U might know the anser. My car broke down right off the highway after about an hour of driving. My check engine light came on when i was driving on the freeway. It drove fine all the way to a mile from my home, which is about 20 mins from the time the light came onwhen i got off the freeway and let off the gas to slow down it shut off. I tried to start it but it wouldnt start. then i tried to start it and kept my foot on the gas. The car kept running, but really rough when my foot was on the gas. I had to drive home while constantly giving it gas. When I let off it shut off. What could this be?

Fuel pump. Go to a autoparts store and ask for a code reader for your car.