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Toyota Camry: 92 Camry. How does a gas station pump determine when the tank isfull ?

  1. #1
    JoeD
    Guest

    92 Camry. How does a gas station pump determine when the tank isfull ?

    Hi,

    Recently my fuel gage stop working. It now point towards the 3/4 to full
    mark.
    I am wondering how does a gas station pump determine when the tank is full.
    The reason I ask is that I thought I had 4 to 5 gallons in the tank when
    the fuel gage broke.
    When I went to the gas station to fill up, the attendant could only add
    another 5 gallons.
    I thought I needed about12 to 13 gallons more. My manual says I have
    about 18 1/2 gallon capacity.
    I could have been wrong and gage had broken earlier than I though and I
    had a lot more gas in the tank.
    I plan to use the trip odometer to help me determine when to fill up at
    the gas station.
    Based on a conservative 10 miles a gallon, I will fill up after each 100
    miles.

    Thanks in advance for any information.

    Joe


  2. #2
    Doc
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?

    "JoeD" <com> wrote in message
    news:01KQb.23364$news.atl.earthlink.net...
     
    full.



    A cockroach with a small but powerful flashlight is sequestered inside a
    hidden compartment at the end of the nozzle. When you start to pump, he
    shines his light down the filler neck. When the tank is close to full, he
    hits the Push to Talk button on his miniature cell phone and tells the
    foreigner working the Quickie Mart cash register to stop the gas flow.

    Next question please....

    Doc



  3. #3
    Daniel
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?

    JoeD <com> wrote in message news:<01KQb.23364$news.atl.earthlink.net>... 

    Best to go ahead and get it properly repaired. Check the sending unit
    in the fuel tank, under the rear seat cushion.
    Had a similar experience, and the "odometer method" worked well for a
    number of months, until one day, in the "fast lane" having just left a
    freeway interchange with fast moving, heavy traffic, the engine
    sputtered and stopped running.
    Perhaps that answers your first question. Sometimes the auto cut off
    on the filling station pumps are inaccurate and vary enough to cause a
    real problem at some point.
    (I was able to move quickly across four lanes of traffic and coast all
    the way down the off ramp to a mechanic, but easily could have not
    been so fortunate).
    It's been a long time ago now, so I don't remember all the specifics.
    I think I tried to leave a minimum 100 to 150 mile reserve in my tank,
    and I know my calculations were correct, IIRC there should have been
    something like 250 miles left in the tank when the engine ran out of
    gas in my case, so you really cannot trust the pump shut off -- and my
    gauge read accurately (so I thought) when full -- so that should have
    been a verification the tank filled.
    Anyway, just plan to have the gauge repaired when you can.

  4. #4
    JoeD
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tankis full ?

    Thanks for that intelligent and helpful reply.

    What goes around, comes around.

    Doc wrote:
     


  5. #5
    JoeD
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tankis full ?

    I was hoping not to have to spend $150 - to $200 to get this repaired.
    Thanks for the suggestion, Daniel.

    Joe

    Daniel M. Dreifus wrote:
     


  6. #6
    Doc
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?

     
    news:h7UQb.24188$news.atl.earthlink.net...
     
     
     

    Especially to a dull, humorless guy who tools around the wrong side of the
    tracks in a 14 year old car...

    Doc



  7. #7
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?


    "Doc" <com> wrote in message
    news:bxYQb.24944$news.atl.earthlink.net... 
    full 

    http://howthingswork.virginia.edu/water_faucets.html



  8. #8
    JoeD
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tankis full ?

    Interesting. Thanks

    com wrote:
     


  9. #9
    Tegger®
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?

    JoeD <com> spake unto the masses in
    news:01KQb.23364$news.atl.earthlink.net:
     


    There is a small square-section rod in the filler nozzle. When the gas
    starts splashing back, it pushes this rod rearwards, tripping the mechanism
    and shutting off the flow.

    It's only as accurate as the amount of backsplash your tank (or its filler
    neck) tends to give. some cars are so designed that you need to insert the
    nozzle only part way in to prevent early shutoff.


    --
    TeGGeR®

  10. #10
    Daniel
    Guest

    Re: 92 Camry. How does a gas station pump determine when the tank is full ?

    JoeD <com> wrote in message news:<y9UQb.24193$news.atl.earthlink.net>... 
    Another posting today reminded me that the Camry has a red light at
    the bottom of the fuel gauge that reminds you to fill up before
    running totally dry. My older Toyota truck that ran out of gas didn't
    have that.
    Still, the manual recommends not letting the level go below the 1/4
    mark to help keep enough gas in the tank to cool the electric fuel
    pump, so you could attempt to do that with your odometer calculations
    with the red light as a backup.
    Just think, if you had a new car, you'd probably be paying $150 - 200
    or more every month.
    If you can use your own tools, or know someone who can, or check
    prices at an independent mechanic, you may be able to find a better
    price.
    The Haynes repair manual shows how to do this repair. You remove the
    side bolsters on the rear seat, (one or two bolts) then the seat
    cushion (lifts out from the bottom). There is an access plate in the
    top of the gas tank that will then be visible, and you remove the four
    or so bolts to lift out the access plate with the fuel pump and gauge
    sending unit attached. (Haynes manual, under $20, has a photograph of
    the plate lifting out with the sending unit and pump attached, so
    perhaps you can determine whether you want to try this by first
    looking at the repair manual).
    If there's a Toyota dealer nearby, you might want to check the price
    of the sending unit. Don't know others experience, but have found
    often the price can be reduced just by asking respectfully, whether
    they can sell to you at a better price.


 

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