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  • Fuel Level Sending Unit Swap

    Well, i couldn't stand it anymore, the fuel gauge bouncing back and forth was driving me nutz, so i did something about it.
    There has been lots of discussion about the accuracy of these sending units as well as the fact that they fluctuate really bad unless your sitting still.
    I took my old tank and pulled the sending unit and swapped it with the one that came in my new tank and i took a pic of the 2 senders.
    The one picuted on the left is the Isspro sending unit that came out of my old tank and the one on the right came with the new tank. Notice the Isspro is about an inch longer and it reaches the bottom of my tank better. Also notice the black float on the other sender...it slides up and down on the shaft to read the level and when sloshing occures from turning and such, the float slides up or down rather freely and gives you an eratic reading.
    The Isspro on the other hand has the float inside the tube and a very small hole is drilled in the bottom allowing fuel in but not allowing it to drain rapidly when you make a turn, therefor the gauge needle will not move eratically like the other sender when making turns or accelerating, etc. So when you turn and all your fuel goes to the oposite side of the tank, the Isspro is still holding the fuel inside as it does not drain out fast at all. It takes probably a minute for the fuel to all drain out of the tube when its full. So slight sloshing in the tank will be almost completely unnoticed on the gauge inside.
    I know Jason is aware of this issue and probably already done something about it but for those who have this old sending unit, this might help clear up why it acts the way it does.
    Last edited by Clay; 10-19-2008, 03:09 PM.

  • #2
    Awesome Clay...thanks for the post and pic!

    So, the question is, where can I find one of those fuel level sending units on the left? LOL...

    I need something...mine drives me nuts as well.
    Greasin & Grinin
    Vegi oil powered since Aug 08
    2006 F-250 PSD - CC, Lariat, 4X4 - Vegistroke converted 1/27/13!!
    2008 F-250 PSD - CC, Lariat, 4X4 - Sold
    2005 F-250 PSD - CC, Lariat, 4X4 - Sold

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    • #3
      Originally posted by Marv View Post
      Awesome Clay...thanks for the post and pic!

      So, the question is, where can I find one of those fuel level sending units on the left? LOL...

      I need something...mine drives me nuts as well.
      Call Isspro and buy one i suppose. I should have taken the model number down and posted it.

      Jason probably knows which one it it since he used to carry them.

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      • #4
        I would like to change mine out too. Jason do you have the part number?
        2000 F250 7.3L
        Vegistroke installed July 12, 2008

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        • #5
          i have been running an ISSPro unit for a while myself. Way better unit.

          Measure your tank depth, take a inch orso off for reserve and order one from them.

          like 90.00
          2005 6.0l X
          V3 running 8/6/08
          40gal frame mounted tank

          Live by the grease, die by the grease

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          • #6
            Originally posted by Wilson View Post
            i have been running an ISSPro unit for a while myself. Way better unit.

            Measure your tank depth, take a inch orso off for reserve and order one from them.

            like 90.00
            with the way the pickup lines are desined, i don't thin kan inch would be any reserve. I should have measured my Isspro to see just how far to the bottom it would be but i did not.
            Also the holes did not match up - i would have thought they would but the diameter of the Isspro was just a tad bit bigger so i rotated the Ispro 1/8 turn to get completely away from the holes and drilled new ones using self drilling screws.

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            • #7
              Here they are...i think mine is 11" but measure your tank inside depth to be sure. IIRC my tank is 12" deep.
              http://www.isspro.com/products.php?cat=99

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              • #8
                Originally posted by CHenry View Post
                Here they are...i think mine is 11" but measure your tank inside depth to be sure. IIRC my tank is 12" deep.
                http://www.isspro.com/products.php?cat=99

                Awesome Clay, thanks! :cheers:
                Greasin & Grinin
                Vegi oil powered since Aug 08
                2006 F-250 PSD - CC, Lariat, 4X4 - Vegistroke converted 1/27/13!!
                2008 F-250 PSD - CC, Lariat, 4X4 - Sold
                2005 F-250 PSD - CC, Lariat, 4X4 - Sold

                Comment

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