Temperature sensor
Product number:
251966
water temperature - fitted to RH water pipe
Product Information "Temperature sensor"
Jaguar: XJS 5.3 V12 from engine no. 8S64245 to VIN...188104 (1988-93)
water temperature - fitted to RH water pipe
The water temperature sensor provides a "minor" trim to the fuel schedules.
One of the connectors should give ~2.4 volts with the ignition on and the engine cold (the other one gives 0 volts) and gradually decrease to ~0.95 volts at normal operating temperature. Sudden changes in voltage mean the sensor is breaking up.