Any follow up on this? I am in the same boat.

The compressor would engage but no cool air. The refrigerant lines don't feel hot or cold.
I had 108 low and 110 high with the engine off from overnight.
With the engine at idle I had a steady 84low and 135 high.
I added some dye and 12 oz of 134a. With no improvement.


Does the system need emptied to replace the valve?
Thanks!