Hi,
From my looking on this site, this seems to be a fairly common problem
but here's my story. I own a used (not previously owned) Saturn which has had its share of problems. Over the summer the SES light came on and I took it to the dealer who said there was "a small emissions leak" but after they pressurized the system they couldn't find anything...and took my money. Two weeks later I was back with the same result (except i didn't get charged). Over the next few months the light would come on and off intermitently, but was fortunately off for the emissions test, which it passed. It has stayed off for two months now but came on this morning. Is there anything I can tell my mechanic to point them in the right direction because I don't mind paying to have it fixed, I'm just fed up with paying for nothin'. Thanks for your time.