Our dash a/c (Evans) stopped getting cold. It all works, blows air and puts it in the right place, gets warm when I ask for heat, just don't get cold on a/c.
I verified that the water valve moves properly.
I crawled under and saw that the a/c compressor clutch never engages.
I bought a can of r143, but the system won't take any refrigerant (because the compressor clutch is not engaging?) The pressure gauge on the refill hose reads 150psi when it should be down around 40 (because the compressor clutch isn't engaging?)
Whenever I work on A/C systems, I always get stuck here... If I wait so long that the compressor isn't engaging I can't get it to take refrigerant.
What's the trick to get the compressor to click on so it will suck up the refrigerant?
