Weird Idle after I fill up on gas...

[lytlec]

So the last two times I have filled up on gas after I turn my car on it idles really rough...the whole car shakes until I give it a little throttle than it goes away. It's been cold outside.

What is causing this? Anything I should look into?

[Ying]

Where do you typically get gas? Sometimes switching brands can do it. Happened to me a while back b/c Hess and Sunoco were the two closest to my usual destinations. Happened when I went from one to the other. Now I'll run out of gas before I go anywhere other than Sunoco.

Could also just be because you're car's warm and it idles lower than when you turn it on cold.

[Donkey]

One common problem/theory. When you fill up slow down once your getting close to full. If you over fill and some/alot spills into the little hole by the gas gap it goes back into the evap/charcoal box causing this problem. For more info search on the NASIOC. It will verify this happens alot.

[mudferret]

What month do your local gas stations there switch to winter gas? It's typically not a smooth transition from one to the other, one day the tanks are full of wonderful summer gas, the next day they're full of winter.

Here it's November...ish, but I'm ~10 deg north of PA.

[lytlec]

What month do your local gas stations there switch to winter gas? It's typically not a smooth transition from one to the other, one day the tanks are full of wonderful summer gas, the next day they're full of winter.

Here it's November...ish, but I'm ~10 deg north of PA.

Well I filled up today, it didn't do the rough idle thing. I will do some research...but it appears that i shouldn't worry about it...it has only done it a few times! Thanks!

[06wrx4me]

Dont over fill and make sure to tighten the gas cap.