I'm seeing if anyone else has had a loud clunking noise when turning to the right on any 08' FX4 at low speeds. Just looking for advice . Im trying to figure out what it is . The dealeship replaced the rack (not the issue) , new steeering shaft (not the issue) any thoughts guys it would be appreciated so I can Drive my machine with no sweat !

 

Hmmm not that issue but if I have to sharp turn slowly my tire screeches.... hmmm

 

Idk if this is the case for you but change your front rotors. I was getting a weird loud clunk on a right turn as well but it was more noticeable say hitting a dip and turning as well. I replaced my rotors anyways because of wear and the noise went away. It's a possibility.

 

Mine only does that turning sharp when its in 2 & 1/2 wheel drive (4wd).

 

Mine had a clunk at sharp turns, but it wasn't consistent, it ended up being the wheel bearing assembly.
You can check by jacking your truck up and try rocking the top of the tire back and forth, make sure the truck is stable first, if it moves at all its bad.

 

The left lower control arm was loose , due to weight shifting from turning it was hitting the frame ... two dealerships later it was a prolonged smoke break . Go team !

 

LOL, glad you found it