What is the cause of idle jitter in Mitsubishi Lan Se?

Reasons for idling jitter of Mitsubishi Lan Se: 1. The most common reason is that the throttle valve is dirty or invalid, which will lead to idle jitter. The main reason of dirty throttle is that there is carbon deposit at the joint between throttle valve plate shaft and throttle body, which leads to inaccurate throttle opening, so the idle speed will shake; 2, so we can clean the throttle first. If it doesn't shake after cleaning, it means the throttle is dirty; 3. If it still shakes after cleaning, it may be that the throttle assembly is damaged and the throttle needs to be replaced. Always remind, because all vehicles now use electronic throttle, you need to learn idle speed again after cleaning the throttle.