Fired up the Jeep this morning and it sounded like it was running on 5 cylinders. Pulled codes P0306 (Cylinder 6 misfire detected) and P0155 (O2 sensor heater malfunction (Bank2 Sensor1). I live in a cold climate and let the gas get low. Added some gas line antifreeze and let it run a while but its still running rough. I plan to start tearing into it when it warms up enough, just wanted to get ideas on what I should check first. Its a 2003 TJ, 4.0L.
Thanks!
Thanks!