Fuel gauge reads empty

Discussion in 'Technical' started by David74maverick, Jun 19, 2014.

  1. David74maverick

    David74maverick Member

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    Is there a way to test if it's the fuel level sensor or the float without removing it? I just want to know if I should order a new fuel level sensor or not before I remove it... Thank you.
     
  2. rthomas771

    rthomas771 Member

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    You said that it works but not accurate. Could be the instrument voltage regulator (IVR) not doing its job
     
  3. David74maverick

    David74maverick Member

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    I was wrong about it reading/reading wrong... I think either the sending unit or the float was going through it's final death throws... since that comment it hasn't moved except when I grounded the wires at the tank...
     
  4. David74maverick

    David74maverick Member

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    I was wrong about it reading/reading wrong... I think either the sending unit or the float was going through it's final death throws... since that comment it hasn't moved except when I grounded the wires at the tank... like I said I ohmed the sending unit and got a reading of 86 which is higher than the range I read about so I don't know if that means it's the sending unit is bad or simply the float/level arm is resting on the very bottom...
     
  5. David74maverick

    David74maverick Member

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    I'm going to be removing my fuel gauge sending unit in the next few days than it hit me... what if the o-ring is bad or gets damaged in the removal. Is there any local type shops that may have a usable replacement? if not is there a RTV silicone that could be used to make it work? I'd appreciate some input. Thank you.
     
  6. rthomas771

    rthomas771 Member

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    Melvin's has the O-ring...and every Mustang supply vendor in the phone book. Part number C0AF 9276-A





     
  7. Crazy Larry

    Crazy Larry Member

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    Replace the O-ring whether you think it's bad or not. It's gotta be 4- years-old.

    And no, RTV will NOT seal it. It will leak like a son of-a-gun. RTV is not made for use with gasoline anyway.
     
  8. David74maverick

    David74maverick Member

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    while doing some searches I found that if I removed the space and dash the number relates to a '95 or so mustang which is available locally but I can't find dimensional info on either to be sure. does anyone know anything about this?

    I've never heard of Melvin's... have you ever ordered from them? if I wanted to replace the strainer what size should I get? '74 250ci 2dr.
     
  9. Crazy Larry

    Crazy Larry Member

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    What "strainer"??
    I've ordered from Melvins and they are very good.
     
  10. David74maverick

    David74maverick Member

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    They offer both 3/8" & 5/16"
     

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