http://www.youtube.com/watch?v=_froDRQboUw

the sound happens around the 6 and 15 second mark

it sounds like its coming from the rear of the car. differential? It only happens when going slow, like 4mph. It usually doesn't happen just once, usually you can hear it click quite a few times in succession. any advice?

 

I feel like im sea sick after watching that. Im still new to s2000's but from just regular research that iv done the past couple months it sounds like maybe the rear axle nuts might need to be tightened. I remember reading a thread that there under torqued from the factory and they make a clicking sound. Mine makes a similar sound when i back up and then go forward at low speeds. I just havent had the chance to tighten it yet.

 

When does it happen? Is it similar to below?
Problem: Clicking noise from rear when moving in first gear or reverse. Sounds like two metal marbles.
Solution: Honda use to torque the axle nuts to 180 lbs. The correct torque is now 230 lbs. Torque your axle nuts.

 

Propeller shaft had the same noise shop tested it and that was the problem . They are building me one with u joints but have it tested first