i noticed the butterfly on my throttle body was sticking badly. so i had a throttle body from a 93 thunderbird sitting in my garage so i put it on my 87 mustang. now when i start the car rusty antifreeze is pouring out of the exhaust and the car runs like crap. i have a new idle air control motor and tps. i also replaced the gasket. what could the problem be? does the thunderbird throttle body not have ports for the coolant and now its being mixed in with the fuel? i didnt take notice before i put it on. or maybe did i crack the egr spacer? any help would be greatly appreciated.