Just happened this morning. When I try filling the pump shuts off in about 10 seconds like the tank is full. I tried pulling the pump nozzle out about half way and it didnt change anything, still shut off in about 10 seconds. The check engine light has not come on. Truck runs fine. Since i've had the truck my purge valve has made a hissing noise that would come and go every day. When it does making the hissing noise, if I pop off the gas cap it will go away but eventually come back after the cap is put back on. Would these two problems be caused by the same thing? I have heard the hissing noise is normal. I hope it is just a clogged vent tube that I can clear out easily. Thanks in advance for any info.

 

Did you try another gas station?

 

Yes and had the same problem

 

Do you think it might have something to do with the gas pump?

Sometimes when I am pumping gas, it will shut off a couple of times, and it has nothing to do with my truck.

Does it only happen at one gas station?

 

More than one gas station so far

 

Our car used to do this, I found it was just the way I was holding the nozzle. Try pushing upwards more, or pulling it out just a little.

 

Tried holding the nozzle in as many different ways I could and it kept on doing the same thing no matter what.

 

Yea this happened to me a couple times. I just pushed the nozzle in more and it seemed to work.

 

I've never heard of this, But i don't really see how anything can be messed up? is your filler neck broke? are you leaking gas when you fill up?

 

Everything seems to be just fine and nothing is broke and no leaking. Been researching this issue tonight and have come up with quite a few possibilities on this but just need to find the actual reason causing this to happen.

 

Someone played a trick on a friend of mine by stuffing a rag into the filler tube where you couldn't see it.
Really ticked him off whenever he got gas.Took him forever to fill up until he found out and fished it out of there.

 

Mine even backs up on me 80% of the time and gets all over the side of my truck. It gets pretty annoying... I need a new filler..

 

Problem solved!! Well at least so far. I took the vent hose off the filler neck and put a small hose inside of of it and blew through it and it cleared. Did the same on the metal hose that is part of the filler neck. Drove with the gas cap off until the gas cap light went on (read this on another forum to do) then put cap back on, light went off after a while, drove another 10 miles back to the same gas station I originally had the problem with from the beginning, filled up at the same pump and now all is well!! Thought it was going to end up having to replace the vapor canister but so far so good. Hopefully no more issues but if so the next step would be the canister.

 

Nice!

This is a problem rarely heard of.

 

This is a common problem where the purge vent solenoid on the top of the tank goes bad or the vent gets clogged with mud or spider webs, most commonly spider webs.

 

old post and going out on a limb. But My 04 keeps kicking the pump off. Truck was parked for almost 3 years so I thinking wasp or spiders clogged something. Where is the vent? on the tank or charcoal canister?

 

As far as I know it vents out the charcoal canister. That catches fuel vapors so tank can be vented without venting gas vapors into the atmosphere.

 

Ok, I'll drop the spare and see if the vent there is plugged

 

interesting location. My 94 has the charcoal canister under the hood near the battery.
from what I learned about the evap system. Back in the day they just used to put a vent on top of the gas tank. To prevent pressure building up. The tank wants to expand and contract with changes in atmospheric pressure. The vent keeps it from sucking in or expanding out and jacking up your fuel pressure on a hot day. But gasoline is a solvent, constantly trying to evaporate. So that vent would leak out quite a lot of fuel vapors. Car would stink of gas and it contributed to smog. So they created a somewhat elaborate solution. To vent the tank to atmosphere but also capture the fuel vapors. Charcoal canister somehow does that. Catches vapors and condenses them so a purge solenoid can send them into the engine to be burned and not leak out into the air.

 

yeah, My 04 charcoal canister is above the spare tire