After Jetta cleaned the throttle, the power weakened.

Do not match according to the regulations after washing. The car needs to be heated to a water temperature above 80 degrees. Battery voltage is normal. No big appliances can work. Engines can only be matched without fault codes. There is also whether the throttle valve is installed correctly, whether the gasket is damaged, and whether the pipeline falls off. It is necessary to check and inspect the car. Ask the car master. 4S shop professional technician, 10 minutes to solve.