I have a 2005 F-250 4x4 and recently i noticed a grinding noise while driving and then when I come to a stop I hear a clunk and the grinding stops. It sounded like it came from the driver side wheel so I changed the wheel bearing assembly. About 3 days later it started again. Now it sounds like it's coming from both sides. I am at a loss. The hubs are unlocked. It's hard to describe the sound but to me it sounds like 2 gears with a large chain rotating on them. I hope that made sense. Any help would be greatly appreciated. The clunk can be felt in the brake pedal.

 

How do the brakes and rotors look?

 

Brakes are new and the rotors are in good shape.

 

i have the same issue. Did you ever find a solution?

 

I did. It wound up being the 4 wheel drive trying to engage. I took the truck out and locked the hubs and placed it in 4 wheel drive and drove around. After taking it out it hasn't done it since. This is after I replaced the left front wheel hub assembly for no reason. I hope this helps.