Simply unplugging the Idle control unit fixed the problem.
Set the idle screw till she idles at about 800 rpm, put it in gear and goes down to about 600 rpm or so the tachometer says.
The numbers sounds low to me but it has alot better idle quality and idles lower, has a more responsive throttle and is a bit more peppy.
Just feels better, I'll bet it will get better mpg now also. I hope.

91 (Gen1) Monty, 3.0L V6, Auto 4 Door.
Disabled Driver.