After cleaning the throttle, the idle speed is too high to reach 2000-3000.

Your car's engine technology should be similar to Toyota 8A. Idle speed control can be controlled by rotating solenoid valve and bimetallic spring. There should be two rubber hoses on the throttle body, just like the cooling system. After starting, with the increase of engine temperature, the spring stiffness will increase, and the idle bypass channel of the throttle will be turned down to reduce the idle speed after the engine is warmed up.

1. Would you please check whether the throttle is completely closed at idle speed? When the intake pipe in front of the throttle is removed, it can be seen that the throttle cable should be completely relaxed when idling, and the throttle cannot be opened.

2. If it doesn't work, check the sealing conditions of the air inlet and all gaskets.