Coolant Temperature Sensor/Switch (For Computer): Service and Repair

Engine Coolant Temperature (ECT) Sensor

Removal

WARNING: Never remove the coolant pressure cap under any circumstances while the engine is operating. Failure to follow this instruction may result in personal injury.

WARNING: To avoid having scalding hot coolant or steam blowing out of the cooling system, use extreme care when removing the coolant pressure cap from a hot cooling system. Wait until the engine has cooled, then wrap a thick cloth around the coolant pressure cap and turn it slowly until the pressure begins to release. Step back while the pressure is released from the system. When certain all the pressure has been released (still with a cloth) turn and remove the coolant pressure cap from the coolant expansion tank. Failure to follow these instructions may result in personal injury.
1 Disconnect the battery ground cable. For additional information, refer to Battery Disconnect and Connect Battery Disconnect and Connect
2
WARNING: Make sure to support the vehicle with axle stands.
Raise and support the vehicle.
3 Drain the cooling system. For additional information, refer to Cooling System Draining, Filling and Bleeding Service and Repair
4 Remove the throttle body. For additional information, refer to Throttle Body Service and Repair




5 Remove the engine coolant temperature (ECT) sensor.
- Remove the retaining clip.
- Remove and discard the O-rings.

Installation





1 Install is the reverse of removal.
- Fill the cooling system up to the MAX mark on the coolant expansion tank using a fifty percent mixture of Jaguar Premium Cooling System Fluid or equivalent, meeting Jaguar specification WSS M97B44-D and fifty percent water.