Feng Fan idling, I tightened the hexagonal throttle. Is there a problem?

Hello, I suggest that this screw should not be moved. Just wipe the throttle clean. The computer stores the initial position to ensure the normal idle speed of the mine. When the screws are tightened, the computer will think that there is something wrong with the loaded car to improve the idle speed and ask the car master. 4S shop professional technician, 10 minutes to solve.