clarification: not in the scanner, obvs, since the PCM would be unplugged. Meaning checking voltage at the O2 connector with a DVOM, seeing if it was...
Not something I have run into yet in 20 years of tuning. Good information to tuck away in the old brain though if I ever see it. I have seen TPS/MAP...
Excuse my lack of knowledge but would you be able to briefly explain the changes you made? As I am pretty new to all of this still I just get nervous...