What Causes Abnormal Noise in Car Shock Absorbers?

[LaJosephine]

Abnormal noise in car shock absorbers can be caused by the following reasons: Shock absorber oil leakage: Noise caused by oil leakage or bending of the shock absorber itself. In this case, replacing the shock absorber with a new one can solve the problem. Aging of shock absorber pressure bearing: Abnormal noise due to aging or wear of the shock absorber pressure bearing. This can be resolved by replacing or lubricating the bearing. Deformation of shock absorber spring: The noise might be caused by deformation of the shock absorber spring. Replacing the spring with a new one can fix the issue. Noise from wheel bearing: It could also be noise coming from the wheel bearing, which would require replacing the wheel bearing.

[VanAmy]

Last time my car went over a speed bump, I heard a creaking sound. Later, I found out it was due to the aging of the shock absorber top mount. Rubber tends to harden and crack over time, and when the weight of the car presses down on it, it produces strange noises. If you hear a metallic clunk when going over potholes, it's likely that the shock absorber piston is gone, with the hydraulic oil leaking out, resulting in no damping effect. Another scenario is a 'clunk clunk' sound, which might be caused by loose shock absorber mounting bolts or deformed shock absorber springs. This issue shouldn't be ignored—not only is it annoying to hear, but it can also lead to loss of control during emergency lane changes.

[DelLillian]

My car's shock absorbers started making noise after five years, especially when cold in winter. The mechanic told me there are three common issues: if the top mount's thrust bearing is worn, it makes a 'squeaky' sound; if the stabilizer link's ball joint is loose, it sounds like hitting a broken gong on rough roads; the most troublesome is when the shock absorber leaks oil, causing the car body to bounce up and down continuously. He suggested pressing down on each corner of the car when possible - normally the body should bounce no more than twice after releasing, if it bounces several times, it's time for replacement.

[StEsther]

Identifying strange noises requires listening and locating. A dull thudding sound may indicate a damaged seal in the shock absorber, while metallic clanking noises should prompt a focus on suspension links. A clunking noise when turning the steering wheel calls for an inspection of the strut bearing. Last week, while helping a friend check his car, I discovered that the dust cover on his shock absorber was torn, allowing dirt to enter the shock tube, which had even worn grooves into the piston rod. In such cases, the entire unit must be replaced—simply changing the dust cover won't suffice. By the way, cars modified with lowering springs are particularly prone to damaging shock absorbers—this is all from hands-on experience.

[StBraxton]

There are typically three causes for shock absorber issues: rubber component aging accounts for 60%, damage from bumpy roads makes up 30%, and the remaining cases are due to dust cover breakage allowing sand ingress. The most extreme case I've seen was a shock leaking oil so badly it sprayed the inner side of the tire black. If you notice abnormal noises, get it checked immediately - prolonged neglect can affect other chassis components. For instance, failed shocks cause excessive spring compression, which over time can even lead to premature wear of lower control arm bushings.

[Angela]

For vehicles with over 100,000 kilometers, special attention should be paid to shock absorber health. My old car had abnormal noises last time, which turned out to be reduced support from the suspension springs, altering the shock absorber's working stroke. Another friend's car made a 'thudding' sound, and the inspection revealed deformation at the shock absorber's mounting top. Remember, when replacing shock absorbers, a four-wheel alignment is a must; otherwise, misalignment and uneven tire wear will cost more. Driving habits are also crucial—those who don't slow down for speed bumps will definitely wear out their shock absorbers faster.