View JMH21814's Jeep
First of all, you should always give vehicle specs when asking a question so we can have a frame of reference. I assume you have an xj, but what year and motor? Quick internet search said 97+ xj with 4.0 is plug-n-play. That means if you take the old one out and put the new one in it'll read fine. All the sensors are the same. Only difference will be the odometer. I believe 96 and older is a bit more complicated, but again, a quick internet search will let you know all you need. Hope this helps, good luck.