1. Worn or Damaged CV Joints: The CV (constant velocity) joints are responsible for transmitting power from the transmission to the wheels while allowing the wheels to move at different angles. If the CV joints are worn or damaged, they can produce a thumping or clicking sound when turning or accelerating, and the noise may worsen as the car warms up due to the expansion of metal parts.
2. Faulty Wheel Bearing: A faulty wheel bearing can also cause thumping or grinding sounds, particularly when the car is turning or changing speed. The noise may be more noticeable when the weight of the car is shifted to one side, such as when turning.
3. Brake Problems: Brake issues, such as worn brake pads or rotors, can also cause thumping or grinding noises. The noise is often accompanied by a vibration in the steering wheel or brake pedal.
4. Loose or Damaged Suspension Components: Loose or damaged suspension components, such as worn ball joints, control arm bushings, or tie rod ends, can cause knocking or thumping sounds when driving. The noise may be more pronounced when turning or going over bumps.
5. Problems with the Steering System: Issues with the steering system, such as worn steering rack bushings or faulty power steering components, can also produce knocking or grinding sounds, especially when turning the wheel.
It is important to have the noise diagnosed by a qualified mechanic as soon as possible to determine the exact cause and prevent further damage to your vehicle.