All of it. The 10 percent figure you occasionally see is nonsense that a lot of people believe just because they've seen it so much.
Quick Answer. Some things that cause a vehicle's front end to make a clunking noise are worn ball joints, a damaged tie rod, broken or loose sway-bar links, hard or damaged shocks, and faulty shock mounts. An automotive professional can inspect the vehicle's front end to locate the source of the clunk. Continue Reading.
If the knocking sound only happens when you are turning the steering wheel, then its the CV joints on the drive shafts. If the knocking happens when you turn the steering wheel when the car is not moving then there is a problem with the coil springs that form part of the front suspension. If the noise occurs when driving over say a speed hump then there is a problem with the shock absorbers. jason c Â· 10 years ago.