1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Strange boing Noise when cornering or uneven ground

Discussion in 'Bodywork, Tyres, Wheels & Trim' started by Brian23, Oct 12, 2018 at 8:05 AM.

  1. Brian23

    Brian23 Senior Member

    Messages:
    1,160
    Likes Received:
    12
    Joined:
    Jan 11, 2008
    Location:
    Aylesbury
    Your Mercedes:
    230TE (Gone 1st merc), E240 (Gone), 2005 E200 Estate, 1999 230SLK (wife's).
    Hi I was driving my wife's 1999 230 SLK the other day and when you corner or go over uneven ground, there is a boing noise from behind could be in the boot/boot lid or outside. I've looked in the boot and at the rear springs, but nothing obvious. Any Ideas?
     
  2. LostKiwi

    LostKiwi Senior Member

    Messages:
    13,756
    Likes Received:
    5,184
    Joined:
    Aug 25, 2006
    Location:
    Midlands / Charente-Maritime
    Your Mercedes:
    '93 500SL-32, '01 W210 Estate E240, 02 R230 SL500 (Malcolm Spec), 04 Smart Roadster Coupe
    Nothing rolling around in the boot or under the boot floor?
    No broken springs (can be hard to see as they usually break on the bottom coil)?
     
  3. OP
    Brian23

    Brian23 Senior Member

    Messages:
    1,160
    Likes Received:
    12
    Joined:
    Jan 11, 2008
    Location:
    Aylesbury
    Your Mercedes:
    230TE (Gone 1st merc), E240 (Gone), 2005 E200 Estate, 1999 230SLK (wife's).
    No nothing in the boot anywhere and MoT today, so spring check. It has actually been doing this for a couple of years and been through a couple of MoT's. I only try and find it when I drive it. It is as if a tension bar, as in the old style boot lids is moving, but, non on this car. It is not like a clunk. It's a slightly prolonged sound.
     
  4. antijam

    antijam Senior Member

    Messages:
    1,593
    Likes Received:
    23
    Joined:
    Jul 20, 2008
    Location:
    Gloucestershire
    Your Mercedes:
    2003 SLK320
    Sounds very like a broken rear spring. As LostKiwi points out, they can be very difficult to see since the failure is almost always the bottom coil which, after a few years, ends up sitting in a poultice of salty mud and corrosion inevitably takes its toll.
     
  5. OP
    Brian23

    Brian23 Senior Member

    Messages:
    1,160
    Likes Received:
    12
    Joined:
    Jan 11, 2008
    Location:
    Aylesbury
    Your Mercedes:
    230TE (Gone 1st merc), E240 (Gone), 2005 E200 Estate, 1999 230SLK (wife's).
    Just this morning passed it's MoT and I cannot see anything wrong with the springs either when it is jacked up.

    19 Years old and only failed last year due to the headlights needing to be polished.
     
  6. M80

    M80 Senior Member

    Messages:
    3,051
    Likes Received:
    378
    Joined:
    Jan 21, 2006
    Location:
    Derbyshire
    Your Mercedes:
    Viano 3.0 ExLWB (09)
    I'm not familiar with your mo mo but had similar with Larisa'a Jeep,
    turned out to be the rear A fame centre bush. Difficult to access and above other parts it was diifcult to diagnose.
     
  7. OP
    Brian23

    Brian23 Senior Member

    Messages:
    1,160
    Likes Received:
    12
    Joined:
    Jan 11, 2008
    Location:
    Aylesbury
    Your Mercedes:
    230TE (Gone 1st merc), E240 (Gone), 2005 E200 Estate, 1999 230SLK (wife's).
    thank you
     
  8. antijam

    antijam Senior Member

    Messages:
    1,593
    Likes Received:
    23
    Joined:
    Jul 20, 2008
    Location:
    Gloucestershire
    Your Mercedes:
    2003 SLK320
    This is where my SLK spring failed, and I couldn't see the fracture until it was removed. My car too had passed an MoT with the 'boing' present - but obviously not audible during the test.

    P1040300.jpg
     
  9. Blobcat

    Blobcat Moderator

    Messages:
    8,660
    Likes Received:
    325
    Joined:
    Feb 8, 2006
    Location:
    Near Grange Moor (not Wakefield...)
    Your Mercedes:
    W213 E220d, Smart R451 CDI, Porsche 911 C2S, Land Rover 110 County SW
    My smart passed it's MOT also with both front springs broken - Drivers side (pic below) at the bottom and passenger side at the top. Not visible only a clicking when turning.

    Smart.jpg
     
  10. OP
    Brian23

    Brian23 Senior Member

    Messages:
    1,160
    Likes Received:
    12
    Joined:
    Jan 11, 2008
    Location:
    Aylesbury
    Your Mercedes:
    230TE (Gone 1st merc), E240 (Gone), 2005 E200 Estate, 1999 230SLK (wife's).
    I'll take another look tomorrow.
     
  11. Uncle Benz

    Uncle Benz Senior Member

    Messages:
    2,181
    Likes Received:
    303
    Joined:
    Mar 31, 2006
    Location:
    West Sussex
    Your Mercedes:
    Mainly Mercedes
    If you look at the wishbone where the spring sits down into the recess you can sometimes see a rusty or shiny mark where the spring has been rubbing on the wishbone. A break at the lower end, or sometimes just excessive rusting of the lower part of the spring means it won't sit central in the wishbone hole, and boings on the side of the wishbone hole when the suspension goes up and down.
     
    Blobcat likes this.

Share This Page