I love driving my Jeep. I have only done 98,000km and now she is not working. Recently while driving my jeep the rev counter jumped, I lost power and pulled over. I had her towed to the local Jeep dealership. She started fine for them and they had her for hours trying to find the problem. They said it could be the transmission control module the speed sensor and the ignition. The 3 codes it gave were P0700, 0320 and 0725. They said it could just be an intermittent problem so I brought it home. Today I had difficulty starting her and had to wiggle the gear shifter in park. I got it on the road and then couldn't move it into reverse. I moved it into drive by pushing lever and it sprang into reverse???????

 

Even though the transmission /module is the likely culprit, you have to rely on what codes are stored.
The jeep can do some pretty weird stuff when the battery is marginal.
I would start by having a proper load test done as well as using a hydrometer on each cell to ensure that all cells are charging equally. The larger 800CCA group 78 are a much better choice over the stock 630 CCA That being said, the dealer's are normally well equipped with Star Scan tools to diagnose these problems. I hope you can get to the bottom of these problemos.

 

Check cam and crank sensors.