MSefi.com read only forum (Jan.15,2018)

That fixed it, thank you, thank you, thank you. I guess the warning in the manual about not changing settings you do not understand is really important....

Here is the MSQ file. (first time I have attached anything on the forum, hope it works)
megasquirt201104052106.msq
I procured a replacement for the TIP 102 and upon checking it, realized my old one was still good - I had not noticed that it is a Darlington and does not Ohm out like a regular ...

Reading over the question I posted earlier today, and have a correction. I was turning the Coolant temp pot on the JimStim and seeing/hearing the idle air control valve change position until it stopped responding. Don't know why I typed "throttle".

I have assembled my MSII and JimStim and was checking out the output signals on the bench. I used the TIP 120 transistor circuit described in the manual to work with my Ford PWM idle control valve. I connected the idle control valve to the IDLE output and (after setting up reasonable PW percentages ...

When I assembled my MS II and JimStim, I had no RPM readings on Megatune and O2 was stuck at one number. I had set up my ignition to use a Ford 36-1 trigger wheel and VR sensor. I wasted lots of time troubleshooting the O2 circuit. When I gave up on O2 and started looking at the RPM problem, I ...