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engine clunks when turned on for the first time of the day

Discussion in '2nd Gen. Tacomas (2005-2015)' started by KingMoo, Jun 28, 2011.

  1. Jun 28, 2011 at 7:38 AM
    #1
    KingMoo

    KingMoo [OP] Well-Known Member

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    -LIFT: 5100 bilsteins all around (set at 0.85 in front) eibach coils 2" AAL -D-RINGS -BED COVER rollaway
    my tacoma (2011 trd sport dc sb) only has about 3000 miles on it and it makes a strange sound when I start it up for the first time each day. the vehicle remains in park but after about 5 seconds of being turned on it makes a sound that I would liken to that of a bad transmission shift...

    has anyone noticed this kind of thing before?
     
  2. Jun 28, 2011 at 7:40 AM
    #2
    Xshark

    Xshark Well-Known Member

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    Icon progressive leaf, 3-leaf pack. Bilstein 5100's on all corners, front set at 2.5" Spidertrax wheel spacers Satoshi Grille Mod
    Air conditioner?
     
  3. Jun 28, 2011 at 7:43 AM
    #3
    transplant

    transplant resident know-nothing

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    no, but im right around the same mileage.. ill be sure to look out for it.

    i mean with 3k on the clock.. what could possibly be wrong??


    subbed for the outcome..
     
  4. Jun 28, 2011 at 7:47 AM
    #4
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

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    I'm assuming it does this at idle when you're not trying to put it gear? If so, I'd guess it's the automatic choke.
     
  5. Jun 28, 2011 at 9:25 AM
    #5
    KingMoo

    KingMoo [OP] Well-Known Member

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    yes it makes the sound after idleing for about 5 seconds. it doesn't sound healthy but I only hear it once per day...
     
  6. Jun 28, 2011 at 9:42 AM
    #6
    ToddG

    ToddG Active Member

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    I have a 2011 with 17000 miles i have noticed a slight knocking nosie in the morning on the intitail start up, nose last for a short time until the motor is warmed up.
     
  7. Jun 28, 2011 at 11:05 AM
    #7
    JKD

    JKD Well-Known Member

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    Automatic choke? There aren't any carburetors on this vehicle...
     
  8. Jun 28, 2011 at 11:06 AM
    #8
    JKD

    JKD Well-Known Member

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    My vote is on the A/C compressor as well. They can sound a little rough on the first startup after sitting for a while.
     
  9. Jun 28, 2011 at 11:12 AM
    #9
    BradleyScottETC

    BradleyScottETC Class IV Category 8 Elite VIP Member (Only)

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    Liquid refrigerant that has migrated to the evaporator because inside the dash is going to be cooler than behind the grille will slug the compressor on start-up. That is possible.
     
  10. Jun 28, 2011 at 11:17 AM
    #10
    Steves104x4

    Steves104x4 Well-Known Member

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    BUCKLE UP! It makes it harder for Aliens to pull you out of your Truck.
    Check the trans fluid level. Make sure electrical connections are secured on the trans.

    If you wear big boots, look under the steering column/dash above where your toe would hit any electrical connectors and make sure they are secure (I have heard of boots disconnecting the Trans interlock relay)

    Steve
     
  11. Jun 28, 2011 at 11:23 AM
    #11
    Pugga

    Pugga Pasti-Dip Free 1983 - 2015... It was a good run

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    :eek: guess I'm a little out-dated...
     
  12. Jun 29, 2011 at 11:04 PM
    #12
    transplant

    transplant resident know-nothing

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    yes, but fuel injected vehicles still do this. after your engine reaches normal operating temperature your rpms drop and the valve in the throttle body sits normal. until then there is an automatic choke... albeit totally computer controlled.
     
  13. Oct 18, 2011 at 6:21 AM
    #13
    T4C0MA

    T4C0MA Well-Known Member

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    Was there ever a resolution to this issue? I'm experiencing the same problem now.
     
  14. Oct 18, 2011 at 10:21 AM
    #14
    T4C0MA

    T4C0MA Well-Known Member

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    I run my A/C very frequently... I wonder if it could be caused by slightly low freon?
     
  15. Oct 18, 2011 at 12:09 PM
    #15
    MountainEarth

    MountainEarth Well-Known Member

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    Yeah mine does it too. I drive very little - about 5000 miles a year - and my truck often sits unused for days at a time. It is more pronounced when it's been a few days since driven.
     
  16. Oct 18, 2011 at 12:13 PM
    #16
    Fink

    Fink Motorboatin' SOB

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    Dealership would be my first stop, if it is still under warranty.

    Fink[​IMG]
     
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