Electronic Idle Speed Control: Description

All California and Turbo models are equipped with an electronic idle speed control system which maintains a constant idle speed under all conditions. The control unit monitors engine speed and actuates an air control valve which by-passes the throttle valve and allows extra air to the engine. This air supply is varied to maintain idle speed. The system includes the control unit, air control valve, throttle switch, coolant sensor, and connecting wiring and hoses.