Have been having difficulty refueling our 2004 xle camry. The auto shutoff on the refueling hoses keep shutting off as if the gas tank is full. Is it a venting problem or something to do with the hose going to the fuel tank?
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Do you mean the Vent Tube?
You may have a restriction within the fill hose - collapsed.
Ground (earth) wires do not have much to do with refueling.
Breather isn't electronic though if car operated without the fuel cap on you could get a Trouble Code. Recheck the vent HOSE and the fill Hose.
First, This can be caused by trying to refuel with the engine running. If the engine was running when you were refueling, the evaporative emissions system could have been in PURGE mode at the time. This will cause the vent solenoid for your fuel system to be closed and the air trapped inside the fuel tank is what was causing your problem. If this is the case, shutting the ignition switch off when refueling will fix the problem.
Otherwise, the vent solenoid could be sticking or the charcoal canister could be saturated. The canister could be coming apart inside and clogging the vent solenoid with charcoal pellets. There are Technical Service Bulletins (TSBs) covering this subject on several Ford models. However, I did not find any TSBs that apply directly to your model. So, to put it simply, your EVAP system as well as your fill tube should be checked for resrictions. If you did not try to refuel with the engine running, my bets are on a sticking vent solenoid valve.
One thought came too mind one this one and that is over-fueling, on todays cars you have too be carefull not to over fuel, if you keep pulling handle on gas pump to get that last .25 in, all you do is stuff fuel in all the emmissions or vapor lines for the venting of fuel tank back to engine. I dont know if this is whats happening but I thought it was worth passing on this info. my rule of thumb is to let pump shut off first time give it one more pull and after is shuts off second time thats it. dont keep forcing fuel in car. hope this helps.
vent control valve on evap canister is stuck closed or outlet hose from valve is clogged preventing pressure in tank from venting during fill up and difficulty refueling.if it is valve and mounting screws arent seized....about$200.
on your fuel tank their is a vent line from the tank that comes back up to the main fuel inlet line that is to let the air from an empty tank escape while fuel goes in, if that vent is not working properly then the fuel cannot go in quickly because the air in the tank has no where to go. The hose is made of rubber and may have become fatigued and kinked on a sharp corner. You will have to go underneath the vehile and inspect where vent line from where it exits the tank and goes back up to the main inlet line. You may have to replace the line.
Since you don't usually fill up at the exact same pump all the time, and this continually happens, it sounds more like your gas guage may be broken, rather then a default with the tank itself. Try measuring the miles or kilometers you get and compare it to ur car manual to verify this.