Originally Posted by jim22
Most cars (not sure about the rangers, but probably) have a de-ice temperature switch in the evaporator core which shuts off the compressor if the evaporator drops below freezing.
The Ranger uses a low pressure
Cycling Switch to infer the freezing point. Working correctly, it prevents the compressor from operating when the evap core temperatures drop below the mid-30s F. It's the same basic idea as the core temp switch but it goes at it a different way.
2003 FX4 Level II, Supercharged 5.0L V8, Headers, Duals
BW4406 manual transfer case, Aussie Locker, Torsen L/S, 4.10's
Bilstein 7100 rezzies, Cadillac/Mustang rear discs, Duff traction bars
Keypad Entry, Lock LEDs, ABS switch, sway bar discos
Heated seats, Explorer EATC, Trip Computer and consoles
2003 XLT 2.3L M5OD-R1 reg cab beater, 2011 Taurus SEL, 2016 C-MAX Energi Plug-in Hybrid