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Disabling fuel system leak detection pump

Discussion in '3rd Gen. Tacomas (2016+)' started by Jerrfylube, Feb 27, 2018.

  1. Feb 27, 2018 at 10:49 AM
    #1
    Jerrfylube

    Jerrfylube [OP] Well-Known Member

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    Anyone who has slept in their truck has probably heard it—that mechanical compressor-like humming noise coming from the fuel tank area. I’ve read that it has to do with emissions and that it is leak checking the fuel system.

    Great. But frankly, I’m tired of having to listen to it kicking in and off in the middle of the night while trying to sleep in my roof top tent.

    Is there any way to temporarily disable it while camped?
     
  2. Feb 27, 2018 at 10:53 AM
    #2
    hiPSI

    hiPSI Laminar Flow

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    Disconnect the battery.
     
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  3. Feb 27, 2018 at 10:56 AM
    #3
    Jerrfylube

    Jerrfylube [OP] Well-Known Member

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    Obviously, but I’m looking for something that will allow me to not have to remove power from the entire truck.
     
  4. Feb 27, 2018 at 11:10 AM
    #4
    daddy_o

    daddy_o Well-Known Member

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    I would probably just live with it.
    If you were able to somehow disconnect it and it wasn't allowed to do its thing, there could be codes thrown. It is emissions related and if not allowed to properly test then it could have ill effects on engine runability.
    I don't know this for sure, but it would be something to think about.
     
    Last edited: Feb 27, 2018
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  5. Feb 27, 2018 at 11:11 AM
    #5
    Iamraiderpower

    Iamraiderpower Well-Known Member

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    You must have some really sensitive hearing. When my wife’s 16 T4R does it I can’t really even hear it
     
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  6. Feb 27, 2018 at 3:06 PM
    #6
    Jerrfylube

    Jerrfylube [OP] Well-Known Member

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    We camp in some extremely remote, VERY quiet locations... it resonates quite loudly through the bed, rails and base of the tent. It's FAR from quiet.
     
  7. Feb 27, 2018 at 9:02 PM
    #7
    OregontoBajaCA

    OregontoBajaCA Well-Known Member

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    I searched the pump online and found the part listed for the latest Tacomas.

    Depending on the location of the air pump and accessibility, you could try sticking some Dynamat or Boom Mat sound deadener on it and then either wrap it or enclose it in some polyethylene or neoprene closed cell foam.

    That might take the sound down just a few dB.
     
    shakerhood likes this.
  8. Feb 27, 2018 at 9:09 PM
    #8
    Dacon

    Dacon 2017 Tacoma TRD PRO Quikrete

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    *** Camp at Walmart. Parking lot.
     
  9. Feb 27, 2018 at 9:33 PM
    #9
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

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  10. Feb 27, 2018 at 11:56 PM
    #10
    Hiluxski

    Hiluxski Well-Known Member

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    I agree , it is annoying. The one solution I have found is to start the motor briefly maybe even get some heat and it’ll delay the pump checking. I never did figure out the exact timing of it but I’ve got to go pretty good were we could sleep most of the night pump free.
     
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  11. Mar 1, 2018 at 7:21 AM
    #11
    shakerhood

    shakerhood Well-Known Member

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    I think it comes on about 5 hours after you shut it off, running the truck would definitely delay it again.
     
  12. Mar 1, 2018 at 7:31 AM
    #12
    The hammer

    The hammer It's not a truck, It's a lifestyle!

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    Just get some rubber insulating spray and spray it on the bed above the fuel cell. Then get a thick insulating blanket and throw it around fuel cell before going to sleep. And to crawl under, grab a big piece of cardboard to keep underneath the bed mat, assuming you have one, if not get one, it'll help too!

    Edit: Ear plugs might help too.

    Hope that helps
    Cheers!

    [​IMG]
     
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