Come on guys stop raggin on him. Dude you have done one of two things: #1 like they said you might have a bad spark plug #2 which I think is correct You have blown your motor. That loud pop you heard was one of your pistons detnating. You should prob get a proffesional to look at it. One question though. Do you always drive your automatic like that(shifting like it's a five speed and all)? If so That's prob what caused it. Your car has an automatic ECU which is a whole lot different than a 5spd in many ways and your engine just could not handle it. That and maybe a lack of oil. When was the last time you changed it?Again I hate to be the one with the bad news but you may be in the market for a new motor soon!