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Thread: A squishy thump when changing from accelerate to power off.

  1. #1
    Join Date
    Dec 2010
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    A squishy thump when changing from accelerate to power off.

    07 Polo 93n, just under 90 thou K on it. The noise is only audible going from fairly hard acceleration to power-off (or vice versa) fairly abruptly. Maybe a tenth or a twentieth of a second after the accelerator input, and seems to correspond to the engine/drivetrain reacting to the power change.

    Dogbone mount?

    I'll be getting a service (90 000) done soonish. Can it wait til then?
    Is there a superior after-market dogbone mount I should be looking to install at that time? (If that's what it is).

    Thanks, in advance.
    2007 VW Polo GTi, white, standard. First registered in Japan, imported to NZ 2010. Owned since Dec/10. Love at first drive.

  2. #2
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    Yeah mate, sounds like a busted dog bone mount. Also give the control arm bushes a look too. If you haven't changed them, they will be on their way out very soon.
    "If can't get behind your troops, feel free to stand in front of them..."

  3. #3
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    Thanks Blitzen. Is it likely this can wait a month or so? Any superior mounts than standard you'd recommend? Is it hard to get at?
    2007 VW Polo GTi, white, standard. First registered in Japan, imported to NZ 2010. Owned since Dec/10. Love at first drive.

  4. #4
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    Like this thread? http://www.vwwatercooled.org.au/foru...tle-63539.html

    I still haven't found the cause but 2 track days later and it hasn't gotten any worse
    Resident grumpy old fart
    VW - Metallic Paint, Radial Tyres, Laminated Windscreen, Electric Windows, VW Alloy Wheels, Variable Geometry Exhaust Driven Supercharger, Direct Unit Fuel Injection, Adiabatic Ignition, MacPherson Struts front, Torsion Beam rear, Coil Springs, Hydraulic Dampers, Front Anti-Roll Bar, Disc Brakes, Bosch ECU, ABS

  5. #5
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    Dec 2010
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    Yeah, a bit like that. I found and browsed that thread a bit when it happened.
    I think I'll let my mechanic make a diagnosis when it's time, but I'm suspecting the dogbone, or maybe other engine mounts. Hope it's not anything internal.
    It's not getting any worse. I don't thrash or race the car, and it otherwise seems ok.
    2007 VW Polo GTi, white, standard. First registered in Japan, imported to NZ 2010. Owned since Dec/10. Love at first drive.

  6. #6
    Join Date
    Jun 2011
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    Id agree with Blitzen, worn control arm bushes are pretty common, and look into the dog mount. The new genuine control arm bushes have changed in design over the years which have some more support in them similar to golf bushes to prevent premature wear.

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