Arrgghh. So, tore it apart, pulled the plug on the input sensor and c-4 on the PCM.....and no continuity for signal line. Had it for ground.
Cut open the harness....the plug is spliced in about six inched into the harness. No idea if factory or not.
Harness rubbed in places, some wires a little "flat", no rubber bands (pull, if it stretches like a rubber band, conductor is broken).
No corrosion anywhere. Plugged it all back together, assembled the air box...and it's fine.
I hate these problems.
I did electronics, military, industry, then automotive, did computers from the first (what, 1980 General Misunderstanding?) and why do we need all this on the transmissions.
I remember Caravans....$4800 to rebuild one with all the electronics...and the junkyards were row upon row of perfect T&C, Voyagers, caravans, interiors perfect, paint, glass, no damage...engines were fine...transmissions were shot, every one.
Neons really have this much sensor and transmission computer issues?