SO TODAY AT LUNCH I NOTICED MY SPEEDO STARTED JUMPING.
AT ONE POINT IT READ 0 AND I WAS GOING ABOUT 40 MPH.

WHAT'S GOING ON????

EVERYTHING ELSE SEEMS FINE. NO LIGHTS, SHIFTS AND DRIVES FINE.

CLUSTER ON IT WAY OUT?

IS IT COMPUTER CONTROLLED OR CABLE DRIVEN?

Year of KJ? ABS or not? Need more info.

Most common for '05 and older KJ's is bad wiring connection on the rear sensor located on the top of the rear diff.Most cases very hard to find as it's inside the connector that most of the breaks happen.

IT'S AN 02, TO BE HONEST I'M NOT SURE IF IT IS ABS OR NOT.
DOESN'T SEEM LIKE IT HAS IT WHN I BREAK HARD...

IT IS LIFTED AND HAS 265-75-16's

Wire at the top of rear axle like TJKJ says. Mine will act up after a jump or hanging axle down enough to pull on the wire.

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02 Sport,Frankenlifted,JBA arms,31/11.50/15 LTB,Aussie locker,204,000m

I'll check it out tonight thanks guys.

Had the same issue on my wife's 02, chaffed wire at the speed sensor connector by rear diff. Cut out the damaged wire, spliced in an extension, redid the connections, no issue since.

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http://www.cardomain.com/ride/2434197
2002 Liberty Renegade
-OME 927-Rancho RSX 17505-3 Ring Clevis-JBA UCA-Teraflex Bump Stop
-JBA-LIB25R Rear Coil-2 Upper/Lower Iso-Skyjacker H7088 Shocks-3 Hockey Puck Bump Stops
-Powerslot Rotors-Moab Rims-BFG TA/KO 265-75-R16
-ARB Bumper-Rock Rails
-Super 44 Exhaust
+ Some More Crap

Thanks Guys it's all fixed!

Crawled under there after work while was still a little light out and did it.