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 car runs, then stand on the side of the car where the pulleys are and try to distinguish where the noise is coming from. If you hear the noise coming from the front of the engine and it is not coming from your accessories, you may hear the belt flapping around due to the loss of tension. 3.