Jack it up on stands all the way around take tires off put in gear see if you hear the noise if not lock in 4x4 and repeat might help you out. Alltho you may not hear it without weight on front end if it is in fact wheel bearings good luck.
Yeah, I've done this procedure a few times, cannot replicate the noise up in the air, with no load on the tires.
Yes hub assembly.
They felt fine by hand but did have play and the tires wore uneven. I also had bad ball joints so that added to the play making it easier to notice.
Wondering if bad axle shaft bearings or seals might cause noise like your hearing? Maybe not seals but the bearing on each side of the diff the the axle shaft rides in?
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Interesting, well I did have the front passenger side apart last night and everything felt tight. But I suppose I could put the new wheel bearing in and see if it goes away, if not, try the other side.
As for the second part, are we talking the front or rear axle now? Cause for the rear axle I just had the bearings replaced in the differential, not sure if that included the bearings that the axles ride on? I know he didn't do the rear wheel bearings.
^ This. Definitely check the idler bearings on the inside of the hubs. My truck was doing this and I changed bearings and it quit for about 10k. Just recently started doing it again.
Front or rear axle are we talking?
If front, is that the smaller diameter bearing on the back of the front hub assembly? If so that bearing was smooth on at least the passenger side when I had it apart last night. Next is the driver side, just to confirm, since I already have a $200 hub assembly on my bench.
