Please help!! A/C and Heater problems in my Fox?

[scootro]

O.K I did a few searches on this site but didn’t find my answer.

My problem on the 1993 cobra. I can only use 3 selection on the heat controls to blow heat(the floor, floor & defrost, and just defrost) and if I use the dash vent or the 2 a/c controls my a/c compressor will lock up and the motor will stall an die.

The only thing I put on my a/c compressor was a new clutch hub (you kno that disc on the front of the belt pulley that spins when a/c kicks on.

What do you think my problem is? I was hoping on a easy fix, but it looks like my problem might be the a/c compressor itself or the a/c clutch that I have no idea how to install. By the way I do have refrigerant in my system and it is full.

I’m hoping to get this fixed before summer hits so I could have nice cool a/c in this car. Last summer with black interior I freaking sweat to death. It sucked.

Thanks in advance for the help.
Scoot