PL720 4WD L4-2389cc 2.4L SOHC (Z24) (1983)
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Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Water temperature sensor graph.
A water temperature sensor, threaded into the intake manifold water jacket, monitors changes in water temperature and transmits a corresponding
signal to the ECC control unit. The sensor houses a thermistor whose resistance decreases in response to a rise in temperature.