it also dies when i put it in drive, it will start back up if i press the accelerator all the way to the floor. could a clogged cooling system(-heater core-radiator- bad thermostat)? And dude, i changed the crank sensor, didn't do anything

 

Cooling system won't have anything to do with, unless the problem only shows up when the engine is over-heated......

have you cleaned the throttle body? Replace the IAC motor?