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Fuel Pump noise after being off for 7hrs??

Discussion in '2nd Gen. Tacomas (2005-2015)' started by MAXTacoma, Oct 27, 2010.

  1. Oct 27, 2010 at 5:00 AM
    #1
    MAXTacoma

    MAXTacoma [OP] Well-Known Member

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    So last night at about 12 I went to get something our of my truck in the garage. While I was in there I could hear a noise. It sounded like the fuel pump right before I turn the truck on. I stuck my head under the back of the truck and sure enought it was coming from around the gas tank. I had not driven the truck since 5pm that night when I came home from work. I'm not sure if it was on the whole time or not. Is this normal that the fuel pump can just turn on 7 hours after I drove it last?
     
  2. Oct 27, 2010 at 5:50 AM
    #2
    PSJ

    PSJ Prerunners Work

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    In the manual (pg. 130/2009 manual) it states after approximately 5 hrs after the engine is turned off, you may hear sound coming from under the vehicle for several minutes. It states this sound "is the sound of a fuel evaporation leakage check and, it does not indicate a malfunction".

    This sounds like what you are experiencing. Hope this helps...:)
     
  3. Oct 27, 2010 at 5:51 AM
    #3
    KPT

    KPT sees what you did there.

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    I've heard of this before, and the consensus was that the truck was venting some gasses of some sort.
    It also apparently cycles the power for a second, because some who did the fog light mod had their lights come on 5 hours after they shut the truck off..:laugh:
     
  4. Oct 27, 2010 at 5:55 AM
    #4
    MAXTacoma

    MAXTacoma [OP] Well-Known Member

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    Awsome, I'm glad that it isn't anything I need to worry about. I just thought that it was weird that after 7 hours it was on.
     
  5. Oct 27, 2010 at 6:02 AM
    #5
    AndrewFalk

    AndrewFalk Science!

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    :)
    WTF!?!?! Hahahahahaha...:p
     
  6. Oct 27, 2010 at 6:05 AM
    #6
    KPT

    KPT sees what you did there.

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    Yeah one guy had his truck parked facing his neighbor's house and in the middle of the night they started shining into the guy's bedroom. :laugh:
     
  7. Oct 27, 2010 at 6:09 AM
    #7
    AndrewFalk

    AndrewFalk Science!

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    :)
    Hahaha...they probably thought he was an asshole.
     
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