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Tried searching - no luck - is it called a fuel tank pressure sensor?

Discussion in 'Stock 1995 - 2001 Explorers' started by Curtis, March 2, 2010.

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    1. Curtis

      Curtis Well-Known Member

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      My dad is having the tank replaced in his 96 and a new fuel pump assembly.

      The mechanic called, says he needs a small electronic switch thats on top of the tank as its so rusty it will not come off without destroying it.
      mechanic said it was $140
      Is it just to turn the CEL on when the fuel cap is left off?
      what is this called? what does it do? Can you live without it?

      Also the mechanic says that he cannot get the filler tube off the tank. agan becauce of rust. Is it possible to just cut the rubber hose and clamp it on to the new tank? Does the special fitting holding it (and the vent tube) on have a purpose?

      Thanks guys!
       
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    3. IZwack

      IZwack Moderator Emeritus

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      Could be this sensor - see Turdle's response at the bottom:

       
    4. Curtis

      Curtis Well-Known Member

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      Thanks IZwack!
      Must be a dealer only item, as Rockauto, autozone or advance do not show it. :mad:

      I wonder if you can run without it...
      May check for a junk yard piece too.

      Im assuming the other connections are...

      - on the pump - supply and return line
      - the Fuel tank pressure sensor
      - and some type of vent?
       
    5. wow97

      wow97 Guest

      what does fuel pressure sensor do
       
    6. wow97

      wow97 Guest

      Fuel tank pressure sensor what does do
       
    7. n2epv

      n2epv Active Member

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      It sounds like the fuel tank pressure sensor is used to check for air leaks in the tank or gas cap seal. The details are in http://www.motorcraftservice.com/vdirs/diagnostics/pdf/obdsm973.pdf page 13 "evap system monitor". The PCM checks for air leaks by drawing a slight vacuum in the tank and using this pressure sensor to measure that the vacuum is maintained.

      From personal experience, it will run just fine with a fuel evaporation system problem (plugged charcoal canister or leaky gas cap seal), but the CEL will stay on.
       
    8. wow97

      wow97 Guest

      that way my check engine wont stay off because fuel pressure senor i have check engine light that stay on for p174 bank 1 running too lean i check upper fuel rail gasket and o-rings on the pantium gasket and full tune up with new coil pack and three new oxygen sensor
       
    9. wow97

      wow97 Guest

      :usa::salute:that way my check engine wont stay off because fuel pressure senor i have check engine light that stay on for p174 bank 1 running too lean i change upper fuel rail gasket and o-rings on the pantium gasket and full tune up with new coil pack and three new oxygen sensor:mad::usa:
       
    10. wow97

      wow97 Guest

       
    11. gijoecam

      gijoecam Village Idiot Elite Explorer

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      If I had a nickel for every one of those I installed in the two and a half years I worked production building fuel tanks.....

      We called it the 'OBD-II sensor' on the line, but yes, that's what it is... just a little pressure sensor that connects to the evaporative emissions system.
       
    12. Curtis

      Curtis Well-Known Member

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      Ended up getting a new one, $150 from the local Ford dealer, needed it in a hurry and didnt have time to hunt down a used one after the better used parts places didnt have one....$150 is 10% the value of the truck!
       
    13. geracarreon

      geracarreon New Member

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      what is that sensor/vaccum (the green fitting) to the left of the fuel pressure sensor on the picture. mine is broken and i need to know the name and function to find a new one.
       

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