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Idle air control valve explaine-sinhala

The idle air control (IAC) valve is located on the throttle body of fuel-injected engines, where it works with the vehicle's ECU to electrically regulate airflow to the engine to ensure smooth idling. The symptoms of a bad idle air control valve are an illuminated check engine light, stalling, wrong idle speed, and the rare instance of the engine failing to start. You can test the idle air control valve with an OEM-level scan tool to determine if the engine part has failed