Stop in your nearest auto parts store and ask them to scan your car for codes. Get the 4 digit number/s and post back here.
AutoZone will read codes for free.
Check your gas cap too. I've had a couple cars where it was the O2 sensor that was causing it.
Looking for a Used Outlook in your area?
CarGurus has 517 nationwide Outlook listings starting at $1,700.
Search Saturn Outlook Questions
Saturn Outlook Experts
Related Models For Sale