What is the problem that the engine has been shaking unsteadily after the throttle is cleaned?

It is best to do computer matching when cleaning the throttle valve. At this time, the computer is based on some relevant data of the throttle valve before cleaning. If it does not match, it may cause problems such as jitter and increased fuel consumption. Because the computer has a memory function, it has adapted to the state of the throttle before cleaning. After cleaning, the change of throttle opening (even small) is directly transmitted to the computer, and there are two signals. Common phenomena are high and low idle speed or high idle speed, so it is recommended to use detection computer to match.