Sundance L4-135 2.2L SOHC (1987)
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Engine Coolant Temperature Sensor Description
W/ ESC
The coolant sensor, located on the thermostat housing, gives the computer information on engine temperature. A signal is supplied to the computer
which will cause the spark plugs to fire at a fixed amount of advance during cranking only. Amount of advance is determined by the position of the start
pick-up coil. The run pick-up coil functions the same except that its signal is not recognized during engine cranking.
With SMEC/SBEC
The coolant temperature sensor, mounted near the thermostat housing, monitors coolant temperature and provides engine operating temperature data
to the SMEC or SBEC. The sensor, which is a variable resistor, is also used to turn on the radiator fan.
