What should I do if the idle speed of the cleaning throttle is unstable?

After the throttle valves of American and Japanese engines are cleaned, there is no need to re-match, just disconnect the negative battery 1 min, so that the control unit loses its remaining memory and returns to normal. The Fiat Auto system turns the ignition switch to the 0N position, stays at 1 10s, turns off the ignition switch, and then turns on the ignition switch again to start the engine, thus completing the adaptation of the throttle position sensor. Engine started more than 12 times. Don't start every time. Shut down immediately after startup. Jetta's throttle position sensor can also be set. After the throttle valve is cleaned, the most direct performance of not re-matching is that there will be high idle speed and idle speed self-acceleration, and some engines will accelerate to 1500r/min or even higher, with high fuel consumption during acceleration, excessive emissions and black smoke from the exhaust pipe.