Why does the car shock absorber squeak? What is the reason for the abnormal noise of the car shock absorber?

Shock absorbers are important components that ensure the ride comfort and smoothness of a car. They are usually installed on the car suspension system. When driving, you may sometimes hear the shock absorber making a squeaking noise. For the sake of ride comfort and car performance, it is better to troubleshoot the fault in time. So what is the reason for the squeaking shock absorber? What is the sound of the shock absorber noise in general?

Why does the car shock absorber squeak?

The squeaking sound of the shock absorber during driving is caused by the damage of the shock absorber. For old cars, it is an aging problem. For new cars, it is because they do not slow down when encountering rugged roads, but rush forward bravely. One hundred touches will cause damage, air leakage, squeaking, and abnormal noise reports. It is annoying to hear! The treatment method for new cars is to wipe the top rubber sleeve, the lower screw fastening place, the shock absorber spring and the spring bottom support, and the hydraulic rod with brake fluid to eliminate or reduce the abnormal noise.

Abnormal noise in shock absorbers is generally caused by long-term driving and aging, mainly due to strong collision between the shock absorber and the leaf spring, frame rubber buffer sleeve and shock absorber hydraulic rod, which causes the rubber pad to be damaged, oil and air leakage, excessive resistance of the damper during movement, loss of buffering function, damage or aging of the balance bar ball head, lifting ear, and support arm rubber sleeve rubber parts, damage or falling off of the buffer sleeve, mud sticking to the hydraulic rod during driving, wear and oil leakage, reducing the shock absorber hydraulic oil and causing poor fluidity, resulting in squeaking noises, insufficient shock absorbing force, and large fluctuations during driving, which will damage the vehicle, increase fuel consumption, and finally replace the shock absorber.

What is the abnormal noise of automobile shock absorber?

A common abnormal noise of the shock absorber is the "dong dong" abnormal noise, which is mainly caused by the internal pressure relief of the shock absorber. But we cannot see the oil leakage from the outside. There are three characteristics of the failure phenomenon: first, it is easy to produce on gravel roads; second, there is no sound on bumpy roads; third, the sound changes with the speed of the vehicle. When the speed is greater than 60 yards, the sound is difficult to hear. The sound of internal pressure relief of the shock absorber is similar to the sound of beating a drum, which is relatively dull "dong dong dong". This kind of abnormal noise can only be solved by replacing the shock absorber core, and the spring does not need to be replaced.

Another abnormal noise of the shock absorber is the abnormal noise of the top glue, that is, the abnormal noise of the components fixing the screws on the upper part of the shock absorber. Some of the noises are "click-click" when turning the steering wheel in place or at low speed, and there is no such sound when the straight line is displayed. Some "creak-creak" noises appear when passing speed bumps or potholes. But there is no such sound when driving on cement roads. Some "hum-hum" noises are made when turning the steering wheel, which sounds like it is in the cab, but it is indeed made by the shock absorber. These noises are all abnormal noises. The main fault is the steering damping bearing or plane bearing problem in the top glue of the shock absorber.

The shock absorber spring sometimes makes unusual noises, but they are caused by damage to other parts and are not a problem in themselves. There is another sound that we need to be cautious about, which is a sound similar to deflation when passing over a speed bump. This is the normal compression sound of the hydraulic pressure inside the shock absorber. Sometimes it is there and sometimes it is not. Many people will replace the shock absorber as a fault.

How to solve the noise of shock absorber

Generally, "squeaking" does not necessarily mean a shock absorber failure, but it may be caused by the shock absorber accessories, such as: friction between the buffer block and the shock absorber column, uneven contact of the shock absorber spring, aging and hardening of the shock absorber top glue, etc.

The chassis and suspension of a car are all connected. Abnormal noise in any position will affect other parts and make you feel that it is the shock absorbing part. Here are some parts that are prone to squeaking, namely: parallel rod rubber sleeve, lower arm rubber sleeve, lower arm ball head, and steering gear ball head.

The simplest way to check is to spray a little engine oil at these locations in turn. If there is no abnormal noise at the beginning, it proves that the problem is here and you can perform appropriate maintenance.

Why does the car shock absorber squeak? What is the reason for the abnormal noise of the car shock absorber?