I agree with the IAC valve - I wouldn't clean that - its too sensitive of a part and doesn't really get dirty anyway.
The throttle body plate though is one that I have cleaned. The Teflon coating doesn't do anything to begin with, as the damned thing gets totally coated with carbon and sludge. I also used a cleaner that claimed it didn't damage such coatings. I mean the whole point of the coating is to prevent carbon and sludge build up from sticking. But if its already on there, then the point of the coating is already lost. IMO, a clean throttle body with no Teflon coating is better than a Teflon coated throttle body loaded with carbon and sludge.
'96 Contour SE, black / opal grey, MTX, every option, KKM intake, resonator removed, Flowmaster Series 40 DeltaFlow, GoodYear Eagle HP's, 115k miles, new paint 7/01. Driven cross-country 4 times.
'70 Corvette Stingray Coupe, Cortez Silver, 454 bored to 462, Muncie M21, too many mods to list, lots of fun. 335 rwhp / 365 rwtq
'02 Corvette Z06, Electron Blue / Black, every option. Stock for now...
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