sinstrex

iTrader: (2)

It usually happens when I'm filling gas. the car suddenly idles rough and the rpm goes as low as 200 rpms and goes up to 1100 and this continues until i start driving again. It also happens sometimes when i stop in traffic.
Any ideas what could be the problem?

Thanks

sakataj

iTrader: (182)

why are u filling up when the car is on?

excluesive

iTrader: (10)

you're supposed to turn off the car before you fill gas. Have you checked your user manual recently or any safety signs at the gas stations?

Jewcano

iTrader: (4)

What has been said buddy, car should NEVER be on when you are filling up, that's a HUGE hazard.

McKrevice

iTrader: (1)

oysgs430

iTrader: (2)

WOW lol are you really filling up the car with the car running?

tinman

The Lex GS has a pressurized gas tank. Filling it up with the fuel pump running is best avoided.

If it happens when you are in traffic, does your check engine light come on?

VNN326

iTrader: (21)

LOL wow..... like what everyone said the gas tank is presureized. youre probally putting air bubbles in your fuel lines

porn-adkt

iTrader: (37)

you are messing with the evap system when you do this. get ready for some evap Codes to pop. YAY!!!

ZippyGuy

iTrader: (9)

The OP hasn't responded, I think he gets the point.

Kbueno

Surprisingly, I see alot of people doing this, my friend runs his f150 all the time when filling. Seems to have no issues other than being dumb.

excluesive

iTrader: (10)

i agree, even when a person uses the full service stations around me, they never turn the car off, nor do the attendants tell them to do so.

When I fill up on the NJTP, these guys are so eager to fill the gas, that if I pull up with the filler door open, they unscrew the cap before I even come to a full stop. I yell at them for this...

Inspiredm3

maybe need to clean your throttle body?

tinman

throttle body, idle air control valve, PCV valve, sanity. Whatever.

excluesive

iTrader: (10)

sanity lol