p1179
#25
#27
I had a Ford Bronco once that ran rich as hell then lean as hell. After wrestling with sensors and computer crap (obd1) I found one of the lines off the pump on top the tank was collapsing inside. Took me forever to figure it out. It was only out of desperation that I finally started throwing parts at it. I had removed the gas tank twice and replaced the pump twice. Never saw the bad line. I must have replaced every sensor twice on that truck. Haha