SENSOR-INTAKE AIR TEMPERATURE
DESCRIPTION
The intake air temperature sensor (1) is located before the air flow control valve in the rear of the air inlet tube. The intake air temperature sensor (1) measures the temperature of the air as it is supplied to the cylinders and transmits the value to the ECM. This is required in order to determine the density of the air being supplied for the combustion process. The value range is from minus 40°F up to 302°F (minus 40°C to 150°C).
OPERATION
The Negative Temperature Coefficient (NTC) resister located within the intake air temperature sensor alters it's resistance in line with the charge air temperature. If the engine is cold, the value equals ambient temperature. For a temperature of 68°F (20°C) the resistance is approximately 6000 ohms. For a temperature of 104°F (40°C) the resistance is approximately 3300 ohms.
REMOVAL
1. Disconnect the negative battery cable.
2. Unplug the wiring harness connector at the intake air temperature sensor (1).
3. Press together the sensor locking arms and remove the sensor (1) from the air control valve extention (3).
INSTALLATION
1. Position the intake air temperature sensor along side of the air control valve extention (3) access hole.
2. Press together the sensor (1) locking tabs, seat the sensor (1) to the extention (3) and release tabs .
3. Connect negative battery cable.