I own a 1999 Lexus RX300 which I bought new. Recently, when filling the tank with fuel, the nozzle shuts off unless I go very, very slow. It takes over ten minutes to complete a fill. Nothing has ever gotten into the tank that I am aware of, however, I can see a small pipe sticking into the side of the filler neck (which may be a vent return line) about four inches down into the neck which appears to have the end deformed from the end of the filler nozzle bumping it. This small line protruding into the neck is about 1/4" to 3/8" O.D.
Is this fuel-fill problem common to the Lexus RX300? Is this small line part of the vent system? Could the deformation of this line be causing the problem? Can the filler spout be removed for inspection without removing the tank? How does one gain access to the problem area?
My Lexus dealer estimated it may take $2000.0 to fix this problem and did'nt even suggest the possibility of a restriction causing this problem!
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most commonly the evap systems vent solenoid is plugged or inoperable causing pressure to build in the fuel tank as you fill up. this high pressure triggers the gas pump nozzle to shut off as it would if the tank had been filled. replace canister vent
Need to inspect/clean/replace the fuel tank breather. Try this first, as this being faulty will create to much back pressure in the tank, causing the fuel nozzle to shut off quickly. Also, when filling, try holding the fuel nozzle upside down, no known reason why it works, but it sometimes does!
These lights come on for several reasons, but often in relation to air fuel mixture. First, if you recently filled the tank, go back and unscrew and re screw your gas cap until it ratchets . If you are low on fuel, fill the tank with premium and see if the light goes out over a day or so.. If it all goes out you are fortunate.
If you continue to see the light, have a dealer or qualified tech, scope the car and reset the lite In all likelyhood you will need one of 3 sensors. For my money I would ask the dealer to reset and give you the info identifying if it is sensor 1 , 2 or 3 and point out where it sits.Then just buy the part and install. The sensors are like changing a spark plug. They are visible but EXPENSIVE. The other possibility is you might have a dirty throttle valve needing some carb spray inside where the snorkle hose attaches from the air cleaner to the throttle itself. Again the dealer should identify the cause unless you have tester for the ECU.You dont want to replace the wrong sensors because a friend said that was THE one he did. Mine was the front, right near the rad, but I know the mechanic and he is a friend who showed me the readouts and the test procedure while he worked. I had previously cleaned my throttle valve and still had to replace to sensor 3 weeks later, but my fuel economy spiked when it was done.
theres a problem with the pipe that goes from the gas tank to the gas cap.Look under neath and see if the hose is pinched or bent.Another cause could be who ever owned it before had the tank out and they messed up the hose when they put it back in but that is differently the problem..
hi if you look into filler pipe you will see a flap/restrictor just inside this is to prevent wron fuel filler nozzle from entering so unless you put the correct fuel nozzle fully into tank fill pipe and this pushes flap open you will experience slow filling ALSO? to put fuel in tank the air inside must be able to displace emit from tank ok this is done via a hose from tank and is usually clipped along side the filler pipe under wheel arch below filler check and ensure this pipe is clear and also free from kinks? as this if blocked will not allow displacement of air from tank as fuel level increases? hope this is clear enough for you to understand?
There is a fuel tank vent tube that runs down the filler tube to let the air out of the tank as you fill it, these tubes get kinked, replace the tube, this is part of the filler neck assembly so the whole thing must be changed out.