I have a 2002 tj straight 6. If I cut the jeep on and let it run, it will run for 5 to 10 minutes with no problems. A little while after that it starts knock and bog down. The engine will start to run slower and it will shake till it eventually stops 30 seconds later. Hitting the gas while it is bogging down does not keep it going. After it cuts of it will barely crank back up. You can then let it sit for an hour or so and see the same process happen again. I am not getting a check engine light.
The battery is good and the alternator is new.
What could make this happen over and over and progressively get worse. Is a sensor bad? Is something overheating?