‘93 W900L A/C issues

Agreed on the heat load. Still using a grilldensor on my 93. Not ideal with R134a . Over 85* ambient you just lock the fan on at anything short of 70mph. Which TRP condenser are you using? I may try some sort of remote mount and electric fan. In reference to OP, I have cleaned everything inside the box and checked the blower and sealed it up good and it still doesnt put near the volume of air out of the vents that it is taking in through the fresh air or recirculation intakes. I guess it is also leaking in the dash. Fortunately, the bunk air works great so no problem staying cool.

 

I have a 94 w900 and my bunk ac isn't working is seems like there's no freon going to the bunk coil and I can't find any information on the sleeper components on one of the line's it has some type of solenoid idk if that's like closed and not letting the freon go up to the coils if anyone has any knowledge to o share that be greatly appreciated thank you

 

Do you see any condensation on the lines going to the bunk? Is the heater valve on the Waterpump closed? If not, close it, to turn heater core off.

 

No there is no condensation on the lines going to the bunk and a my heater vaulve are closed I'll try and post a picture of the bunk sleeper so y'all can see wat am talking about

 

Could be a bad expansion valve, but maybe the high pressure switch is bad, and shutting it down, You can unplug it and jump the plug with a paper clip, see if compressor stays running. Keep an eye on pressure, if you let it run for any amount of time, or charge it up, don’t want to blow anything. Best Jump it to diagnose, and replace if necessary, before charging up.

 

York compressors are crazy #####y about contamination, and will lock up in a heartbeat. Make sure if you take anything apart, to clean thoroughly. If you are having trouble taking freon, and jumping the high pressure switch doesnt work, expansion valves are cheap. I'd replace both. Along with the reciever/dryer.

 

Sometimes it takes a while, especially if it’s cycling. Once it stays on, sometimes the last can or two, can take a long time. Maybe even an hour. The system can also take a long time to adjust itself. It’s easy to get impatient and over fill it. Best to start with an empty system, and only put in the required amount. Foolproof. Those York clutches aren’t very good. Slightest bit of heat, and they’re toast. Once they sieze up, almost always overheat the front compressor seal, and bearing, ruining the compressor. They’re pretty cheap, and easy to change. Only 4 bolts, might be the problem. It would be a good idea to upgrade to a Sanden, eventually. Save yourself a lot of grief. Find a similar Truck with a Sanden. Use that vin for parts.

 

Most likely expansion valve. Just change both and install new drier while system is dumped. They are cheap and usually pretty easy to chAnge and about 90% of the time the culprit of the conditions you are describing. And yes to who ever said to change from a York to Sanden.

 

AP Air Inc in Humbolt, IA has a york to sanden direct bolt up kit. If you call them, they will probably tell you to keep with the york style, and make sure your system is perfectly clean. A york "should" last forever. I had one last 17 years. Been thru 3 compressors in the last 2 years.