Not fixed.

Not gone away entirely. I replaced the idle air control valve. Later I removed the throttle body and cleaned it thuroughly. This is a must!!!! That helped some. I also changed the filter and oil in the transmission because it would seem to stall when the transmission was cold and would down-shift coming to a stop. That helped too. It still stalls occasionally when cold but I can live with it. However, it stalled the other day at about 30 mph when I took my foot of the accelerator abruptly.