JAKE94
Member
Hello Does anybody have the stock fuel trim numbers for the 2003 4.6l expedition? I'm getting a p0171/p0174 code, I'm pretty sure after my diagnosis its being caused by my bank1 rear 02 sensor, but I was looking at my fuel trim numbers when I was ruling out the possibility of a vacuum leak at combined there only at about +2.29% which should be well within range but I don't know the actual stock tolerance's.