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Thread: Td5 harmonic vibration

  1. 21st August 2007, 12:33 PM #1
    peaches
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    Td5 harmonic vibration

    I have a vibration that comes in at about 1700rpm and is totally unrelated to road speed. It seems like an exhaust vibration but the exhaust is free from the bodyworks and all appears to be Ok. Could it be a blocked muffler or something sillt like a restricted exhaust flow reverberation back through the vehicle ? Anybody experienced anything similar - any suggestions?

    Thanks
    Paul
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  2. 21st August 2007, 12:51 PM #2
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    your dreaming (dreaming its the exhaust cause that would be cheap to fix) right.......

    make sure it happens when the vehicle is stationary then you can start isolating things out when youve got your head in the bonnet. My money, without seeing and playing with it, lies in the clutch and flywheel.
    Dave

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  3. 21st August 2007, 12:52 PM #3
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    Scouse
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    The flex joint in the exhaust downpipe can sometimes cause this.

    Oh, and Peaches has an Auto.
    Scott
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  4. 21st August 2007, 12:58 PM #4
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    oh in that case under the same requirements of not seeing it and playing with it the flex plate and TC....

    (but only cause thats the most expensive bit).
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
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  5. 21st August 2007, 02:23 PM #5
    Robbo
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    Injector Harness Fault
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  6. 21st August 2007, 02:56 PM #6
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    nahh its more fun to blame something associated with an automatic
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    Tdi autoManual d1 (gave it to the Mupion)
    Archaeoptersix 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.
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  7. 4th July 2008, 11:44 AM #7
    peaches
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    Well guys thought it was about time i posted this up .It has taken me a while but have finally had a bit of success and Dave, i'm pleased to say it had nothing to do with the AUTO.
    After following various threads (all great stuff by the way) it was totally exhaust related. Seem at some stage it has had a non genuine engine pipe put on that has the flex joint under the vehicle in a horizontal rather than under the turbo in a vertical position. I don't know if this would have any bearing on the vibration in it's own right, but the fact that that the pipe was 40mm too long was compressing the flex joint creating a solid pipe effect. Shortened this and hey presto - bottom end vibration reduced solving some of the problem. Next up they fitted a mass damper (common on a lot of vehicle these days apparently) which has all but removed the harshness and has only left a very slight vibration from 2200-2250rpm which i am prepared to live with and would probably be cured altogether if i fitted a genuine exhaust but figured i had spent enough getting it to a stage that is liveable and won't drive me nuts.
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  8. 4th July 2008, 01:29 PM #8
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    glad ur problem is fixed. i have a rather annoying vibration in my td5 auto disco. did/does yours come through to the cabin so that you can feel it as well as hear it?
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  9. 4th July 2008, 05:38 PM #9
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    Mine had split mounting rubbers on the exhaust system causing a reverberation. Also check the TD5 engine mounts to see if they have collapsed.

    After replacing both mounts on mine and fixing the exhaust mounting I still cannot believe how smoooth it is. Even no more "clunk" in the auto changing gears coming out of roundabouts, just amazing.

    BradM
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  10. 4th July 2008, 07:19 PM #10
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    Quote Originally Posted by simonr23 View Post
    glad ur problem is fixed. i have a rather annoying vibration in my td5 auto disco. did/does yours come through to the cabin so that you can feel it as well as hear it?
    If i were you Simon, I'd be checking the Double carden and the engine/gearbox/transfer case mounts, especially the DC joint.

    Baz.
    Cheers Baz.

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