Wow Really??
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On The Tree
Joined: May 2012
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From: Phx Az
Wow Really?? I go to chevron to pump gas of course 91 octane i fill up half a tank as I'm driving out of the gas station my check engine light comes on out of nowhere? But why i don't get it it doesn't make sense what could it be a sensor or what????? Help please thanks ls1tech
Thread Starter
On The Tree
Joined: May 2012
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From: Phx Az
i just went to double check if i screwed it back in right but i think your right cause i don't remember screwing it like 3 times but i can't turn on my car to see if the check engine light will still be on my family is asleep my car is in the garage but still will wake them up its loud so I'm going to have to wait till morning ehh. But i didn't know that would cause a check engine light though?? Thanks for the help
Launching!
Joined: Feb 2012
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From: IL
i just went to double check if i screwed it back in right but i think your right cause i don't remember screwing it like 3 times but i can't turn on my car to see if the check engine light will still be on my family is asleep my car is in the garage but still will wake them up its loud so I'm going to have to wait till morning ehh. But i didn't know that would cause a check engine light though?? Thanks for the help
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
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TECH Enthusiast
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My money is on the gas cap also. My gas was screwed in all the way and I would still get a SES light. It wound up being the cap itself was cracked I replaced it and I've never had a SES light again. Just something to look at OP.
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I kept getting a code related to emissions, and I had no idea what was wrong. Buddy of mine looked at my gas cap and the rubber seal on it was dry rotted. Replaced the seal and haven't gotten the code since.
Teching In
Joined: Mar 2009
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From: Ohio
^This. Happened twice to me, first time was just carbon build up from not being driven much. Nothing a bottle of fuel stabilizer and driving it more couldn't fix. Next time my driver side cat failed so I gutted them. Could be an O2 sensor as well.
Thread Starter
On The Tree
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From: Phx Az
Thanks guys and yes it was my fault i didn't screw it back on all the way rookie mistake but seriously didn't know it would cause a check engine light though i guess i learned something once again thanks. The light went away as i drove to work this morning.
At least it was easy. It's happened to most of us.
Thread Starter
On The Tree
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From: Phx Az
[QUOTE=BigBirdLS1;16373903]My money is on the gas cap also. My gas was screwed in all the way and I would still get a SES light. It wound up being the cap itself was cracked I replaced it and I've never had a SES light again. Just something to look at OP.[/Q
Check out mine imo it looks alright what do you think should i replace it cause the ses light came back on again ever since i didn't screw it back in properly
Check out mine imo it looks alright what do you think should i replace it cause the ses light came back on again ever since i didn't screw it back in properly 
dude just get the car scanned, why guess at what it is.... it is absolutely pointless for us to guess what is causing the problem, when they can tell you exactly what it is after they scan.
Thread Starter
On The Tree
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From: Phx Az
