Re: New to the Jeep world....problems already!!
Depending on your specific state, if it is purchased from a registered dealer, even if it is sold "as is" there may be certain merchantability laws that may apply.
Did you talk to the selling dealer about it? Often, even if they don't have to fix something, to keep a customer happy they may be willing to have a look. Of course, they can't do this if you don't let them know about the problem.
Are any codes being thrown (check engine light coming on)? Have you tried the key dance to retrieve any possible stored codes?
What is the gear range selector displaying in the instrument cluster when this is happeing? Is it showing 4 and then 3 and then 2, etc, as it drops gears? If so, it sounds like the electronic range select might be acting up. If it is displaying 'D' the whole time it may be something else.