I believe you MAY have TWO stuck ICV's, your old one and the "new" one from the totaled car?
Take the ICV apart to clean it. The three blobs on the end, that look kind of like rivets are actually allen bolts with a blob of hard epoxy stuff on them, presumably to dissuade you from taking it apart. Practice on your old one first. I did a little write up on it a couple of weeks ago. Search ICV by barneyhyphen.