Is the problem exaggerated upon heavy acceleration or turning (and moreso when combined together?)
CV joints usually tend to be a noticeable "POP popopop POP CLICKPOP" whereas a wheel bearing tends to be a "whirr, growl, groan" type of sound. (though at low speeds, and when in a parking garage, etc, you would hear a faint repetitious clicking.
You can check to eliminate the wheelbearing by:
lifting car's front wheel (tire intact...)
try to wiggle the tire left/right, and up/down.. any movement more than 0.02" (basically. if you can feel it moving) is a bad bearing.
There is a how to under duratec maintenance for bearing and knuckle removal.
Ray
