What will happen if the throttle valve is broken?

The faults that will occur when the throttle valve is broken are: the engine idle speed is unstable, the high idle speed drops discontinuously, and the engine is difficult to start, especially the cold start; The engine has insufficient power, poor acceleration performance and unstable operation; The exhaust pipe of the car emits black smoke, which increases fuel consumption. Throttle is a controllable valve that controls air to enter the engine. There are two kinds: traditional cable throttle and electronic throttle. After the gas enters the intake pipe, it will be mixed with gasoline to form a combustible mixture, which will be burned to do work. It is called the throat of an automobile engine, which is connected with the air filter and the engine block. Whether the acceleration of a car is flexible or not is related to the cleanliness of the throttle.