2001 ford explorer sport turns off when i let go of gas

Not a simple fix, but If you can't afford a mechanic, I'd start by checking the fuel pressure with a gauge. If it's lower than spec,, you have to figure if the fuel pump, or fuel regulator is the issue. Start researching on how to check this, youtube is a good source for some videos and how to's. If you change either, I would also change the fuel filter. It also could be the throttle body or other sensor or issue. Is the Check engine light on or other light when the car is on? Do you have the right tools and diagnostic equipment and place to work on it?

Thanks tom ill have my cousin check it out like you said.