So... another E4OD thread. I've been fighting with this transmission for weeks and after diagnosing and replacing a bad shift solenoid pack, the transmission stubbornly will not shift from 1-2 at anything less than around 2700 RPM.

I did as an experiment adjust the FIPL down from 1.2v at idle to .9v and that didn't seem to change the shift point.

First question: Is a shift point that high normal? When I manually shift into 2nd, it will shift and hold the gear well below the 2700 RPM shift point that Drive does. Other than the high shift point, the shift is firm but not harsh and holds the gear fine as long as you stay at appropriate speed and rpm. Transmission will shift through the rest of the gears smoothly and winds up at a little under 2500 RPM at 60mph in overdrive. (4.10 rear)

Second question: Only code I have is a code 22, which is barometric pressure sensor voltage out of value. I purchased a Motorcraft DY-527 and installed that. Initially when I did a KOEO test, that cleared the 22. After doing a 10 minute or so drive, turning the truck off and repeating the KOEO, code came back. Is a DY-527 the correct Baro sensor? The old sensor was giving me anywhere between 450-550 hertz when I checked it with a meter at idle. I'm nearly at sea level, so I'm pretty sure it's bad.

Third question: Assuming the new baro sensor is good, is there any test I can do of the PCM other than visual inspection? I know the signal wire from the baro sensor goes directly to the PCM, so if you have a code 22 that doesn't go away potentially the PCM is bad.