Sorry I missed your post, I too have a V8 in my Fiero it is a little different (Chevy 350 Vortec), but I did have cooling issues with mine at first too. There are too many items to go over in the thread, I can give you more info and maybe get more info from you about what cooling system layout looks like and what parts it has inline. If you want to talk email me you phone number to info@milehighfieros.com and I will call you and see if I can help with your cooling problem.

If you could take a bunch of pictures of the cooling system and post them or put them in a Photo bucket folder that would be a big help then I can look at them when we talk.

http://www.cardomain.com/ride/2619515