Shadow Convertible L4-153 2.5L SOHC (1994)
Idle Speed/Throttle Actuator - Electronic: Description and Operation
Throttle Body View With Idle Air Control (IAC) Motor
LOCATION
Mounted on throttle body.
PURPOSE
Maintains optimum idle speed under varying engine loads.
Prevents deceleration die out.
OPERATION
Powertrain Control Module (PCM) calculates proper idle speed using information from throttle position, vehicle speed, and coolant temperature
sensors and brake, and neutral/safety switches.
PCM controls idle speed by actuating motor, varying air flow through bypass in throttle body.
Prevents decel die out by increasing air flow when throttle is closed suddenly.
