Discussion Thread: How To: throttle cable mod
This seems to be pretty common knowlage, but if anybody doesn't know, here it is:
Over time, the throttle cable stretches and the housing seats more into its ferruls, thus, adding play to the gas pedal. You never feel this because a) it happens so slowly and the gas pedal drops down more so theres no "free" period (where you push on the pedal and nothing happens) while youre pressing on the gas. This is an easy fix, and its free. All you need is a few zip-ties and 10 minutes.
Crawl under your dash and find the throttle cable. There's two of them under there, one is the right one, the other one I have no idea what it does, but dont zip tie it. What you want to do is pull the gas pedal off the floor and wrap as many zip ties as you can fit around the excess throttle cable sticking out. I fit three around mine and the difference is huge. Once you've done this, your truck can fully achieve a wide opened throttle. My friend Tom did this and claims his truck down shifts smother now. Whether of not it helps shifting is up to you. I dont know. But you will get better response at the pedal.
I know this works on Rangers and Explorers, I'm not sure what else.