car is missing bad. it runs good while it is cold. what could it be.

What is your question?

i have replaced spark plugs, coil pack strips 1, 3 ,5. intake put new gaskets on it. and the car is still missing. it kinda bucks, and almost sounds like it is flooding. I can't afford to spend much more on this car. would you please try to give me an idea of what it is. where is the controlled module for a 3.0? we have also read that, may be the problem. please help