Did you install a genuine Jeep TPS, or did you install some crappy Chinese "Lifetime Warranty" junk ? Cheap crappy "Lifetime Warranty" parts are often out of specification or even failed right out of the box. Many times they have a short service life before they fail. Always buy top quality replacement parts and genuine Jeep sensors.
Make sure your transmission fluid is clean, and filled to the correct level. The AW-4 transmission uses Dexron-III/Mercon transmission fluid. Any other transmission fluid type may cause strange shifting.
Go here - http://www.jeepforum.com/forum/f11/t...ks-tsbs-89273/
- and find the AW-4 Service and Diagnostics Manuals. Perform the tests and follow the diagnostic procedures.