What Causes Abnormal Noises When a Car is Driving at Low Speed?
2 Answers
Vehicle driving at low speed when there is abnormal noise reasons are as follows: 1. Excessive clearance between the piston and cylinder wall. 2. The piston pin is assembled too tightly or the connecting rod bearing is assembled too tightly. 3. Excessive clearance between the tappet and its guide hole. 4. Wear of the cam profile of the valve train. Solution for abnormal noise when the vehicle is driving at low speed: Do not try to solve it by yourself, you need to go to the 4S shop for professional maintenance personnel to check and repair according to the actual situation. More information about abnormal noise when the vehicle is driving is as follows: 1. Most common abnormal noises of the engine depend on the speed state of the engine. 2. There are also many abnormal noises in the engine that are obviously related to the load.
I remember last year my car made a strange "creaking" noise when turning at low speeds, feeling like metal rubbing. Later at the shop, they found the front suspension's shock absorber rubber bushings had aged. At low speeds, slight body sway causes these hardened rubber parts to rub against metal components, creating the noise. Similar causes include brake system issues - like excessively worn brake pads or rusted calipers - where more frequent low-speed braking generates squealing. Another common culprit is loose steering ball joints, especially when understeering on rough roads at low speeds, producing "clunking" sounds. I recommend never ignoring these noises - promptly have a professional inspect the chassis and brake system to prevent minor issues from becoming major safety hazards.
