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Alright, for posterity in case anyone else has a similar problem , this valve was indeed the issue. At least half of it.... I took the top back off and watched the unit in operation, the servo that operates the doors, when it tried to rotate, could not fully. The cable going to the valve had a...

Many thanks, I have found other posts where people had issues with hot systems blowing cold and vice versa, and the common fix was replace, replace with simple on off and control manual, or lock in one position (which would likely work in TX, as I need AC 9 months of year and not doing much on...

I just noticed you provided the link under the images, and I am using the pats diagram interactively now, likewise I have seen that is a water valve. Presumably to channel hot water for engine to heater component? Therefore is it possible if stuck in the wrong position that accounts for why I...

Will do, can you tell me what the valve at 150 is. I do not believe I any door rods between testing and reassembly, but I DO know that valve the little lever on top was bent, as well, it did not appear to have the sheath on the cable like it shows in the diagram. I even remember taking note and...

I recently had a tree fall and put a limb though the roof of my cab. The AC unit was tested before I put the headliner and roof back on, seemed to work fine and blew plenty cold. After putting a new roof on and headliner back in, the front two vents on windshield blow hot while the side and...