The last few weeks I have noticed that at very low speeds (x < 10 mph) I have heard and felt knocking in my 2000 4.0. By the way the vibrations come through the gas pedal and the steering wheel, it feels like it might be the front differential spinning up (or something other to do with the front differential?). I got the underside hung up a few weeks ago and actually crashed down on it fairly hard (that darn curb drop-off is going to pay ) 4x4 still works fine and I have noticed no problems other than the vibrations. I've read people have figured similar problems to be the exhaust even? It was at least somewhat affected by my little accident as well.
Does anyone have any experience with something like this? I'm still very new to the forum and may not have described this very well, but if anyone has any advice that'd be great.
I would pull the cover and inspect the gears first.
'95 XJ country edition, 4" coils/3/4" spacers, HD leafs with extra main added in, Ironman adjustable control arms, rough country shackles, aussie locker, JK rubicon shocks, 35" mudder's, soft 8's, cobra cb
Sold '00 TJ, 4" lift, rusty's adjustable control arms, skyjacker shocks, rock krawler adj. trac-bar,rugged ridge SYE and RE driveshaft, soft 8's, 35" mud king xt's,XJ HP D30 w/aussie locker, 4:88 yukon gears, hella 500's, rock crusher diff covers
4. 04 Dodge ram 1500 quadcab, yes, it has a hemi.
5. '08 BMW X3, Mods in progress.