Intake Air Temperature (IAT) Sensor

DESCRIPTION
Provides the electronic fuel injection system with mixture (fuel and air) temperature information. The intake air temperature sensor is used both to correct density for airflow calculation and to proportion the cold enrichment fuel flow. This sensor is similar in construction to the engine coolant temperature sensor, except it is packaged to improve sensor response time. The sensor is threaded into a cylinder runner of the intake manifold or mounted in the engine air cleaner assembly. The intake air temperature sensor is used in determining EPC pressure.

SYMPTOMS
Incorrect EPC pressure either high or low will result in either harsh or soft shifts.

DIAGNOSTIC TROUBLE CODES
P0116, P0117, P0118