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85WHITEZ51 - No Idle probs here. I doubt their related. I would (if you haven't already) clean the IAC, and set min idle. I have written a detailed description on how to clean the IAC, and directions for min idle speed are in Tech Tips.
Another thing you may want to look at is your TB. Even though it didn't affect my idle, my butterflies did not completely close, because my idle screw was in too far. Also look around for vacume leaks, and recheck the TB and Plenum bolts to make sure their tight. BE CAREFUL not to strip them!!! The threads are aluminum.
Good Luck, let us know if this works. :flag http://forums.corvetteforum.com/zerothread?id=312460https://www.corvetteforum.com/techti...D=55&TopicID=2