· El Camino Central Founder/Co-Founder N.E.C.O.A.
Bobby, I still think you are low on charge. Feel the evaporator inlet (the small line) and the evaporator outlet (goes to accumulator), they should feel about the same temp. If the outlet is warmer, you're undercharged. As far as the thermostatic switch is concerned, the ones with the small adjustment screws are for very fine tuning only, you will not get more than a turn or so on each at best. Thermostatic switches don't care what type of refrigerant you use, temperature is temperature and ice still forms on the evaporator around 32*. Like I said before, you need the type of switch used on the old knee-knocker underdash units if you want adjustment: