When I fill the gas tank the gas gushes out when its full. I don't "top-off". The dealership called it a gas leak, and said it will cost $347.00 + tax to repair. This is for a solenoid and vapor canister. Does this sound right?
I have the same problem - the gas pump clicks off when the tank is full but gasoline gushes out after the pump has stopped. I never top off my tank & this has happened a different gas stations.
You may need this: GM part #15131046. Google the Jeep Forum for details. This fixed my 2007 Ford Expedition EL recently as well. It was also overflowing and spewing gas all over the ground when the pump shut off. This is no longer an issue. You can read about my experience on the Ford Expedition forum. Google "justinp973 ford expedition forum"
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When filling up do you top off the take or stop when the pump shuts off ? Over filling to the point the vapor canister is full of fuel ? Gas tank filler tube is rusted an leaking , Hose for evaporative emissions leaking ? Look under the vehicle at the fuel for a crack vapor canister etc... Your vehicle is a 2002 an these parts don't last for ever . Any warning light's lit on the instrument cluster ? Check engine light etc.... Do you know what a evaporative emissions system is ? It stores fuel vapors instead of venting to the atmosphere .
Chrysler and Dodge have a fuel vapor filter that allows air out of the gas tank but filters the harmful fumes. Usually the problem happens from topping off your gas after the gas pump stops due to the automatic shut off and then putting more gas in the tank (to make the bill an even $50. or to the next $5 increment, or pumping more in just because it fits). Anyway the filter gets saturated with gas, is not able to breath, and causes a vacuum in the tank. Because of this, the anti-siphon ball is not able to float around and sits at the opening of the fuel fill tube and won't allow any more gas to be put in (acts like the car is full). If you pump super duper slow like put a nickel to hold the gas pump handle, it will trickle in without a problem, but it takes forever! Solution, get the filter replaced and don't over fill the tank.
Also, be sure to not over-fill the gas tank. When filling the tank, when it sounds full (you can hear gas gush up the filler neck) and when the filler clicks off the first time...don't be tempted to keep clicking more gas into the tank because over-filling can cause a variety of problems (including setting the light) and can eventually saturate/ruin the fuel vapor canisters.
the top of the tank has an opening where the gas guage sending unit is installed. The gasket can give out and it can leak when the tank is completely full, but won't necessarily show signs of leakage when the tank is partially full. Requires dropping the tank and changing the gasket... hope this helps.
I'd have to check your evap system. Any applicable trouble codes?
When you fill-up, the air in the tank has to go somewhere or it will burp back-up the fill pipe and shut off the gas pump. I'm not that familiar with your particular emission system. Just my 2 cents.
its most likely either broke the seal on the halfway of the tank or the fill spout has become damaged and needs replacement. id start by testing the pressure of the tank then deciphering whether or not its the tank or the fill spout.