Electronic Idle Speed Control: Operation: Notes

The idle speed control system controls a variable air bleed into the intake system. Idle speed is maintained by increasing or decreasing the air, which is injected through an insulating sleeve around each fuel injector.

A constant 750 RPM is maintained when engine coolant is below 107°F (40°C), and a 500 RPM idle is maintained when engine coolant is above this temperature. System components operate as follows: