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Fuel pump continues to run after engine shutoff 2018 Tundra. It was running after 8 hrs

Discussion in 'General Tundra Discussion' started by C Mattox, Jun 29, 2019.

  1. Jun 29, 2019 at 3:53 PM
    #1
    C Mattox

    C Mattox [OP] New Member

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    My 2018 Tundra was shutoff more than 8 hrs when I heard the fuel pump still running. I started the engine and turned it off and the fuel pump stopped. ???
     
  2. Jun 29, 2019 at 4:36 PM
    #2
    Blueknights75

    Blueknights75 040 IS THE FASTEST

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    Ron
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    Take it back to the dealer...
     
  3. Jun 29, 2019 at 4:43 PM
    #3
    DCB500

    DCB500 New Member

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    I heard the same thing right after I bought my 19’....went out in the garage late one night and heard a noise and definitely was coming from the truck and sound like a fuel pump. Asked the dealer and they said sometimes the computer will run “checks” on things periodically and I have heard it a couple times since then....nothing appears to be affecting with normal operation. It doesn’t stay on but will come on after the truck had been sitting.
     
  4. Jun 29, 2019 at 5:13 PM
    #4
    endagon

    endagon New Member

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    8 hours is about when it runs the pressure test for emissions iirc
     
    Watt maker likes this.
  5. Jun 29, 2019 at 5:45 PM
    #5
    markg

    markg New Member

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  6. Jun 29, 2019 at 7:31 PM
    #6
    koditten

    koditten New Member

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    It's the charcoal canister vacuum pump. It's normal for it to come on add very odd times.
     
  7. Sep 15, 2020 at 2:16 PM
    #7
    djhase

    djhase New Member

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    This happen last night to our 19 Tundra. Went out to the garage and heard some buzzing noise. It was coming from back end of the Tundra. The truck had been parked for several hours. I started it and shut it off and it stopped. Have not asked the dealer about it but will tomorrow. Its getting the trailer brake controller update so it stops crying about the trailer not being connected. At least I hope.
     
  8. Sep 15, 2020 at 2:37 PM
    #8
    timsp8

    timsp8 Member

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    Still running, as in 8 hours straight or you just noticed it making a sound 8 hours later? It will come on at random times for emissions bs.
     
    Cpl_Punishment likes this.
  9. Sep 16, 2020 at 2:31 PM
    #9
    djhase

    djhase New Member

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    No I don't think it was running for 8 hours. I asked the service tech about it today. Turns out its some kind of emissions thing Toyota vehicles do. Supposedly it only runs for a few minutes. I just happened to go out in the garage when it was running.
     
  10. Sep 16, 2020 at 5:20 PM
    #10
    timsp8

    timsp8 Member

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    Mine does that. But the op made it sound like his ran 8 hours straight.
     

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