How to judge whether it is necessary to clean the throttle?

The method for judging whether it is necessary to clean the throttle valve is: 1. When the car is cold, stepping on the accelerator gives you a feeling of unsmooth and unsmooth. 2. The feeling that the accelerator door accelerates slowly when driving. Matters needing attention in valve cleaning are: 1. Do not let the gas fall or be hit when cleaning; 2. Before installing the cable system, it is forbidden to suddenly release the cyclone frame; 3. After replacing or cleaning the throttle, it is necessary to re-match the throttle with the electronic control unit, so that the electronic control unit can know the basic characteristic parameters of the throttle, and the control unit can automatically adjust the action of the throttle to realize synchronous operation at work.