Problem with O2 readings
Problem with O2 readings One of my friends has a 98 Z with JPR heads and a TH 220 cam that was running great last week but he just got it back from ed wright , which may have nothing to do with the problem, but now his car is MV the O2's go up to is 475mv or so. I know they should go up to 850-900 at WOT. He has replaced the o2 sensors but this has not fixed the prob. What could be wrong we have looked at the wires and they are not burned. There is no visiual prob, could the tuning be wrong in it and the timing is only around 26 degrees at wot. What could be wrong?
