Why won't my 96' T Bird drive?!?

What is your question?

At first my Tbird wouldn't start so I replaced the fuel filter and pump and now it barely starts and idles but as soon as I put pressure on the gas pedal it starts to make a puddering sound and I have to put the pedal to the floor and hold it there to keep it running but it don't accelerate, it's when I release the gas pedal that it starts to accelerate, all while still in park. The check engine light is on, the car is almost constantly borderline overheating, and I just need to know what I need to fix before I fix everything but the problem and keep spending unnecessary money lol. Someone please help that knows what they're doing. This is my first car and I want it to leave a good taste in my mouth for this classy car.