I apologize, but I have searched until my eyes hurt and cannot find my problem.
Truck in question is a stock 2006. Two weeks ago she started accelerating "odd". I took it to Ford when the CEL came on and they diagnosed and replaced the ICP. Seemed to fix the problem. This evening on the way home, the tach suddenly dropped to 500 rpm and stayed there. A Yugo honked as it passed me! I limped to the side of the road. No matter what I did, she would not go past 500 (or so) rpm. Finally shut her down and restarted and everything is good again. No problems the rest of the drive home. I have not tried to pull any codes yet, but the neither the CEL nor any other light is on. Ideas?