Table of contents: Removal ↓ Examination ↓ Installation ↓ Removal, 5-cylinder engine ↓ Installation ↓
Removal
Place a container under the thermostat housing flange.
Unscrew the thermostat flange "2", drain and collect the coolant.
Remove the coolant thermostat.
Examination
Measure the dimension "a" on the regulator, see fig.
Heat the regulator in a container filled with coolant. It should not touch the walls of the container.
Control the temperature with a thermometer. Start of opening the regulator:
- 4-cyl. engine: about 85°C, end about 105°C,
- 5-cyl. engine and 1.9 l diesel engine: approx. 7°C/102°C.
After heating the regulator to 105°C, dimension "b" should be at least 7 mm larger than dimension "a" (5-cyl. engine: 8 mm).
Installation
Replace the O-ring, put the regulator back in place and screw the cap on. Fill the system with coolant.
Start the engine and warm it up until the thermostat opens. Check the cover seal and the tightness of the hose connections.
Removal, 5-cylinder engine
The coolant thermostat is located in the housing on the left side of the cylinder head.
Drain the coolant.
Unscrew the 2 cover bolts and remove the regulator.
Check the regulator.
Installation
Insert the regulator and screw on the cover with a new gasket using a torque of 10 Nm.