Fox cleaned the throttle and injector, and cleaned up the carbon deposit in the engine. The idle pointer is still shaking and there is a sound. What's the matter with turning it off?

Generally, if the throttle is cleaned, the idle speed of the car will be unstable for a while, so it will be fine to drive for a while. If you clean these items to solve the problem of unstable idle speed, it is proved that the unstable idle speed is not caused by carbon deposition, but is generally caused by the wrong fuel+air ratio. Then check the problem from the aspects of oil path and gas path, and then check the oxygen sensor. Check the circuit with the computer first. Generally, this phenomenon occurs, and computers will have fault codes.