Thermostat: Service and Repair

REMOVAL AND INSTALLATION

Installation Service Points
]A[ Thermostat Installation





[SOHC]
Install the thermostat to the intake manifold as illustrated.

CAUTION: Be careful not to install the thermostat obliquely by fitting the thermostat flange in the spot facing provided in the intake manifold.

[DOHC]
Install the thermostat with its jiggle valve lined up with the mark on the thermostat housing.

]B[ Air Intake Hose A Installation

Fig. 57 Installing Air Intake Hose "A":

Assemble the air intake hose A with its notches (arrow-marked) lined up with the - marks on the air intake hoses B and C. Insert the hoses into the air intake hose A until they are bottomed.

INSPECTION





- Check that valve closes tightly at room temperature.
- Check for defects or damage.
- Check for rust or incrustation on valve, and remove if necessary.
- Immerse thermostat in container of water. Stir to raise water temperature and check that thermostat opening valve temperature and the temperature with valve fully open [valve lift-over 8 mm (0.31 inch)] are at the standard value.





Standard value:
Opening valve temperature
[SOHC] 82°C (180°F)
[DOHC] 76.5°C (170°F)
Full-open temperature
[SOHC] 95°C (203°F)
[DOHC] 90°C (194°F)

NOTE: Measure valve height when fully closed.