Pressure, Vacuum and Temperature Specifications

Cooling System Pressure Test Specifications
Pressure 110 kPa (16 psi)

Radiator Cap Pressure Test Specifications
Pressure relief cap opening pressure 110 kPa (16 psi)

Thermostat Opening Temperatures
4.6L (2V)
Starts to open 87 - 93 °C (192 - 199 °F)
Fully open 104 °C (219 °F)
4.6L (4V)
Starts to open 84 - 88 °C (183 - 190 °F)
Fully open 99 °C (210 °F)