9000 L4-1985cc 2.0L DOHC Turbo EFI (1987)
Coolant Temperature Sensor/Switch (For Computer): Description and Operation
Temperature sensor
Description
The temperature sensor supplies the control module continuously with engine temperature information.
The engine coolant temperature sensor consists of a brass body containing a resistor of NTG (Negative Temperature coefficient) type, i.e. its
resistance decreases with increasing temperature.
When starting from cold and during the warm-up period, the engine requires a much richer fuel-air mixture on account of condensation losses in
combustion chambers and the intake manifold.
As engine temperature rises, the amount of fuel injected decreases successively.
