Topic: vibration and/or grumbling

[dirtyjeep95]

around 50 mph when i partially let off the gas, i get a vibration and/or grumbling, sounds like out of the rear of the jeep, but can't really tell, rear is full and so is the transfer case, anyone have any ideas? it also doesn't make any difference 4wd or 2wd thanks, clint

[Bounty Hunter]

Sounds like a ujoint in the rear driveshaft going bad.

[dirtyjeep95]

u joints are good, what gears would do this?, rumbling between load and coasting

[jcsanders79]

I have had exhuast parts to that when they weren't hung properly or damaged?  Gears usually roar but they could vibrate I guess.  Pull the cover if everything is ok then you can move on. 

[jrollings]

i would def. pull the diff cover:  a rumbling b/w drive and coast sounds like the rear end.

[aw12345]

Could be a pinion bearing, carrier bearings and excesive backlash growl under load, pinion bearings will growl when you let of the throttle