What's the impact on the car if the accelerator is broken?

Because the accelerator is broken, the car will have the following series of problems: 1. Engine idle speed is unstable, even if it continues to be high, it will not drop. At the same time, it is difficult to start the engine, especially the cold start. 2. Engine idle speed is unstable or there is no idle speed. It is difficult to start the engine. 4. The engine has insufficient power, poor acceleration performance and unstable operation. 5. The exhaust pipe of the car emits black smoke, which increases fuel consumption.