Idle Speed Control Units A compact electronic module that manages engine idle speed to keep RPM stable as loads and conditions change. Function: Maintains precise idle by adjusting signals based on RPM and load data, improving drivability and reducing stalling. Compatibility: Designed for a wide range of gasoline engines and common engine management configurations. Works with standard harnesses. Check compatibility with your ECU or vehicle manual. Size and material: Small form factor with a rugged aluminum housing and sealed connectors for automotive use. Performance: Fast accurate idle control. Smooth transitions when electrical loads shift. Reliable operation across temperature ranges. Use scenarios: Restoring a classic car with updated electronics. Tuning with aftermarket ECUs or added performance parts. Vehicles with heavy electrical loads such as air conditioning and electric fans that cause idle fluctuation.