Is the throttle opening 12% normal at idle speed?

When the owner found that the car was idling, the throttle opening reached 12%. Is this normal? Abnormal throttle opening 12% at idle speed. When idling, the throttle opening is generally 2%~5%, and the opening reaches 12%, which is much higher than the general value, indicating that the throttle and intake pipe need to be cleaned. If the throttle valve is not cleaned for a long time, it will lead to idling, increased fuel consumption, insufficient power and even instability. Throttle plays an important role in automobile. The use of throttle can make full use of fuel, reduce emission pollution and protect the environment. Therefore, we need to clean the throttle in time and check it regularly when necessary to prevent problems before they happen. We can judge whether it is necessary to clean the throttle by the opening of the car when it is idling. Once it is found that it greatly exceeds the general value, it is necessary to clean the throttle valve in time.