What is the cause of wiper jitter?

Generally can be divided into the following situations:

The contact surface between the wiper and the glass is unreasonable. Some rubber strips are strongly pressed on the surface, while others are slightly stressed. When the wiper moves, the force will be uneven, and the result is that some parts of the wiper shake.

There are foreign objects on the surface of the wiper or glass, and the wiper resistance increases obviously when it is scraped to some positions, resulting in jitter.

Solution:

The general reason of Buick Hideo idling jitter is that the throttle valve is too dirty or the fuel injector has too much carbon deposit. In addition, check the working conditions of spark plugs, high-voltage lines and ignition coils. Poor ignition system and poor spark plug misfire can also lead to such failures. The solution is to check whether there is too much carbon in the spark plug and replace the spark plug.

Abnormal sound of Geely Job's wiper: According to the owner's sharing, the cause of abnormal sound of central control may be caused by plastic friction between windshield and wiper. The solution is simple, just press the position shown in the figure below. When the rain-sensing wiper used by Job works, the relay will make a "snapping" sound when the action is yes. It is normal for relay products to have this kind of sound when working.