Its your rear suspension links bushings. Common problem on our Pathfinders.
You should be able to reproduce it by accelerating then decelerating a
couple of time is a row. The rear end will "wobble" back and forth.
"Professor" <briangriffey.TakeThisOut@sbcglobal.net> wrote in message
news:1116852329.434859.92000@g44g2000cwa.googlegroups.com...
> Have you inspected your tires? Maybe you have a belt that's unwraveling
> inside the tire. Jack the vehicle and spin the tires while eyeballing
> them for being egg-shaped or having excessive run-out.
>
> Professor
> www.telstar-electronics.com
> >> Stay informed about: Help ! 1996 Pathfinder Wobble