1998 Saturn SL "change lower o2 sensor 98" Questions

...O2 SENSORS, SPARK PLUGS, MASS AIR FLOW SENSOR, FUEL FILTER, AND THE IDLE AIR CONTROL VALVE. AFTER RESETING THE CODES I GET ABOUT 50 - 60 MILES AND THEY ARE BACK. PLEASE HELP. I have 98 explorer im ...

...o2 sensor if this is bad the computer won't adjust the timing another reason you're smelling fuel . hope this helps you and good luck! I had the same problem,1998 z71 5.7 l r code engine, a buddy who ...