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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Does the pump have wick disconnects that required a tool to remove them? There are orings in those as well as a large oring sealing the pump to the tank. Make sure the connectors click when you replace them. The pump should activate with the key on. " not started", you should be able to see if the lines are leaking or if it just your fuel fill overflow hose leading to the fill door alongside the large full hose.
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 .
Sounds like the vent for the tank may be defective. The vent is on top of the gas tank between the tank and the floor of the trunk. Or there is a blockage in the fill pipe for the tank below the connector hose. You may have to have someone remove the tank and inspect it.
There are two hoses running from the filler neck. Either of them could be leaking from the top. There is also a seal on the top of the tank where the fuel pump is that can leak. If your car leaks the whole time you are putting fuel in, I would suspect the hoses. If it only leaks when you get it full, then check the seal on the top of the tank. The top of the tank can be seen without dropping the tank. Remove your back seat and you will see a cover over the fuel pump. Remove that cover and you can see the top of the tank.
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.
You probably have a defective fuel-tank selector valve. Its located on the left frame rail, halfway down. While the vehicle is running, tank"A" is pumping fuel to the engine, while tank "B" is getting the unneeded fuel that is returning from the engine. Thats why it is overflowing.
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.