2010 Lonestar AC Issue

[Smooth]

Alright guys need some help , I am at end of my rope here.

2010 Lonestar - Cummins Sleeper Truck

Have cold AC in sleeper but not in the Cab.

All Actuator Doors are working - 1 Mounted top Fan , 2 behind Fan Unit under Fusebox -
Blend Door mounted on Firewall I am Assuming is working correct, opens and closes. It should be closed for AC to restrict Hot Air from Engine Comp out - It is fully Closed

New COmpressor, Drier, Evap , Exp Valve, 3 lbs Freon (Have AC Machine)
There is no Hand Valve on Coolant LIne to turn off Water to Heater Core IN Dash but again appears Blend Doors are Functioning which is restricting any of the air passing through heater Core.

First unit we have had with Thermister - Could they have anything to do with the issue. But again Sleeper has Cold AC -
There are 2 Thermister on Drier/Evap.

Does the sleeper have its on functioning Thermister's? I know it has its on Exp valve

Also Changed all Filters -

Any ideas

[Lonestar10]

get a hose pinch plyers or vice grip and pinch off one of the lines to cab heater core. if air gets cold theres your issue. if not then refridgerant is not traveling through that core.

[Waterloo]

If you are outside in the sun working on the AC, and do not have that heater core off, you are not going to get AC. The other thing I did was to dig the outside ambient air temp sensor out from under the radiator and get it to some fresh air. I moved mine all the way up to the windshield wiper cowl. It does connect to your AC system, I discovered that on my own while troubleshooting something else with Body Builder.

Do those two things and you will freeze yourself out of the cab. I have been running down around I-40 and by noon I have to turn the heat on. I also installed three fans in the truck, Yacht fans, boating... One under the overhead, two in the back corners of the sleeper blowing the cold air out of the sleeper up front to the cab. It gets painfully cold in the cab now.

Here are the fans...

Caframo Ultimate. 12V Lighter Plug Fan for Boats and Campers. Easy to Clean. White
https://amzn.to/2HhY16N

And here is Body Builder, you will find your truck a few lines down...
http://bodybuilder.navistar.com/General/BBcircuitIX.htm

That temp sensor is under the radiator in the harness, driver side, under around ten yards of tape. It has a clip on it and a little bulb, two yellow wires on mine. About the size of your thumb. Just get it away from the radiator and engine heat. Your AC will thank you. And install this valve,

Motorized Ball Valve- 1/2" Brass Ball Valve with Full Port, 9-24V DC and 2 Wire Reverse Polarity by U.S. Solid
https://amzn.to/2KPb4gI

Here is the switch you will need to operate it.

ESUPPORT Car Univeral Heavy Duty 20A 125V DPDT 6P On/Off/On Rocker Toggle Switch
https://amzn.to/31KaiZk

If you install fans, here are the remote controls I use, you will want these if you go the full monty on the AC...

DONJON Wireless Remote Switch with 328ft Long Range DC 12V/24v/48v/72V Switch
https://amzn.to/2HeYuqn

[Smooth]

Thanks guys did the trick - Wish would have asked last Friday. Would have saved some head beating against the wall

Bought 2 - 2010 Lonestar while back - Will be asking for help with my Next problem soon lol
Not as easy Fix lol