What Causes the Noise from the Right Front Shock Absorber on Bumpy Roads?
2 Answers
The noise from the right front shock absorber on bumpy roads is caused by the shock absorber's top bearing or the stabilizer bar. Noise from the shock absorber's top bearing: If a clicking sound is heard when lightly shaking the steering wheel while stationary, it is likely due to insufficient lubrication in the shock absorber's top bearing. To confirm, open the hood and listen for the sound coming from the shock absorber's top mount. If the noise is indeed from the top bearing, applying grease may help. If the noise persists after greasing, replacement is necessary. Noise from the stabilizer bar: If the noise is not from the shock absorber, check if the stabilizer bar bushings are loose or damaged. Damaged bushings can cause noise both when turning the steering wheel and when driving on uneven roads. Loose bushings can be fixed by adding shims, but damaged ones must be replaced.
My old car had been making a clunking noise from the right front wheel when going over bumps recently. After inspection, we found the shock absorber top mount had aged. That black rubber block is supposed to cushion vibrations, but after seven or eight years of use, it had cracked into a spiderweb pattern. When the wheel bounced up and down, the metal would directly hit the frame, causing the impact noise. The mechanic said if left untreated for long, not only would it be annoying, but it could also lead to deformation and oil leakage in the shock absorber core. Additionally, we checked the stabilizer bar bushings, the ones that look like rubber rings around a metal rod. If they wear thin, they can also cause squeaking noises. Now that it's cold, the rubber becomes even harder, making the noises more noticeable. It's recommended to take the car to the repair shop as soon as possible to lift it up and check these two areas.
