I just purchased (at auction) a '98 F-150 Super Cab w/5.4L, 4wd and automatic. 132K miles. Runs great and in excellent condition (aside from the "smoker" previous owner).
Within a few miles I got a "Check Engine" light. Owners manual says to check OBD codes as soon as as possible. (still ok to drive)
I had the local Auto Parts store read the codes and they gave two items. "Bank One Lean Burn" and "Bank Two Lean Burn". I suspected that it had recently been run out of gas since the fuel level was very low, until I made it to a gas station.
I had the tech. clear the codes but the Check Engine light came back on within 50 miles.
My next thought would be to check the fuel filter. I have no manuals yet and don't know where this filter would be located.
Any suggestions or comments would be appreciated.
Steve