Coolant Temperature Sensor/Switch (For Computer): Service and Repair
Temperature sensor1 Remove the clips for the crankcase ventilation hose from the camshaft cover.
2 Remove the fuel pressure regulator complete with bracket from the cylinder head.
3 Unplug the temperature sensor connector.
4 Drain off about 4 liters of coolant so that it will not run out of the aperture when the temperature sensor is removed.
5 Unscrew the temperature sensor and remove it, using a 3/4" drive long socket.
Before refitting, thoroughly clean the mating surfaces and temperature sensor.
Also check the condition of the copper washer. Fit in reverse order.
Temperature sensor tightening torque: 20 Nm (14.8 lbs ft).
Note: Do not forget to reconnect the ground leads for the LH injection system at the point where the fuel pressure regulator is fastened to the cylinder head.