HELP!!? we have a buick lasabre and it keeps stutterting and then it dies. it will start up again but it keeps doing that and we tried fixing the sparks plugs and giving it new oil. we are trying to hook up the sensors to find out whats wrong but we have a OBD1 computer/reader and a OBD2 connector we don't no what to do. (this car hasn't really been driven alot in the past years) any advice or have any idea what it like sputters then stops ( which the check engine light comes on but goes away when started up again)