Thermostat: Service and Repair

Coolant Thermostat, Removing, Installing and Checking

Removing

Note:
- Always replace seals and gaskets.
- Obtain radio anti-theft code on vehicles with coded radio.
- Secure all hose connections with hose clamps of the same type as those installed at the factory.

- With the ignition switched OFF, disconnect the battery ground strap.
- Drain coolant system. Service and Repair
- Detach coolant hose at bracket for solenoid valves above alternator.






- Unbolt bracket for solenoid valves -2- and -3- in front of intake manifold and detach dipstick guide tube -4-.






- Pull connector -3- and vacuum hose -1- out of bracket.
- Lay bracket clear to the side without detaching remaining connections.






- Disconnect coolant hose from elbow connection -3-.
- Unscrew bolts -4- and take off elbow connection, O-ring -2- and thermostat -1-.


Installing
- Clean and smooth down sealing surface for O - ring as required.
- Insert coolant thermostat.
Installation position: bowed metal strip on thermostat must be vertical.
- Moisten new O ring with coolant G 012 AS D.
- Tighten bolts.
- Fill up with coolant. Service and Repair

Tightening Torque
Elbow connection to cylinder block: 15 Nm
Bracket for solenoid valves to intake manifold: 10 Nm

- After connecting battery terminals, enter anti-theft code for radio.
Refer to radio operating instructions.

Warning: If a battery charger is used to give the engine an assisted start, there is a risk that the control units in the vehicle will be damaged.

- Close electric windows in front doors all the way to their top positions using electric switches.
- Then operate all electric window switches again for at least one second in the "close" direction to activate the automatic one-touch function.
- Set clock to correct time.
- Interrogate DTC memory:

Note: DTCs will have been stored in the memory because connectors have been disconnected. Therefore interrogate and erase DTC memory after installing engine.

Testing Coolant Thermostat

- Heat thermostat in water bath.






1) Cannot be tested.