Rough idle on full tank of fuel
#1
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Thread Starter
Rough idle on full tank of fuel
I'm getting an intermittent rough idle after a gas fill up. I initially thought is was bad gas but it's recently occurred at my trusted filling station. The car only exhibits this behavior when completely full. I never add beyond the pump's self stop unless I know for sure the tank isn't near full. Anyone else notice this on their car?
#3
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Thread Starter
I appreciate the feedback, Carl. I'm at the local dealership now. We attempted to recreate the issue by doing a ride-along to top off the gas tank. The car behaved today, though.
There were no emissions codes present in the scan.
There were no emissions codes present in the scan.
#4
Race Car
This may help?? carl
Vapour Canister Purge Valve/how does it work
https://rennlist.com/forums/924-931-...s-it-work.html
http://forums.vwvortex.com/showthrea...r-filling-tank
Vapour Canister Purge Valve/how does it work
https://rennlist.com/forums/924-931-...s-it-work.html
http://forums.vwvortex.com/showthrea...r-filling-tank
#5
Rennlist Member
I had a similar symptom in a Buick Enclave. The evap system purge valve solenoid failed in the open position. When you filled up, it pushed vapors into the system/tubing which were immediately sucked into the engine upon cranking/starting as opposed to when the computer told the valve to open. It was sort of like flooding the engine. If it runs fine after a few seconds, it may be that same issue.
I do not recall reading about anyone having this same issue, however.
I do not recall reading about anyone having this same issue, however.
#6
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Thread Starter
Those two mentioned scenarios don't match my issue. I have a slight rough idle that lasts for 2min (when active) and within a magnitude of 200rpm.
The dealer said to bring the car back if the issue becomes more prevalent or if I can find the conditions to reproduce it for them and they will be able to better diagnose.
The dealer said to bring the car back if the issue becomes more prevalent or if I can find the conditions to reproduce it for them and they will be able to better diagnose.