well about 2 hours ago i took the iac valve off. for anybody wondering were its at, on 2000 5.4 and other similar yrs and models it is behind the throttlebody. it is bolted on to the throttlebody with 2 bolts and has one electrical wire coming out off it. this was my first time doing this and it was very easy to do. i did not clean it out, i was advised not to my the master tech at ken towerys i know and by the workers at napa and pepboys. i wanted to replace it with another motorcraft but of course nobody stocks motorcraft parts like that and since it was after 5pm ford was closed, so i bought mine at Napa for $75 bucks. i forgot the name of the IAC, i think it is a Elkin or something and it has nascar performance written all over the box. i also bought some throttlebody cleaner and cleaned the inside of the throttlebody where the air goes in and arond that gold thing thats in the middle what ever its called. i started the truck and it sounded and ran great. it made the truck sound more healthier if you know what i mean.
ps. the helix TBS that i had on there i removed just to see if there was any difference, in all honesty i dont think i'll put it back on, i'll just have to wait and see how it runs without it.