Unfinished problem with computer matching.
After cleaning the intake valve of the vehicle, the flap still moves according to the original formation, which is equivalent to not closing in place, but the difference is that the carbon deposits have been cleaned away. Therefore, the air intake volume will be more than normal. Causes high idle speed. In this case, computer programming is required. If you don't do this, it will take a long time for the engine computer to adjust and recover.