What's the impact of the broken throttle on the vehicle?

Impact of throttle damage on vehicles: 1, engine idling is unstable, high speed does not continue to decline, and it is difficult to start the engine, especially cold start; 2, the engine idle speed is unstable or no idle speed, the engine is difficult to start, the engine power is insufficient, the acceleration performance is poor, and the operation is unstable; 3. For the cleaned throttle, the engine fault indicator is on. I went to the repair shop to check and found that the throttle had not been cleaned for a long time.