OK!! I just re-read your post. Is it a clicking noise?
Try this. Go to a u-turn bay or somewhere you can make a turn with the steering wheel all the way turned over. Now turn the wheel all the way over, and accelerate hard.
If you hear a repetitive click noise, your ummmm.......:damnit:
I can't remember what they are called, but it has to do with the front suspension. Damn, I can't remember what it's called.
Have someone with you in the car, and have them stick their head out the passenger & drivers side window. See if they can determine which side it's coming from.
Once you do, check the ball joints, tie rods, control arm bushings, etc. I think the haynes manual will have some tests that you can perform to find the problem.
Scott