Winding/grind sound on 1997 Jeep Grand Cherokee

So i just bought a 97 jeep grand cherokee limited v8 with the 5.2 l engine in it. When i test drove it everything was fine sounded great good to g and bought it. After the guy left i realized i didnt check the 4 wheel drive so i checked it and it worked. After i put it back in 2wd the car now in the rear end makes a a mixture of a winding kind of grind noise. Im pretty upset because i just sold my truck today because the engine was knocken but now the new car i buy seems to have an issue to. I was wondering if you guys could pin point what this sound is, how long i might be able to drive on it for, and an estimate of what the cost is to fix it, if you know what the noise means. It kind of sounds like the same noise my truck made when it was in 2 wheel high.

by in Maple Valley, WA on April 10, 2013
2 answers
ANSWER by on April 11, 2013
Best take it to a qulified mechanic and let them drive it so they can hear the noise and give you their opinion. No one can discribe a noise to me and get a accurate diagnosis....I need to hear it. Do not put it off and hope it gets better...that never happens.
ANSWER by on April 11, 2013
best seek a insp and diag it could be several issues