I've been getting this poping from my front axle when changing direction (from forward to reverse, reverse to forward) for better than a year now. I have a lock rite locker in the rear and thought it could be attributed to the back lash but I've driven with the front axle only and the sound is still there. I don't think it's the ring and pinion beacause the sound happens always (ruling out a chiped tooth). I don't think it is the CV joints becasue they appear to be tight (and I had them appart to replace boots). I suspect the entire axle housing is rotating and causing the noise (kind of like axle wrap) because when I look at the diff after being in 4WD I notice the rubber bushings on the two rear supporting bolts are clean on their ends (from having been contacted). What do you think??? I don't know what could be done to correct this.
Tyler