Turismo L4-105 1720cc 1.7L VIN B 2-bbl (1983)
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Coolant Temperature Switch
Fig. 3A Coolant Switch location 4-105L engine
On four cylinder engines the coolant switch, Fig. 3A, is located on the thermostat housing. It supplies a signal to the computer when the engine
coolant temperature is below 150°F. This information is required to prevent a change in air fuel ratio until engine operating temperature is reached.