XC90 2.5T AWD L5-2.5L Turbo VIN 59 B5254T2 (2003)
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:
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the upper timing belt cover
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cable from the sensor
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the sensor from the thermostat housing. Use socket 951 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:
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the sensor with a new seal
-
Tighten to 22 Nm, use socket 951 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:
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the servo pump
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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:
