R134 Conversion Woes - Evaporator Freeze-Up

Mopar "A" bodies with the RV compressor did not use the "evaporator pressure regulator valve"...they have a thermostatic switch that cycles the compressor on and off to prevent evaporator freeze up. If your evaporator is freezing up you've got a problem with that switch. Either the capilary tube is not pushed into the fins of the evaporator or the the switch is bad. Easy fix no matter with one.