I think the how-to is referred to as the throttle hang (TH) fix in the how-to area. Basically you pull the end of the IAC bypass hose off of the upper intake manifold (UIM) fitting. Push the prilled pipe cap into the hose, and then reconnect the hose. The pipe cap is too big to go anwhere so it's safe just sitting in the hose. The IAC bypass hose fits onto a pipe stub sticking out of the UIM back by the EGR and IAC valves.
The duratec EGR and IAC valves mounted on the UIM (ignore the A, B, & C)
