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.
Occupation: Living life & loving it. Location: Texas. #1 Jun 30, 2009. I have a 2001 Ford Expedition with a 5.4 L engine. I hear a whining noise from the rear end and would like your opinion on what might be the cause. The noise appears when I'm coasting. During acceleration or while maintaining speed, there's no noise that I can hear. Once I remove my foot from the accelerator, the whining noise begins, and it slows down in direct proportion to the speed of the vehicle. I changed the gear oil and replaced it with synthetic oil plus one tube of friction additive.