What's wrong with Buick Hideo's throttle not returning?

Throttle carbon deposit, throttle spring damage, throttle sensor problem. According to the inquiry, official website, the automobile master, showed that.

1. Throttle carbon deposit: After long-term use, the carbon deposit in the engine will cause the throttle to get stuck or stuck, making it unable to return to its normal position.

2. The throttle spring is damaged: the return of the throttle is completed by the spring. If the spring is damaged or loose, the throttle will not recover.

3. Throttle sensor problem: The throttle position sensor is responsible for monitoring the position and action of the throttle. Sensor failure or inaccurate calibration will cause the throttle not to return.