After clearing the throttle, the idle speed of Li Xia n5 suddenly jumped, and after refueling the door, it became better to return to idle speed.

Hello. There are several reasons for this.

After the first throttle valve was cleaned, there was no computer matching.

The second reason is that the throttle interface pad is damaged or improperly positioned to leak air.

The third reason is that the cleaning agent enters the spark plug during the throttle cleaning process, resulting in short circuit.

I hope I can help you. Have a nice trip! If there is something wrong with your car, ask the car mechanic. 4S shop professional technician, 10 minutes to solve.