2002 Saab 9-3 repair Question

first things first there is no 6 cyl 9-3 model year 2002 if your check engine light came on ,u will need to get the code read first to find out what is going on with your engine ,u can buy a cheap hand held device at places like pep-boys plug in under your d/s dash DLC connector port read code or codes like get back to us here,good luck.