Why Does the Car Shock Absorber Make a Squeaking Noise?
2 Answers
The reasons for a car shock absorber making a squeaking noise are as follows: 1. Oil leakage: Oil leakage can prevent the shock absorber from functioning properly. 2. Component damage: If no oil leakage is found upon inspection, check whether components such as the shock absorber connecting pin, connecting rod, connecting hole, and rubber bushing are damaged, desoldered, cracked, or fallen off. If the above checks are normal, further disassemble the shock absorber to check whether the fit clearance between the piston and the cylinder is too large, whether the cylinder is scratched, whether the valve seal is good, whether the valve disc and valve seat fit tightly, and whether the shock absorber's extension spring is too soft or broken. Finally, repair or replace parts as needed based on the situation. 3. Other reasons: If the shock absorber is found to make noise, it is mainly due to the shock absorber colliding with the leaf spring, frame, or axle, damage or loss of rubber pads, deformation of the shock absorber dust cover, insufficient oil, and other reasons.
I've been driving for over twenty years and have encountered squeaky shock absorbers before. The sound was just like an old wooden door creaking, really annoying. I think the possible reasons could be the rubber bushings of the shock absorbers aging or lacking lubrication—over time, they dry out and crack, causing friction noises when going over bumps. Another possibility is a torn dust cover, allowing sand and debris to get in and jam the ball joint, making the suspension movement less smooth. I remember that time I thought it was a minor issue and delayed fixing it, but then the steering wheel started shaking while driving, and the car felt unstable during high-speed cornering—it was quite dangerous. Later, when I took it to the shop for inspection, they found the shock absorber core was damaged and needed replacement. It cost a bit, but it gave me much more peace of mind. So, I suggest you get it checked by a professional shop as soon as you hear such noises. The mechanics will inspect whether the suspension components are loose or worn, and timely action can prevent bigger problems. During regular maintenance, you can also pay attention to cleaning debris from the undercarriage to avoid buildup causing friction.
