Dark Horse Posted January 29, 2017 Share Posted January 29, 2017 Hello All, I understand you can't diagnose a problem without testing. Yesterday, driving my 2000 LS in the morning my check engine light turned on while in motion. No change in car's behavior. I put 6 gallons of regular unleaded (by mistake, as I always use premium) the night before after work. There was about a 20 degree temperature variance from Friday to Saturday morning. I've owned this car for 12 years, and the check engine light has only come on once before. The dealer checked it out and replaced the gas cap, or gas cap seal. When I got to my destination Saturday morning I checked the gas cap. It appeared to be on tight. Should I just drive the car to see if the light goes out? I guess what would be best is to have someone check the trouble code. Any ideas on an approach? I work every day, but Sunday, so my time is limited. Quote Link to comment Share on other sites More sharing options...
billydpowell Posted January 30, 2017 Share Posted January 30, 2017 Go by Autozone and have them test it with their ODB tester and get the codes... why ask ????? you want a bunch of guesses? Quote Link to comment Share on other sites More sharing options...
sha4000 Posted January 31, 2017 Share Posted January 31, 2017 I'm with billy. Have the codes read at autozone and report back here. Quote Link to comment Share on other sites More sharing options...
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