Operation CHARM: Car repair manuals for everyone.

Pressure, Vacuum and Temperature Specifications

Radiator cap Opening pressure 93 - 123 kPa
Thermostat Opening temperature Begins to open 169 - 176 deg F
Fully open 194 deg F
Radiator fan switch Switching temperature Turns ON 196 - 203 deg F
Turns OFF Subtract 5 - 15 deg F from actual ON temperature