What Causes Unusual Noises When Driving a Car?
2 Answers
Startup or driving when the vehicle has abnormal noise reasons are as follows. Engine abnormal noise: Abnormal noises in the engine compartment are usually sharp metallic sounds. Engine noises are mainly caused by excessive wear of some parts or improper assembly and adjustment. These noises may well indicate that the engine is about to fail, so when the engine makes abnormal noises, it is necessary to go to the repair shop in time to prevent the failure from expanding. Transmission abnormal noise: Transmission noises are generally caused by bearing or gear wear. When the car is driving and suddenly accelerating, you can hear the noise from the chassis. The gears make a "click" sound, and the bearing failure will make a "rustling" sound at this time, which will turn into a "rattling" or "whistling" sound when it is serious. Transmission repair costs are high, so it is necessary to check frequently and change the oil frequently. Body abnormal noise: It may be that the material stiffness of the body itself is not good, and after long-term use, deformation occurs, resulting in friction with other parts and abnormal noise. At this time, just stick a tape on the friction part to basically relieve it. Another reason is that long-term driving causes some parts to loosen, and then it is necessary to find the loose part and fix it.
I've experienced car noises several times. Once, the left front wheel kept squeaking, and upon inspection, the brake pads were worn almost to the metal. Replacing them immediately brought silence. The causes vary widely: aging suspension components like shock absorbers can produce thumping sounds; tires with lodged pebbles or uneven pressure may rattle over bumps; loose exhaust pipes or dust covers clatter over speed bumps; steering mechanism issues cause squeaks during turns; and a loose belt leads to constant engine bay noise. Identifying the sound is crucial—metallic scraping often indicates loose parts, while creaking suggests aging rubber bushings. My advice: stop immediately to locate the noise source; pushing through risks danger. Like me, develop a habit of walking around the car pre-drive—regular maintenance prevents 80% of issues.
