2.0L LNF Performance Tech 260hp and 260 lb-ft of torque Turbocharged tuner version.

CEL "check gas cap"

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Old 12-08-2012, 12:36 AM
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CEL "check gas cap"

hey guys, my 08 LNF said on my dash "check gas cap" and then threw a CEL. i wish i had the code number but i dont right this second. the gas cap was on but i put a new gas cap on it for my car to see if that would fix it. after driving it a few times same exact thing happened. anybody know what this could be? thanks!
Old 12-08-2012, 12:46 AM
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Originally Posted by mattdracing
hey guys, my 08 LNF said on my dash "check gas cap" and then threw a CEL. i wish i had the code number but i dont right this second. the gas cap was on but i put a new gas cap on it for my car to see if that would fix it. after driving it a few times same exact thing happened. anybody know what this could be? thanks!
Check for a leak on the filler neck.
Old 12-08-2012, 09:13 AM
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Funny, I just had that pop up, but had no code. I made sure the cap was snug, and it hasn't come back yet. Yesterday, I did notice my car almost stalled after starting it, lol. It could be P0496, in which the EVAP purge solenoid is the culprit. I checked mine, and I couldn't blow through it. Easy to check it (2 min. or less). So we don't play the guessing game, we need the code.


What are your mods, and did you recently tune your car?


Last edited by prevsrt4owner; 12-08-2012 at 09:21 AM.
Old 12-08-2012, 02:32 PM
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Is the gas cap on correctly?
Old 12-09-2012, 10:45 AM
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Originally Posted by SSlobalt
Is the gas cap on correctly?
oh yes lol gas cap is on snug haha
Old 12-09-2012, 10:50 AM
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Originally Posted by prevsrt4owner
Funny, I just had that pop up, but had no code. I made sure the cap was snug, and it hasn't come back yet. Yesterday, I did notice my car almost stalled after starting it, lol. It could be P0496, in which the EVAP purge solenoid is the culprit. I checked mine, and I couldn't blow through it. Easy to check it (2 min. or less). So we don't play the guessing game, we need the code.


What are your mods, and did you recently tune your car?

DDMWorks - EVAP Solenoid Testing and Replacement on Ecotec engines - YouTube
thanks! i will give that a check...i have catless dp, CAI, IC piping, and trifecta tune. i havent had any issues with the car as far as it starting up or running everything has been completely normal but it threw a code and keeps saying "check gas cap" even though i know the gas cap is plenty tight haha
Old 12-09-2012, 12:06 PM
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Originally Posted by mattdracing
thanks! i will give that a check...i have catless dp, CAI, IC piping, and trifecta tune. i havent had any issues with the car as far as it starting up or running everything has been completely normal but it threw a code and keeps saying "check gas cap" even though i know the gas cap is plenty tight haha
Yeah, just check that solenoid and give us an update.
Old 12-09-2012, 12:29 PM
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Originally Posted by prevsrt4owner
Yeah, just check that solenoid and give us an update.
ok cool deal i will do that...thanks for the help! i will give an update later today or tomorrow
Old 12-11-2012, 03:26 PM
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Yeah Matt mine was doing that same thing and it ended up being that front evap solenoid. If you don't need it today, check ebay. I got one for $3 on there.
Old 12-11-2012, 11:53 PM
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Originally Posted by BNRacing
Yeah Matt mine was doing that same thing and it ended up being that front evap solenoid. If you don't need it today, check ebay. I got one for $3 on there.
ok cool thanks! im glad to know i wasnt the only one with this odd problem haha
Old 12-14-2012, 12:21 PM
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update: the problem was the EVAP solenoid so its all fixed now! thanks for the help everyone that made it much easier!
Old 12-14-2012, 01:00 PM
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Originally Posted by mattdracing
update: the problem was the EVAP solenoid so its all fixed now! thanks for the help everyone that made it much easier!
Score! Glad it was fixed.
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