coolant temp sensor,does just what it says,it relays your coolant temp to gauges!
There is possibly a light sensor if it has auto headlamps. or a temp sensor for climate control
The engine coolant temp (ECT) sensor monitors the engine temp and sends that info to the engine control module (ECM). The ECM takes in info from many sensors including the ECT to determine the correct air/fuel ratio for the conditions. So to answer your question, yes. The ECT sensor does play a part in fuel control.
Usually right above your temperature control on your dash
The temp sensor for the ECM (engine control module) is next to the thermostat housing.
do you mean intake air temp sensor, or iac idle air control?
There is usually an ECT (engine coolant temp) sensor and a CTS (coolant temp sensor) located around the thermostat housing mounted in the intake. One sends coolant temp to the guage, the other sends temp to computer.
Check the temp sensor. The control is not turning on the fan when engine temp requires it, so the most common cause is the sensor.
Replace the temp sensor. The ECM doesn't know the engine is cold if the temp sensor is bad. You could also check out the throttle position sensor (TPS) and the Idle control servo (ICS).
That is the air temp in the air inlet for the engine. It let the CDI control module know the incoming air temp.
temp sensor
Coolant Temp Sensor