Driveshaft experiment/ sye purchase.
I'm having some issues and I'm not sure if it's a sye issue or a rear end issue. When I did my lift I bought used axles with 4.11 gears. The guy that sold the axles parts out old yjs and was not the original owner of the jeep, so when he said that the rear end had recently been rebuilt I didn't exactly trust him. After I did my 4" lift and replaced the axles and wheels I started hearing a noise. I thought it was the used 33" tires I put on it but a month later I replaced them with some new ones. That wasn't it. Then my auto tranny went out. I had it rebuilt. That wasn't it either. I am eliminating the tcase as the problem as it didn't make noise before. So I think it's either the driveshaft angle (the transmission drop isn't enough enough especially with an auto transmission) or it's the rear end. So I was thinking of doing an experiment, remove the rear driveshaft kick it into 4wd high and drive it at freeway speeds to see if it still makes that noise. My question is would the rear end still make all the normal noises it would with the shaft hooked up? Or is there something with the differential that would be bypassed by not having the shaft hooked up? Is this a good test or would i possibly ruin something? I'm planning on puttin a sye kit and double Cardon shaft in eventually anyways but I've averaged about $1000 a month into this new jeep since I bought it 6mo ago so I don't really want to spend more money on it right now if I don't have to.