What is the reason for the jitter of idle steering wheel?

Problems with the ignition system can cause one or more cylinders not to work, which can also lead to idling jitter. Check whether the ignition module is normal. Engine carbon deposition is serious, the most common thing is that the throttle valve is dirty or the throttle valve fails, which will lead to idling 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. You can clean the throttle first. If it doesn't shake after cleaning, it means the throttle is dirty. If it still shakes after cleaning, it may indicate that the throttle assembly is damaged and the valve needs to be replaced. As a reminder, since all vehicles now use electronic throttle, it is necessary to readjust the idle speed after cleaning the throttle. It may be caused by the aging or damage of the rubber parts inside the engine bracket and the gearbox bracket, because the engine will shake slightly when working, which can be absorbed by the rubber parts inside the engine bracket and the gearbox bracket. If this rubber part is aged, it can't absorb the jitter, so the jitter will be transmitted to the starting board. If the oil supply pressure of the oil pump is abnormal, or the value of the intake pressure sensor is wrong and the work is not good, the body will shake. Poor oil quality leads to poor atomization effect of the nozzle and insufficient combustion of the mixture in the cylinder, so there will be jitter.

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