then see if the code comes back on.
I have a code reader, and can reset the codes that way. The code comes back within 20 miles of mixed city/highway driving. Very consistent.
I do not know the items you refer to as "extra air pipes" and AFM sensor please explain
By "extra air pipes" I mean the piping that goes between the intake bellows and the very rear of the intake manifold, next to the EGR valve. Air flows through the Air Flow Meter (AFM, or whatever Ford calls it), through the in-line PCV and then into that spot at the rear of the intake manifold, which is where Bank 1 is. There's a plastic resonance tube, about 1" in diameter and 15" long, that runs fore-aft in that area. I took it all off and checked for leaks, cracks, etc. but it all seemed OK. If there were a leak, then that would cause that bank to run lean, since that would be a leak of unmetered air.
why did you replace sensors in both banks?
I just felt like doing them both at the same time ... car has 85,000 miles on it.
You did replace the upper sensor, below the coil pack, at the firewall, correct?
Yes, and it was not fun.
