2.
Disconnect the radiator upper hose.
Disassembly of the thermostat would have an adverse effect, causing a lowering of cooling efficiency.
Drain the engine coolant so its level is below thermostat.
Disconnect the radiator upper hose.
Disconnect the water temperature sensor connector (A).
Remove the water inlet fitting (A) and thermostat (B).
Tightening torque :
24.5 ~ 34.3 N.m (2.0 ~ 2.5kgf.m, 18.1 ~ 25.3 Ib-ft)
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
Remove the air duct and air cleaner assembly.
(Refer to Intake And Exhaust System - "Air Cleaner)
Disconnect the EGR cooler hose (A).
Remove the thermostat housing (A) with the gasket.
Tightening torque :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 Ib-ft)
When Installing the thermostat housing, replace with a new gasket.
Installation is reverse order of removal.
Fill with engine coolant.
(Refer to Cooling System - "Coolant")
Start engine and check for leaks.
Immerse the thermostat in water and gradually heat the water.
Check the valve opening temperature.
Valve opening temperature: 90±1.5°C(194±34.7°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 : 8mm (0.3in) or more at 100°C (212°F)
If the valve lift is not as specified, replace the thermostat.
