My friend has a 07 jeep libby and as she cruises along from time to time it bucks if you understand what im sayin...Not sure anyother way to explain it she said it did it on way to store and on way back fine but has done it a couple weeks ago as well.Also she has 93,000 on it and only thing that has been done is oil changes and brakes and bein a 07 like mine i cant check the trans fluid..Anyone have any ideas? She said she was doin like 55-60mph when it was studdering/buckin

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07 Jeep green Kj, BFG A/T's,K & N drop in filter,Full Mopar Skids,front tow hooks,Super winch rear shackle,Stereo,CB..

Any other issues? My old car used to do that along with a rough idle. I changed out the plugs and wires and problem solved. Tommudd or tjkj could probably give you a better answer though

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2008 Jeep Liberty KK, SkySlider, Tow Package, OME/Bilstein Lift, Flowmaster Delta 50, Removed Resonator, DuraTracs, In-dash CB, PIAA 520 ATPs, Dual KJ Tow Hooks
http://www.cardomain.com/ride/3974106/2008-jeep-liberty
Lost Jeeps PNW/BC Members Map

Without really knowing the history it could be a number of things from plugs that have never been changed to dirty air filter and or intake
bad gas, trans issues
I'd start with plugs etc first to see how bad they are

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MUDD'S MOTORSPORT'S We do IFS lift installs ,
03 OVERLAND EDITION /Kilby-Skidrow-Mopar-4XGuard skids/ 2.5 inch TOTAL CONTROL JBA coilovers -JBA Arms/MOABS-31 FALKEN WILDPEAK AT3W / 4.10's etc, 04 Kilimanjaro Edition loaded, plus 05 KJ limited

Mine does the same thing and has a vibration or hum, but when I turn the OD off all goes away.

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07 light khaki 4x4 KJ Frankenlift II Baja JBA 4.5 UCAs

Could also be the cps.

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'02 Jeep KJ 4x4- Gone
'92 YJ- lift, swampers, bumpers....yeah, its pretty sweet.
*DISCLAIMER*: I can not be held liable for anything I say on the forums or in real life.
I also can not be held liable for any jeep breakage or life problems caused due to my advice being taken.