What is the reason why Cruz's throttle is stuck?

14 cruze, the manual throttle valve is stuck, so it is necessary to check the throttle valve with a diagnostic instrument. Observing the specific data flow, the throttle opening is large and needs to be cleaned in time. When there is no permanent fault, there is no need to replace it. If there is a permanent fault, it must be replaced. Because the throttle cannot be disassembled for maintenance, the assembly should be replaced. It should be noted that the automobile throttle needs to be cleaned regularly, and normal cleaning can make the engine work normally. However, the cleaning must be controlled, and excessive cleaning will easily affect the life of the throttle. Repeated cleaning of the throttle is easy to remove the special coating inside the throttle, which makes it more greasy and leads to a vicious circle, and finally the throttle is scrapped.