B48 After washing the throttle, the engine loses power?

Cleaning has nothing to do with power failure. If an electronic throttle is used, the computer will open the throttle valve plate to an appropriate angle to let the air flow and stabilize a certain speed. If there is carbon deposit, the opening angle will automatically increase. There is no carbon deposit after cleaning. Some cars have memory function and will not return to the initial position and idle speed.

Will be high or unstable. In this case, special equipment should be used for initialization. If there are no conditions, you should get used to it after driving a certain mileage.