JK-I assume you took it off to clean it. Did you take the electro-magnet off (the part with the bak-a-lite on it)? You're right, it should only move about an 1/8 of a turn. Were you rough with it? Pry on it? I cleaned my DIL's and had no problems with it. I replaced it for other reasons, but it worked fine and so I still have it. I will look at it tomorrow but I feel rather sure if it moves 360 degrees that it is history. Full travel - open to closed is very little.
Code 58. I only took the large hoses off the throttle body and sprayed the heck out of the iac through the port inside the TB. It was initially totally frozen. Via more spray and turning it, it finally freed up but now travels the full 360. BTW, I really appreciate the reply