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volvo Workshop Repair Guides


XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Service and Repair > Engine Coolant Temperature (ECT) Sensor, Replacing > Page 1872

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Secure the thermostat housing in a vise. Remove the sensor.

Note! Handle the thermostat housing carefully when securing it in the vise.

Installing the temperature sensor

Note! For tightening torques, see Specifications, B6324S See: Engine, Cooling and Exhaust/Engine/Specifications/Mechanical
Specifications/Tightening Torque.

Clean the thermostat housing mating surfaces. Ensure that there is no dirt left in the thermostat housing.

Install

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the new sensor. Use a new gasket. Tighten to 20 Nm. Ensure that the sensor cable is correctly routed in the thermostat housing and in the cable
duct

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the thermostat housing using a new gasket. Tighten to 17 Nm

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the screw for the cable duct. Tighten to 10 Nm

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the variable valve timing solenoids. Tighten to 10 Nm

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the front timing belt cover. See Timing cover front, replacing See: Engine, Cooling and Exhaust/Engine/Timing Components/Timing
Cover/Service and Repair. The mudguard over the right drive shaft boot may come loose. If this happens, secure it from underneath

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the screw for the front timing belt cover. Tighten to 12 Nm

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the servo reservoir. Check that the hoses are correctly positioned

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the upper timing belt cover.

Install the plastic hoses between the turbocharger (TC) and the charge air cooler and between the air cleaner (ACL) and the turbocharger (TC).
Install the crankcase ventilation pipe on the intake manifold.
Tighten all hose clamps.

Install

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the engine stabilizer brace. Tighten to 50 Nm

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the torque rod on the bracket on the engine. Tighten to 80 Nm

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the clamp holding the return hose for the power steering.

Function test

Fill with coolant.
Install the cap on the expansion tank.

Sensors and Switches > Sensors and Switches - Cooling System > Engine - Coolant Temperature Sensor/Switch > Coolant Temperature Sensor/Switch (For Computer) > Component Information > Service and Repair > Engine Coolant Temperature (ECT) Sensor, Replacing > Page 1872

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