1999 Pontiac Grand Prix

Noises problem
1999 Pontiac Grand Prix 6 cyl Front Wheel Drive Automatic 140000 miles

I have a 99 Pontiac Grand Prix that makes a loud clicking only when I turn right. The whole time I'm turning.(Click click click fast)It sounds like it's coming from the front right side. We've changed both cv joints and It was missing a motor mount we replaced that, struts are not leaking. So what would be making this noise and how can I get it to stop. Our mechanic is very stumped he can't pin point it either. Any info would be helpful. Thanks so much.
March 2, 2009.

Clicking noise in turns is classic to a bad CV joint, but since you replaced them,

Raise car, put on stands, grasp wheel and push/pull both horizontally and vertically looking for any movement. If movement, then could be front hub bearings, ball joints.
I would also inspect brakes, bracket, calipers, rotors, pads.

Mar 4, 2009.