4.
Immerse the thermostat in hot coolant to check proper valve opening temperature. Replace if necessary.
Valve opening temperature : 82° C (177° F)
Full opening temperature : 95° C (205 °F)
Valve lift (at full open) : 8.5 mm (0.33 in.) or more
Drain the coolant down to thermostat level or below.
Remove the coolant outlet fitting and gasket.
Remove the thrmostat.
Immerse the thermostat in hot coolant to check proper valve opening temperature. Replace if necessary.
Valve opening temperature : 82° C (177° F)
Full opening temperature : 95° C (205 °F)
Valve lift (at full open) : 8.5 mm (0.33 in.) or more
Heat the engine coolant temperature sender by submerging it in hot water.
Check that the resistance is within the specified range.
Resistance : 123.8 ~ 172.8 Ω at 60°C (140°F)
23.5 ~ 29.5 Ω at 115°C (239°F)
Check that the flange of the thermostat is correctly seated in the socket of the thermostat housing. If the thermostat is installed in the wrong direction, the bottom of the thermostat will thuch the rib inside the intake manifold, making it impossible for the thermostat to operate properly.
Install a new gasket and the coolant outlet fitting.
Refill the system with clean coolant.
