You need to reset the ECM! You accomplish this by disconnecting the positive and negative battery cables an touching them together. After that replace and start vehicle. set idle by letting it idle for a few minutes, then drive the truck for a short distance during stop and go sequences. After that drive for a distance at a constant speed. Hope this solves your problem. Hit me back if this doesn't cut it for you. I have a Ford Master tech who can help you hopefully.