When im driving about 20 miles per hour on the drivers front there is a vibration and grinding sound what could be this problem
Lots of things can do this. Check your front hub bearings by jacking up the vehicle and turning the tire by hand. Or if you are using a commercial lift, let the wheels rotate with the engine running and the trans in gear.
Last week one of my clients had a similar problem. On his SUV, he changed the left front hub to no effect. He then changed the right hub to no effect. The problem was the front U-joint on the front driveshaft of the 4x4. It sounded like a left side noise but was actually coming from the center of the SUV and it vibrated and felt like a left side vibration.
Since Hub bearings are known to fail, they are worth checking. You do have other moving parts in the front drivetrain. A grinding sound can also generate from the rear Emergency brakes, as the shoes inside the rotors rust, the linings fall off and get eaten by the moving parts. Its also possible to have a floating front brake pad. with the loose pad separated from the metal backing and skipping on the side of the rotor. There is not enough room for the pad to fall out completely.
I hope my solution helps you find your problem.
Jan 11, 2011 |
2004 Mercury Mountaineer