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XC70 L5-2.5L Turbo VIN 59 B5254T2 (2003)

Engine, Cooling and Exhaust > Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Service and Repair > Engine Temperature Sensor > Page 3246

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Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Replacing the Thermostat and/or Engine Coolant Temperature Sensor

Replacing the thermostat and/or engine coolant temperature sensor

Special tools:

951 2885 Sleeve  See: Tools and Equipment/951 2885 Sleeve 

Replacing the engine coolant temperature (ECT) sensor

Removing the engine coolant temperature (ECT) sensor

Remove:

-

the upper timing belt cover

-

cable from the sensor

-

the sensor from the thermostat housing. Use socket951 2885 Sleeve  See: Tools and Equipment/951 2885 Sleeve.

Note! Put paper underneath the sensor to prevent coolant spillage.

Installing the engine coolant temperature (ECT) sensor

Install:

-

the sensor with a new seal

-

Tighten to 22 Nm, use socket951 2885 Sleeve  See: Tools and Equipment/951 2885 Sleeve 

-

the upper camshaft cover.

Replacing the thermostat

Preparation

Remove the cap from the expansion tank.
Install a hose clamp on the upper coolant hose.
Raise the car. Remove the lower splashguard.
Position a container under the engine drain cock. Drain 2 liters of engine coolant.
Close the cock. Install the lower splash guard. Lower the car.
Disconnect the sensor cable connector.
Remove the upper timing belt cover.

Removing the thermostat

Remove

-

the upper timing belt cover

-

the auxiliaries belt.

Remove the delivery pipe from the power steering pump.

Note! Put paper under the generator (GEN) to avoid oil spillage.

Remove:

-

the servo pump

-

the connector from the sensor

-

the thermostat housing from the cylinder head.

Replacing the thermostat

Remove the cover and the thermostat.
Install a new thermostat with a new gasket.

Note! Ensure that the thermostat is positioned correctly in the thermostat housing.

Installing the thermostat

Caution! For tightening torques not in the text, see Tightening torque See: Engine/Specifications/Mechanical Specifications/Tightening Torque.

Install:

Engine, Cooling and Exhaust > Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Service and Repair > Engine Temperature Sensor > Page 3246

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