let off the gas and it trys to die?

Answer 1

I had a similar problem.  Your accelerator is wireless and the throttle body needed replacing.

Answer 2

A really plugged up air filter a bad vacuum leak.

Answer 3

Pull the OBD2 trouble codes to see what is not working right. My guess is not the whole engine is firing. There's a 50% chance I'm right. OBD2 would tell you 100% where to look for the problem.

Answer 4

Engine is still cold, clogged egr, bad coils, bad spark wires, clogged fuel filter,

Egr stuck open or cold engine.....scan the computer.

Answer 5

Bring a lighter.