So I know this topic has come up on several post. Recently purchased a 92 ls after 7 years of not being into imports. So I was having trouble with a hunting idle/ weird idle. I did my research and switched out the the possible causes of this problem. Iacv/fiac pcv ect. Well one thing I didnt see was the throttle body gasgket $2 that got totally over looked. I sprayed carb spray every were and it was extremely hard to find the leak but I got it fixed. I just want to thank this site and members for the post.