you won't get the noise that the fan is moving the air it should be. If you get going down the road the fan kicks in and the temp drops but the a/c will still blow hot. You stop and restart the engine and take off it will work just fine. It doesnt doesn't matter what the outside temp is it will still idle hot with no a/c. This is a newer problem since I've sat in 90 degree heat in laredo before and the temp never broke 170 and it blew cold. Last night it was 70 yet the water temp was still 185. I've xhecked the coolant and a/c refrigerant and both are at normal levels and the a/c compressor will cycle on and then right off at idle. I think it may be in the clutch relay or some sensor I've never heard of. Any help here is appreciated

 

I figured it was something in the cooling system. Thank god I'm going home soon. Just gonna drop it at the dealer

 

I know it's not the rpm. Ive idled in much hotter and had it work @ 500 rpm. It is definitely going to the dealer this week when I get home

 

At this point I think I've narrowed It down to the fan. Let the truck sit while off after driving and the fan came right on and the ac worked fine. Fan stopped and ac quit.

 

If anybody is still interested the verdict came in. #### thing was down for over a week. Ended up putting a new compressor and condensor on. You ask me that wasn't necessary. But the big one that we all suspected was bad was bad. The fan drive. It now blows cold enough at idle that I can hang meat in here.