Pull codes and see what you get if AFM code comes up. It is really probably idle actuator sticking. Don't ask me the logic of that but I have seen it happen before. Remove and clean IAC and see what happens.
I got the venerable 1251 RAM code again. So I'm back where I started. Which is to say, I maybe should have pulled the idle control valve and cleaned it to start with.
I'm just slow, bro'. Sorry 'bout that. But Steve's memory works and is correct.Sean, I'm planning to do just that using the chip from my son's defunct '92S. I just haven't gotten there yet.