What Causes Shock Absorber Noise?
2 Answers
Car shock absorber noise is caused by several factors: leakage or bending of the shock absorber itself; abnormal aging or wear of the shock absorber pressure bearing; deformation of the shock absorber spring; or noise from the wheel bearings. Function of Shock Absorbers: Shock absorbers are used to dampen the oscillation of the spring after absorbing shocks and impacts from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the frame and body, thereby improving the smoothness of the ride. Solutions for Car Shock Absorber Noise: Replace the Shock Absorber: If the noise is caused by leakage or bending of the shock absorber, replacing it with a new one can resolve the issue. Add Lubricant: If the noise is due to abnormal aging or wear of the shock absorber pressure bearing, replacing or lubricating it can solve the problem. Replace the Shock Absorber Spring: If the noise is caused by deformation of the shock absorber spring, replacing it with a new one can fix the issue. Replace the Bearing: If the noise originates from the wheel bearings, replacing them is necessary.
My old car has been making a thumping noise from the chassis when going over speed bumps recently. After a thorough inspection at the repair shop, it turned out to be a leaking shock absorber. The mechanic explained that when the oil in the shock cylinder leaks out, the piston works dry, which naturally causes noise. Another common issue is the aging of the top mount (the rubber ring at the top of the shock absorber), which hardens and cracks after five or six years, producing squeaky noises when going over bumps. Additionally, worn-out stabilizer bar bushings can cause metal clanging sounds. The most serious problem is spring fatigue and deformation, which keeps the shock absorber in an abnormal state. These abnormal noises are not only annoying but also accelerate tire wear. I recommend getting them checked and replaced as soon as possible.
