Thought I'd better post this right away in case anyone else is thinking about buying a A/F meter for this car. Don't do it yet.
Today I discovered that the SRT-4 computer conditions the O2 signal so that the range is from 2.5 to 3.5 volts. From the FSM, "The O2 sensors produce voltages from 0 to 1 volts (this voltage is offset by a constant 2.5 volts on NGC vehicles)." I installed a new A/F meter and it read full rich all the time, even with the key in the "run" position and the engine shut off.
I've already asked Darren Dawes if he will tackle this problem.
Today I discovered that the SRT-4 computer conditions the O2 signal so that the range is from 2.5 to 3.5 volts. From the FSM, "The O2 sensors produce voltages from 0 to 1 volts (this voltage is offset by a constant 2.5 volts on NGC vehicles)." I installed a new A/F meter and it read full rich all the time, even with the key in the "run" position and the engine shut off.
I've already asked Darren Dawes if he will tackle this problem.