Thermostat: Service and Repair

Engine Coolant Thermostat Replacement (1.4L LDT/1.6 LXV)

Removal Procedure




Warning: Refer to Battery Disconnect Warning (Battery Disconnect Warning).

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (Service and Repair).
2. Drain the coolant. Refer to Cooling System Draining and Filling (Service and Repair).
3. Remove the upper radiator hose from the thermostat housing.




4. Disconnect the thermostat wiring harness plug.
5. Remove the thermostat housing retaining bolts (1).
6. Remove the thermostat housing (2).
7. Inspect the thermostat for proper operation. Refer to Thermostat Diagnosis (Thermostat Diagnosis).
8. Clean the thermostat housing and the cylinder head mating surfaces.

Installation Procedure





Note:
* Do not use fallen parts. Plastic housing is very brittle and the fallen part may have internal crack that cause coolant leak.
* Do not reuse rubber gaskets.
* Check a coolant leak after the part replacement.

1. Fit the thermostat housing to the coolant distributor and use the NEW gasket.

Caution: Refer to Fastener Caution (Fastener Caution).

2. Install the thermostat housing (2).

Tighten the thermostat housing retaining bolt (1) to 8 Nm (5.9 lb ft).

3. Connect the thermostat wiring harness plug.
4. Install the upper radiator hose from the thermostat housing.
5. Refill the engine cooling system. Refer to Cooling System Draining and Filling (Service and Repair).
6. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection (Service and Repair).