HELP: Check Engine Light - Gas Cap - Page 2 - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

hrpiii · 12-21-2016, 10:15 AM

I have also seen this with other cars, in the winter months running lower octane gas. They were able to resolve the issue with the check engine light running a higher octane gas. Very odd, strange, but just an FYI.

CamaroFred · 12-21-2016, 10:32 AM

Quote:

Originally Posted by hrpiii

I have also seen this with other cars, in the winter months running lower octane gas. They were able to resolve the issue with the check engine light running a higher octane gas. Very odd, strange, but just an FYI.

Yeah, it isn't worth the few cents you save buying cheap fuel.

Mr. Stacy · 12-21-2016, 11:03 AM

I got the CEL for the gas cap a few times. Couldn't figure it out, the code was something to do with the vapor sensor.

Found out it was because I was topping off the gas when I filled up. No more topping off... no more gas cap warning.

sherob · 12-21-2016, 11:56 AM

Quote:

Originally Posted by Mr. Stacy

I got the CEL for the gas cap a few times. Couldn't figure it out, the code was something to do with the vapor sensor.

Found out it was because I was topping off the gas when I filled up. No more topping off... no more gas cap warning.

+1

satxrider · 12-23-2016, 12:52 AM

I was having similar issues. I replaced the gas cap several times and was just about ready to pay over $500 to get the evap canister replaced but decided to do a careful check on the vacuum lines in the engine bay first. Found a cheap hard plastic line broken on both ends on a line that goes from one side of the throttle body to the other. Replaced it with $1 of rubber hose and problem fixed. I highly recommend you check your vacuum lines.

Sent from my SAMSUNG-SM-G891A using Tapatalk

12-21-2016, 11:03 AM	#17
Mr. Stacy El Duderino Drives: 2011 2LTRS Convertible Join Date: Jan 2016 Location: Seattle Posts: 2,194 View My Garage	I got the CEL for the gas cap a few times. Couldn't figure it out, the code was something to do with the vapor sensor. Found out it was because I was topping off the gas when I filled up. No more topping off... no more gas cap warning. __________________ I bowl. Drive around. The occasional acid flashback.

12-23-2016, 12:52 AM	#19
satxrider Bad 45th Drives: 2012 45th Anniversay Edition SS Join Date: Apr 2014 Location: San Antonio Posts: 548	I was having similar issues. I replaced the gas cap several times and was just about ready to pay over $500 to get the evap canister replaced but decided to do a careful check on the vacuum lines in the engine bay first. Found a cheap hard plastic line broken on both ends on a line that goes from one side of the throttle body to the other. Replaced it with $1 of rubber hose and problem fixed. I highly recommend you check your vacuum lines. Sent from my SAMSUNG-SM-G891A using Tapatalk __________________ - Carl 2012 45th Anniversary SS - LS3 Magnuson TVS 2300 Supercharger / Alky Meth Injection / Lingenfelter GT12 Cam / Kooks LT Headers, 3 inch exhaust & QTP electric cut outs / Monster LT1-S Twin Disc Clutch / MGW flat blade short throw shifter / Haltech CAI / VMax Throttle Body / DSS Stage 3 axles/ BMR Trailing Arms, Toe Rods, Suspension Bushing and 1" lowering springs / Taylor 8MM Plug Wires / Tuned by Henderson Performance Technologies / EBC dimpled and sloted rotors / G2 Painted Calipers / GM Tower Strut Brace / ZL1 Factory Rep Wheels

12-21-2016, 10:15 AM	#15
hrpiii AKA "Beefcake" Drives: 2023 ZL1 Sharkskin Join Date: Oct 2009 Location: Indy Posts: 8,529	I have also seen this with other cars, in the winter months running lower octane gas. They were able to resolve the issue with the check engine light running a higher octane gas. Very odd, strange, but just an FYI.