Re: 1998 cherokee question and maybe for sale.
Its possible the rear bearings are going bad, its hard to tell w/o driving it personally. Id say go for it but dont pay more then $2000 for it. I bought my 98 xj 4 years ago for $2200 and just recently parted it out before buying my wk.
Id say what ever is wrong with it is prolly an easy fix, but could be pinion or carrier bearings.
2005 Dark Khaki (PJT) WK Limited 4.7L V8, Suckin Gas!
2006 Jeep Liberty KJ 4x4 2.8L CRD Sips Diesel like well aged Whiskey.