Ok, after fixing the engine cutting off problem, my 97 GS 2.0L non-turbo runs ok, but after she warms up, it develops this very annoying chirping / squealing noise coming either from the middle or right side of the engine. It disappears when you throttle it and almost disappears when you put it in gear (auto). Here is a YouTube clip of it..

97 Mitsubishi Eclipse GS 2.0l making chirping noise - YouTube

What do you think?