I put the new o2 sensor in and rest the computer and it run good for a few days. Now its back to doig it but it dont seem as bad as it was. For any one that dont know it is a 5.2 with around 150,000 on it. If the motor is hot when you start it up it just floods really bad smokes and you can smell the raw gas. It will allso do this when i put gas in it and go to leave the gas station. It has a new battery on it that ant but about three mounths old and it has done this as long as i have had it so i know its not the battery. Oh this might help it runs fin in cold weather.