Hi everyone, i have a 98 Jeep xj with 65xxx miles on it. It’s the base model with only dummy lights on the dash so it makes problems a little harder to diagnose. Anytime I’m off-roading or driving for a while and the Jeep starts to get hot the oil light comes on and the idle starts to go up and down a little. I had the idle sputter problem when i first got it but i changed the plugs, wires, distributor cap and rotor. I was thinking it could have to do with the minor fuel leak in the line by the tank but that wouldn’t explain the oil light. Anyways i let it sit for 5 min with the hood popped and it would always run like new again. However yesterday i changed my upstream O2 sensor and now almost anytime i stop or am at idle it starts to fluctuate without the oil light coming on. Wondering if anyone would know where to start. Gonna change the fuel lines today after work.