Transmision shifting problem

My guess is you want to adjust the transmission kick down cable. because why? It doesn't shift to lower gear when you push the throttle pedal down hard?
I recommend you review the Repair manual at your library. or http://www.filepeep.com/ if they have it
or manualslib.com

Check the linkage under the stick console. May be lose or broken.

see notes

Does that transmission have external shift linkage? Sounds like a linkage broke or the neutral gate is way off.

Yes it can be transmission issue,as per the problem.In this condition i suggest to you to go through the procedure mentioned in following help links.Click the link below and go through troubleshooting procedure to confirm the problem :-----Engine stumbles and shuts off in forward gear? http://schematicsdiagram.blogspot.com/2012/01/engine-stumbles-and-shuts-off-in.html-----------Transmission problem? http://schematicsdiagram.blogspot.com/2012/01/transmission-problem.html
---------Automatic transmission will not go into high gear? http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html
------------Transmission shifting problem on Toyota Land cruiser? http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html
---------Transmission Slips out of gear? http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html
---------OD light flashing and transmission fluid leaking? http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html
-----------Overdrive light in the dash blinks? http://repairhelpcenter.blogspot.com/2012/01/overdrive-light-in-dash-blinks.html
----------O/D OFF light flashes ? http://technoanswers.blogspot.com/2012/01/od-off-light-flashes-on-ford-explorer.html
---------While going in reverse mode Fuse number 27 blows? http://howtobyme.blogspot.in/2012/02/while-going-in-reverse-mode-fuse-number.html
---------This will help.Thanks.

Definitely not good. The transmission is slipping internally due to worn gears and clutch packs. It will have to come out for rebuilding, IMO. Have a transmission shop check it out.
Good luck.

I suspect that your syncromesh has gone, one indication is the gears grinding when you try to shift into reverse. One solution is to tie a bungee cord some where and hold the shift lever in. This is cumbersome, so sooner or later you are going to have to re build the reverse gear in your transmission

Check the transmission mount. It may be broken at the center rubber cushioned area

if this is a 5 speed manual transmission...all you need to do before putting your jeep into reverese is puting it into first gear and then shifting it to reverse to avoid any grinding or problems shifting into reverse...this isn't a problem just a poor jeep design by not installing an extra gear to eliminate this grinding or shifting problem

There isn't a modulator on this trans as it is electronic

You can have first gear going forwrd but no reverse. It is possible. The low/ reverse clutch isn't needed to go forward.