What should I do if the idle speed is high after cleaning the throttle?

First, because there will be impurities in the intake process, these impurities will accumulate at the throttle for a long time, and the carbon deposition will be more and more after a long time. When the throttle valve reciprocates, it will be resisted. If this situation persists for a long time, the engine computer will adjust the position of the accelerator pedal. That is to say, taking the position of carbon deposit as the body is equivalent to the fact that the throttle valve is not in place at all.