I took my jeep to the camp today and had fun....this is the first time i had wheeled this jeep with the new MPI kit (it did great on slopes and not cutting out like the carter carb)while i slowly climbed over rocks, twisting and balacing the axles and body.

i had the rear passenger wheel airborne (no contact with gound)over rocks, while drivers side was my contact wheel.

the axle (drivers side) started making a bad clicking noise (sounded like a card on bicycle spokes) as it turned and got me over the rocks. First i thought the tire was rubbing inside of fender well, but that was not the case, when this happened a second time (same circumstances) i got out and looked around the rear drivers side tire, although it was pushed up in the fender well, it was not making contact with fender or flares.

I have the stock AMC 20 with new Moser 1 piece axles.

Anybody know what this is?

Do you have a locker or limited slip in the rear?
John
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limited slip in the rear

You say both wheels were in motion. When was the last time you changed the differential fluid including limited slip additive. The clutch packs in a limited slip can sometimes make noise when working. It sounds like they are working...one wheel in air one wheel moving forward...so I don't think th clutch packs have gone bad. I would open up the rear end do an inspection of the spider gears and R&P. And if nothing seems out of the ordinary replace the differential fluid and add the limited slip additive and see if that remidies your problem.
John
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I just replaced the innser seals on my axles and then replaced the differential oil with standard 90 weight.

limited slip additive?? what is that?

It comes in 2oz tubes I believe, and is an additive that must be put in when you replace the diff fluid...Don't know what it dose, just know that it's gotta be there or your limited slip gets noisy.
John
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Thanks babypoo,

I will install some of it. That may be the problem