Bad u-joints?

Apply up/down pressure on driveshaft ends, everything should be solid with no wobble. If there is any play, it is not hard to spot.
If i am not mistaken, mine were making cracking noise during stop > go.

If you referring to your recent 130000 mile purchase, dont think twice, refresh both drive shafts with new ones.

this may be helpful
https://wranglertjforum.com/threads/what-u-joints-come-on-the-tj.2438/
 
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