There are a few different ways to test fro this-seeing as how no one answered the question.
First off, find an empty parking lot, begin driving in ever-decreasing radius circles, clockwise, anti-clockwise. If at one point, you encounter a repetitive clicking from one front side or another, straighten the wheels and head for home as repeating this will eventually cause the CV joint to explode and cost more.
If while you;re doing this, it seems as though one wheel is skidding around the corners (outside wheel most likely) it is an indication of a viscous coupler problem.
Lastly, if one remove the front wheels and "hub" caps, and grabs ahold of the exposed CV joint axle, if you can pull it toward you, it's likely you've got a problem on that side.
I've probably got all the parts you'll need to put it back together, new/used.
Yes, I am still alive, and still in the Rover parts business.
Text me for greatest likelihood of finding me.