What causes a clunking sound when braking and starting?
2 Answers
Braking and starting with a clunking sound is due to the brake disc and brake pads sticking together due to rust, causing abnormal noise. This usually occurs after driving in rainy weather and then leaving the vehicle parked for several days without use. The brake disc and brake pads rust and stick together, resulting in noise when the vehicle is started again. This is a normal phenomenon. Below are some related points: 1. Regular inspection: Develop the good habit of checking tires and wheel hub screws before driving to prevent accidents caused by missing screws or flywheel issues. 2. Poor break-in: If new friction pads or a new brake disc are installed, they may not immediately break in properly with each other, leading to abnormal noise.
I'm a young car enthusiast who has driven many models and encountered this issue before. The creaking sound when braking and starting is likely due to unevenly worn brake pads sticking to the disc brake rotor and causing friction noise, especially common in older vehicles. Alternatively, it could be loose ball joints or control arms in the suspension system, causing displacement and strange noises when the car starts moving. Occasionally, the ABS system engaging to prevent wheel lock-up can also produce similar sounds. Once, my previous car made noises when starting at a highway entrance, and upon inspection, it turned out to be vibrations from loose chassis bolts. I recommend paying attention to brake response speed and chassis stability regularly, and getting professional adjustments and repairs early. Otherwise, prolonged neglect could damage other components and affect safe driving.
