Engine charcoal canister may hate me now...

Damned Corolla purge canister...

I've been told that once a severe overflow occurs, the canister is saturated and there's nothing you can do about it except pray.

Don't disconnect anything. It will set multiple DTCs and only confuse a mechanic. If you have a 96 or newer, you have OBDII which should be able to check the functionality of the EVAP system and if not, many places have an EVAP system tester. I suggest taking it somewhere and having it daignosed. Then you will at least know where to go from there. If the car is under warranty, they have to fix/replace it anyways. Keep your service reciepts!

Who told you overfilling is bad for the charcoal canister? I'm not saying their wrong, but I'm just curious what the reasoning is. Liquid gas is bad for it indeed.

I've always assumed that the gas filler nozzle is responsible for shutting off.

charcoal canister may hate me now...

I was at the gas station this morning and the friggin gas nozzle didn't automatically shut off. So, I got to 8.2 gallons and then it started spewing fuel all over the place.

I'm paranoid about my charcoal canister crapping out on me seeing as how so many Corollas have been afflicted with this problem. And I know that filling the tank too full is a very good way to bring the evap canister to an early death.

Should I just disconnect the purge and air inlet valves for a while until I can run the tank down some or what you all think??

Trav

Well, yeah - the purge port FROM the tank TO the charcoal canister is located at the top of the tank. On most Toyotas, that port is far enough out of the way that liquid fuel won't slosh in there and get into the canister. But for some reason (design?), liquid fuel is finding its way into the canister on a lot of newer model Corollas - with less than, like...50,000 miles. A couple have had it go bad @ around 30K.

I wouldn't care about setting the DTC's - I know it would do that. I'm just saying disconnect the EVAP valves until I can run some of the gas out of the tank and don't have to worry about fuel being forced into the canister. I can clear the codes myself after some of the fuel has been used up...that's what that little EFI 15A fuse is good for

Trav