What Causes Abnormal Noises When Driving on Rough Roads?
3 Answers
Abnormal noises when driving on rough roads can be attributed to the following reasons: 1. Friction between car components: It may be caused by the friction sound from the fixed rubber sleeve of the suspension lateral stabilizer bar, or related components of the interior trim panel rubbing against each other. 2. Lack of lubrication in the steering column dust cover: Insufficient lubrication in the steering column dust cover can lead to dry friction sounds. Applying some grease inside the dust cover can eliminate the noise. 3. Abnormal noise from the steering column universal joint: The front end of the steering column is equipped with a universal joint. Lack of lubrication in the universal joint can cause abnormal noises, which can be resolved by lubricating the universal joint.
With years of experience in auto repair, I've found that car noises on rough roads are extremely common, usually stemming from suspension system failures. For instance, leaking shock absorbers or aged springs can produce hollow banging sounds over potholes; worn linkage bushings in the chassis create gaps that result in clattering noises when bumpy; damaged wheel hub bearings may emit a humming friction sound. Other issues like loose stabilizer bars or broken exhaust system brackets can also cause vibration-induced noises. I recommend first checking if low tire pressure is amplifying the sounds, then inspecting underneath the vehicle for any loose bolts. Ignoring this problem carries significant risks, especially when driving at high speeds on uneven terrain, as it accelerates component wear and may even lead to loss of control. Regular chassis maintenance is crucial—lubricating parts at least quarterly can prevent most abnormal noises.
With over a decade of driving experience, I find the frequent strange noises from my old car on rough roads really frustrating. The main issues lie in the suspension and chassis: insufficient damping of shock absorbers causes dull thuds over bumps; loose connecting rods produce squeaky sounds; and dried-up wheel hub bearings intensify friction noises. Loose items rolling around inside the car, like tools in the trunk, add to the noise sources. Last time, I found a loose screw myself – tightening it made a noticeable difference. Money-saving tips: Regularly shake wheels by hand to detect noises, or have a technician perform quick checks. Long-term neglect worsens these sounds and damages the drivetrain. Replacing parts is expensive, so regular inspections and securing components to prevent hazards are wiser – safety outweighs cost savings.
