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Duane, I'd been having similar troubles to what you've been describing lately, and after a number of mis-steps (including a new O2 sensor), the solution was a new throttle Position Sensor switch.
The new switch helped somewhat at first, and then I PROPERLY adjusted the switch using the feeler guage method as described in the 700 FAQs.
Also, big hose that leads to the throttle body had a small tear in it, one that was no visible from above. I only noticed the tear after removing the hose to more easily adjust the TPS. I've patch it temporarily, until I can get a replacement.
My idle no longer hunts and rolls. No more two-footed driving.
Good luck.
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