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Super Stumped with this Thumping/Knocking Noise

Discussion in '1st Gen. Tacomas (1995-2004)' started by Scobee1kenobi, Sep 17, 2012.

  1. Sep 17, 2012 at 8:03 PM
    #1
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    I'm really in need of some help here fellas, my cousin has a 2002 Double Cab Pre Runner 2wd auto. Has around 147k and is super clean, runs great etc..

    After the truck warms up it starts to make a thumping or rubbing/ knocking noise that you can hear prominently from the inside of the cab and does it when the truck is in gear. When its in neutral it mostly goes away. He runs 93 oct. It still runs great and has power, it is not a rod knock.

    Things that have been done in the past month or 2 trying to solve this:

    - timing belt
    - hydraulic tensioner
    - all other belts
    - water pump
    - all the pulleys (idler/tensioner)
    - thermostat and gasket
    - cam and crank seals
    - fresh oil change
    - fresh Denso plugs
    - SeaFoam in tank and induction

    This is a mechanic owned truck and we're pretty much stumped. Any and ALL help would be much appreciated. - Drew
     
  2. Sep 17, 2012 at 8:06 PM
    #2
    BAMFTACO

    BAMFTACO Pabst Blue Ribbon on ice

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  3. Sep 17, 2012 at 8:09 PM
    #3
    4WD

    4WD cRaZy oLdmAn

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    Help us ... help you bro'... Ya gotta get some audio posted with the mystery noise before anything can be assertained...
     
  4. Sep 17, 2012 at 8:11 PM
    #4
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    True that.. Ill have to wait till tomorrow to do that but i could upload a youtube link for sure
     
  5. Sep 18, 2012 at 5:14 AM
    #5
    ak47dennis

    ak47dennis Well-Known Member

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    First thing I would do is remove all the belts from the alt, power steering etc and try to isolate it.
     
  6. Sep 18, 2012 at 6:51 AM
    #6
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    I already did that
     
  7. Sep 18, 2012 at 5:10 PM
    #7
    hossmaster

    hossmaster Well-Known Member

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    Was a PreRunner, now it isn't
    is it mainly when the truck is warmed up and you come to a quick stop?
     
  8. Sep 18, 2012 at 6:00 PM
    #8
    ak47dennis

    ak47dennis Well-Known Member

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    So it doesn't do it sitting still only when the drive line is rotating.
     
  9. Sep 18, 2012 at 6:13 PM
    #9
    crazybill

    crazybill Member

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    Loose or broken motor or transmission mount?
    -Bill-
     
  10. Sep 18, 2012 at 6:17 PM
    #10
    Fenwick1993

    Fenwick1993 Hillbilly

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    Full rebuild short of machine work, mean green motherfucker! Lime green block, hand-polished valve cover, and stickers! Too broke for real mods right now. Stonewall is my baby, but he's also a work truck.
    This.
     
  11. Sep 18, 2012 at 6:52 PM
    #11
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    It does it sitting still, as you accelerate it goes away.. I was going to upload a video but you can't hear it thru my iphone speaker.
     
  12. Sep 18, 2012 at 6:53 PM
    #12
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    I was thinking maybe oil pump or something with the torque converter
     
  13. Sep 18, 2012 at 6:55 PM
    #13
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    I'm going to check into this also, it may have been overlooked
     
  14. Sep 18, 2012 at 6:55 PM
    #14
    Supra TT

    Supra TT Solid Axle FTMFW!!

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    SAS.. Need I say more.
    When I had a torque converter problem it really didn't make sounds. It just acted like a first timer trying to drive a manual tranny... really really bad driving.
     
  15. Sep 19, 2012 at 2:20 PM
    #15
    Scobee1kenobi

    Scobee1kenobi [OP] Member

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    I am not the only one with this problem. I have found very similar stories on this forum and on other sites but no one has an answer. Hopefully I can figure this out soon and will start a thread explaining the issue and how I fixed it
     
  16. Sep 25, 2012 at 1:10 AM
    #16
    tsab916

    tsab916 Well-Known Member

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    I have the same problem, it only makes the noise when the engine is under a load (drive or reverse) the car does not have to be moving

    -tomorrow morning im going to place all accesory belts (needs replacing anyways) i read on other toyota forums that if the belts are too tight it can make the ticking/thunping noise also

    -another guy on another toyota forum had the same problem and it ended up being a severly cracked flex plate, so im going to check that also

    I hope this solves mines and your problem, i'll keep u guys updated on what i find out.

    -
     
  17. Aug 28, 2013 at 12:18 PM
    #17
    mc3404

    mc3404 Well-Known Member

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    Any resolution to this problem? Mine has the same exact problem.
     
  18. Aug 29, 2013 at 11:29 AM
    #18
    tsab916

    tsab916 Well-Known Member

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    I have checked everything i can and done everything i can except rebuild the motor...the noise is still there, but does not effect the motor in anyway.

    I did notice that the sound went away or got very low in the winter time..

    Another thing i notice:

    I almost think this sound might be normal? My co-worker has a 02 tundura v8 and he has the same exact sound coming from his motor also.
    And then about a month ago i was in lake tahoe, ca. I forget what the place is called but you see the lake from there, anyways there was a lot of cars there and as i was standing there i heard the noise..so i turned around and it was the same exact noise but it was coming from a 2008-9? Nissan armada!!

    So i dont know..i think i myself will just accept it to be normal...i spent alot of money on it trying to figure it out and i have come to the conclusion that if it is a problem its an internal problem and i dont want to deal with that, BUT i dont think there is a problem.

    If you look at my last post (2 posts up) which was almost a year ago...the truck still runs like a champ with the noise..
     
  19. Sep 8, 2013 at 12:51 PM
    #19
    mc3404

    mc3404 Well-Known Member

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    To the Op, did this start after you replaced all the timing belt components?
     
  20. Sep 10, 2013 at 4:27 PM
    #20
    mc3404

    mc3404 Well-Known Member

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    What parts has everyone used? Aftermarket or OEM
     
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