I did unplug the MAF and it stalled several times. after a restart or two, it
settled to a galloping rough idle much worse than before.
This did set off the Check Engine light.
As before, once off idle and accelerating, no issues at all.
I haven't tried the O2 or EGR wires yet, maybe tomorow when I can see.
Right now my plan is to just ride it out. It gets worse mileage, but I can live with that
untill I've got some income to take it to a shop that has all the correct electronic
test equipment to isolate the issue. --At that point it will probably be some $1 o ring
buried deep inside.