E 150 1/2 Ton Van V6-4.2L VIN 2 (1997)
Idle Speed/Throttle Actuator - Electronic: Description and Operation
Purpose
The Idle Air Control (IAC) valve is used to control engine idle speed and dashpot functions.
Operation
The idle air control valve allows air to bypass the throttle plate. The amount of air allowed to bypass the throttle plate, will be determined by the PCM
and be controlled by a duty cycle signal.
CAUTION: Cleaning the IAC valve is NOT recommended. The use of solvents may damage the IAC valve.
