Hey everyone, I've got a mystery clunking that I would like some help tracking down.
When taking off from a stop I get a repeated clunking, maybe 2 or 3 dull knocks, which then fade to nothing. This only happens if I accelerate medium to quickly. If I pull away slowly there is nothing. It feels like it is coming from somewhere under my feet on the front end.
I first assumed it was a bad U joint on the front axle, but I removed the front axle and there is no change.
It's not a bad motor mount or transmission mount. All have been replaced recently and still look good. I also changed the dif. fluid and my gears looked fine.
Because of the repeated knocks it sounds like something that turns, which is why I first assumed the driveshaft. Could it be wheel bearings or an axle U joint? Wouldn't these also have noticeable effects at speed or be influenced by turning? Could it be a transfer case issue?
Any ideas would be appreciated.

My jeep:
1994 XJ
189,000 miles
4.0
NP231
4.5" lift
33" tires