Wheh i accelerate quickly, or aggresivly, there is a slight rattle from somewhere. I need some help, but if none of you can, i am getting many things done this week at my mechanic so I will ask him. THanks guys.
P.S. i have a GT
If it sounds like the vibration is coming from below the car, just about below your shifter, you should check the catolytic conveter. The heat shields on the cat like to rattle as they get old. Both of my escorts do it around 4250rpm during medium to heavy acceleration. Its like a cross between a rattle and a screetch.