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Transmission/Transfer case clunking normal?

Discussion in 'Technical Chat' started by Cygan, Aug 24, 2009.

  1. Aug 24, 2009 at 1:06 PM
    #1
    Cygan

    Cygan [OP] Active Member

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    Hello all. I just picked up a 2.7 4x4 Access cab. The thing has 700 miles on the clock. Ever since about 300 miles I noticed this clunk. When lurching forward, or reverse for that matter, then engaging the clutch there is a metal to metal clunk. I also hear it when in 4th or 5th doing about 50-60, letting off the gas and then getting back on it tho its not as pronounced. The sound seems to come either from the transfer case or the transmission.

    I went to the dealership this morning to have it checked out. The mechanic told me that it was normal for this truck. Can anyone out there confirm that this is in-fact "normal" for this truck?
     
  2. Aug 25, 2009 at 8:55 AM
    #2
    Cygan

    Cygan [OP] Active Member

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    Anyone? All I need is a yes or no. Please help
     
  3. Aug 25, 2009 at 9:32 AM
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    fireturk41

    fireturk41 I like to break shit!

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  4. Aug 25, 2009 at 10:02 AM
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    Janster

    Janster Old & Forgetful

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    Are you in 4WD when this is occuring?
     
  5. Aug 25, 2009 at 10:23 AM
    #5
    Cygan

    Cygan [OP] Active Member

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    It happens in 4WD as well as 2WD
     
  6. Aug 25, 2009 at 10:35 AM
    #6
    rutherk1

    rutherk1 ElPhantasmo&TheChickenRunBlastarama

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    Manual transmission 4x4s I have had in the past did that upon sudden pressing of the gas (when coasting) or sudden deceleration of gas (when under throttle). Usually some slack somewhere in the drivetrain could be the transfer case chain, ring and pinion, or somewhere else. I wouldn't worry about it. Its usually more noticeable in manual gearboxes since they is no slippage when the clutch is engaged. Most often just normal mechanical noises.

    Good luck. Hope this helps.

    EDIT: You probably noticed it after 700 miles when you started to get more comfortable with the truck. Thats when I usually notice noises.
     
  7. Aug 25, 2009 at 12:28 PM
    #7
    Cygan

    Cygan [OP] Active Member

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    It definitely puts me somewhat at ease. I've had a jeep guy tell me that his Jeep does the same thing. But I also had a guy who has a 88 toyota 4x4 with over 300k miles tell me that his tin can does not clunk. I'm not sure what to believe here.

    I actually noticed the clunk at around 260 miles which is about 100 miles after I picked her up. At 700 miles its annoying the shit out of me :(
     
  8. Aug 25, 2009 at 12:32 PM
    #8
    rutherk1

    rutherk1 ElPhantasmo&TheChickenRunBlastarama

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    I wouldn't worry about it.

    His 88 didn't do that because the transfer-case was all gears. Yours and mine have a huge chain in it. There is some slack so it wont snap. Im willing to bet, that is what you are feeling. Its just exaggerated because you have a manual transmission.
     
  9. Aug 25, 2009 at 12:46 PM
    #9
    TacoOwner?

    TacoOwner? Well-Known Member

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    Great info. +1
     
  10. Aug 26, 2009 at 7:06 PM
    #10
    Cygan

    Cygan [OP] Active Member

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    Thanks for the replies, especially rutherk1. I do feel a little better. I'm not as worried but still annoyed :)
     
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