What Causes a Sudden Scraping Metal Sound from the Car's Chassis?

[DeBarrett]

Here are the reasons for a sudden scraping metal sound from the car's chassis: Disc brake noise: This occurs when the brake shoe support plate, damping spring plate, or guide plate of the disc brake is damaged, deformed, or detached, causing the gap between the brake shoe and the caliper support frame to increase, leading to mutual collision and noise. You can visit a repair shop to fix the deformed parts or replace the detached components. Front suspension ball joint noise: The gap between the ball joint and its seat becomes larger, resulting in severe looseness. Since the ball joint seat is a sealed structure and cannot be disassembled, the only solution is to replace it at a repair shop. Front wheel shock absorber noise: The vehicle often drives on rough roads with improper maintenance, causing the shock absorber to leak oil and become damaged. At a repair shop, the severity of the damage will determine whether it needs repair or replacement.