Based on the details you've given, it may be your front hub assembleys that need to be replaced, as well as both your front cv half shafts. Mine did the same thing, you could put the car in gear and watch the half shaft of the driving wheel just spin lol. There was a loud screeching noise too- sometimes the teeth on the end of the shaft would catch, but mostly not. Again, this is based on the details you've given. If this is the problem, at least it is a cheap and easy fix. CV half shaft via Autozone- $75-100. Hub assembly (Note; front wheel bearings will be listed as a complete hub assembly incase your going nuts trying to locate a bearing); $45-200. Hope this helps.