The Avanza idle valve is an essential part of the Toyota Avanza’s engine management system. Designed specifically for models with the 1.5L 3SZ engine from 2006 to 2011, this Avanza idle valve helps maintain a stable idle by controlling airflow when the throttle is closed. Proper functioning of the idle valve ensures smooth engine operation, reducing stalling and improving fuel efficiency. If your vehicle experiences rough idling or engine stalls, replacing the Avanza idle valve could be the solution to restore optimal performance.