My new 1992 YJ was grinding gears and had a loud banging that got faster the faster I went. A new transmissions solved the grinding and popping out of gear. But the banging still occurs under load. Letting off the gas or coasting results in no banging. Maybe the xfer case? Could it be the rear? It has become my favorite money pit. Advice is needed!
Just as a follow up and for the record I ended up locating and purchasing hey Dana 35 rear axle assembly with perfect teeth and very little play . Even the spider gears were tight. It came with the Dana 30 front axle assembly. Also in vg shape. paid 450. Since my yj is a 92 and the axles were from a 95 the yoke accepted a bigger u joint. Took 1 day and 28 more $. But now withnew engine mounts, new trans, good xfer case and a dif with very good orthodontics I have a running Wrangler.
Continuing thanks to all those who gave me insight.
In my case the whole rear was shot. The pinion had missing tooth, many (6 or 7) teeth on ohe ring dear were broken, the all spider gears were pitted and the profile of the teeth had worn into a new shape, the carrier holes for the spider gear pin was elongated. Nothing to salvage.