How to judge the throttle damage?

The method for judging the damage of the throttle valve is as follows: 1. If the throttle valve is damaged, the EPC light on the instrument will light up. This indicates that there is something wrong with the electronic throttle control system. 2. Measure the throttle opening with a diagnostic instrument to see if it is within the normal range. If the throttle angle is still too large after cleaning the throttle, you need to replace the throttle. 3, the car cold car is not easy to start, the idle speed is unstable, and black smoke is emitted. The information about the throttle valve is as follows: 1. Throttle is a controllable valve to control air to enter the engine, and there are two kinds of traditional cable and electronic throttle. 2. The traditional engine throttle control mechanism works through a cable (soft steel wire) or a pull rod, one end of which is connected with the throttle pedal and the other end is connected with the throttle linkage plate; The electronic throttle mainly uses the throttle position sensor to control the throttle opening according to the energy required by the engine, so as to adjust the intake air.