steering wheel clunk

hey everyone, I recently bought a 94 4.0 5 speed 4x4 and I am not sure what is causing a clunk in the front end. it only happens when I straighten the wheel after turning left. it wont do it while stationary either only when I'm moving. I'm relatively green when it comes to working on cars I...

I am sorry if this is somewhere else in this forum but I could not figure how to narrow it down enough to find this topic if it is out there. Exactly what the title says. I only feel it in the steering wheel just driving down the road and little ripples in the road I can feel a sharp clunk in...