Good compi, the only thing I can recommend to start is that you put it on self -diagnosis to know if any sensor is screwed. It is easy, with the key in the start drum, you give him ignition and take away three times, you leave it in ignition position but without starting it. The witness of Averias that is the light of Check Engine will begin to flash. The flickers, the first group of flickers indicate tens the second group indicates units. The dozens of the units are separated from a short pause. Each complete code of damages is separated by a long pause. Let's say (three flickers, short pause, two flickering, long pause) is equal to Averia code No. 32, after the long pause begins another different code or none in case of being the only one. Once the code is identified, you put it on Google for Jeep/Crysler and ready. Or in any case you possess it and I spend the detail to search.