[76C10Stepside]

UPDATE: Looks like I have a bad Idle Air Control (IAC).

I found a paper gasket for the IAC in the remains of the TBI rebuild kit, which proves that I did NOT remove the IAC when I cleaned and rebuilt the TBI. As I mentioned before, the kit instructions and exploded view OMITTED the IAC entirely, though it did say to remove all electrical parts before cleaning (thought I had).

I removed the IAC and measured how far the pintle is extended (just over 1-1/16"), then carefully cleaned it per the instructions in the "IAC maybe?" thread. Then put it back in with the new paper gasket and looked to see if I could see the tip of the pintle sticking through the hole into the TBI. NOPE. Then turn the key on (no sound) and checked again. Still not sticking out at all.

Conclusion: I wrecked the IAC when I cleaned the TBI using carb cleaner. Will buy a new one and see if that cures my fast idle problem. Hope this helps someone else avoid ruining their IAC!