I have a 2005 Wrangler x 4.0 with auto trans with 124,500 miles on her. Fluids and all filters have been changed and flushed at 100,000 and has been doing great but over the weekend, riding down the highway just all of a sudden it jumps out of gear and motor races, I let off gas and it goes back into gear and no more problems, Next day going to town I get a terrible vibration at about 50 or so, so I get off gas, slow down and it goes away and once again does not do it again. What could it be??? Checked tranny fluid it was fine, red and no smell. Wheels are tight and no play so I am figuring tranny going out or torque converter, Any guesses on what to search for or try? Thanks in advance for any help.