Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.
Do not remove the thermostat, even if the engine tends to overheat.
Disconnect the battery "-" terminal.
Remove the engine under cover.
Drain engine coolant so its level is below thermostat.
(Refer to Cooling System - "Coolant")
Remove the ratiator lower hose (A).
Remove the water inlet fitting (A) and the thermostat (B).
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)
Install in the reverse order of removal.
Fill the radiator with coolant and check for leaks.
(Refer to Cooling System - "Coolant")
Immerse the thermostat in water and gradually heat the water.
Check the valve opening temperature.
Valve opening temperature:
88±2°C (109.4±3.6°F)
Full opening temperature: 100°C (212°F)
If the valve opening temperature is not as specified, replace the thermostat.
Check the valve lift.
Valve lift : 10 mm (0.3937 in.) or more at 100°C (212°F)
If the valve lift is not as specified, replace the thermostat.