Squeaking Sound When Driving Slowly Over Bumpy Roads
3 Answers
The reasons for squeaking sounds when driving slowly over bumpy roads are as follows: 1. Lower control arm: The ball joint of the lower control arm is loose with excessive clearance, causing abnormal noises when going over bumps; 2. Stabilizer bar: The rubber bushings of the stabilizer bar are loose with excessive clearance; 3. Shock absorber: The shock absorber's plane bearing is damaged or the buffer rubber of the front wheel shock absorber has aged. The connection points between the shock absorber and the vehicle body are equipped with buffer rubber. Over time, rubber components will harden and age. When hardened rubber is compressed, it produces a clunking sound. Replacing the aged rubber on the shock absorber will resolve the issue.
I often encounter this issue when repairing cars. The squeaking sound at low speeds mostly comes from aging suspension systems, such as hardened or cracked rubber pads on top of the shock absorbers, which cause metal friction noises when going over bumps. Alternatively, it could be due to worn ball joints or insufficient lubrication in the bushings. I recommend doing a self-check first: after parking, shake the tires by hand and tighten any loose bolts; open the hood to inspect the shock absorber parts, and if the rubber is dry or cracked, try spraying some lubricant. Regular maintenance should include keeping the chassis clean to prevent dust buildup that accelerates wear. Ignoring such small noises can lead to further damage to suspension components, affecting driving stability and even safety. It's best to have a professional inspection during annual maintenance—it saves money and gives peace of mind.
My car had the same issue - squeaking when going over bumps at low speeds. It turned out to be worn rubber bushings in the front suspension. The hardened rubber would rub when going over bumps. It's not difficult to check yourself: park on level ground, get under the car and look for obvious looseness or rust at the chassis connection points. Tighten any loose bolts, and if the rubber is dry or cracked, spray some silicone-based lubricant as a temporary fix. If the noise persists, it might be worn shock absorber top mounts or brake-related components. Don't delay - get it diagnosed at a repair shop as soon as possible. Replacing these parts usually costs just a few hundred yuan. Ignoring it will accelerate part wear, increase repair costs, and lead to higher fuel consumption in daily driving.
