A/C Idle-Up System
The A/C idle-up system provides a stable idle speed when A/C is operating. Engine Control Module (ECM) controls A/C idle-up valve which allows extra intake air to by-pass throttle valve for increased idle speed. The A/C idle-up valve is located in different locations. See A/C IDLE-UP VALVE LOCATIONS table. See Fig. 1.
A/C IDLE-UP VALVE LOCATIONS
4-Cyl. 2.4LCenter Of Valve Cover & Contains 2-Pin Gray Connector
Auxiliary Air Valve
Auxiliary air valve provides additional air to intake manifold when engine is cold for increased idle speed. Auxiliary air valve is mounted on throttle body and determines engine temperature by engine coolant being routed around auxiliary air valve.
NOTE:Idle speed control system may also be referred to as idle air control system.
Throttle Opener (A/T)
Throttle opener, mounted on throttle body, is vacuum controlled and allows engine to return to specified RPM after throttle is released.
Wednesday, March 17th, 2010 AT 5:51 AM