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Author Topic: Clonking from rear  (Read 2774 times)

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ians

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Clonking from rear
« on: 06 November 2007, 11:43:50 »
When going round a right hand bend (only) - eg roundabout -  I have started to get a distinct knock-knock-knocking noise from the rear end.  Pretty sure its coming from the near side so presumably when something is loaded due to the cornering.

I've had a superficial look in less than ideal conditions and can't see anything amiss - broken spring etc.
Tried rocking/bouncing the car and the rear wheel although not had a chance to jack it up yet - again nothing obvious.

Suggestions?

Cheers,
Ian
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Marks DTM Calib

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Re: Clonking from rear
« Reply #1 on: 06 November 2007, 11:59:22 »
Is it the rear or does it sound like the back of the tunnel (just behind the seats).
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ians

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Re: Clonking from rear
« Reply #2 on: 06 November 2007, 12:03:49 »
Hmm difficult to say offhand but I'm pretty sure its coming from the nearside.
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Marks DTM Calib

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Re: Clonking from rear
« Reply #3 on: 06 November 2007, 12:05:44 »
Do a simple test for me......open the boot and press the boot floor having pulled the carpet back about 6 inches in from the rear panel and 4 inches across from the spare wheel.
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ians

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Re: Clonking from rear
« Reply #4 on: 06 November 2007, 12:12:30 »
OK - will do when I go out at lunchtime.

But this is an estate - make any difference?

What am I looking for?
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Marks DTM Calib

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Re: Clonking from rear
« Reply #5 on: 06 November 2007, 12:13:44 »
Same applies.....its related to exhaust mount/heatshield.
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bob.dent

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Re: Clonking from rear
« Reply #6 on: 06 November 2007, 14:00:08 »
This is interesting, I'm getting a similar thing with mine but it only happens when going round left hand corners. :-?
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ians

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Re: Clonking from rear
« Reply #7 on: 06 November 2007, 14:13:27 »
Mark - I tried 'pressing' the boot floor but didn't notice anything.   The exhaust mount feels about the same as normal - certainly needs a fair bit of force to get it to contact the body,  although the noise does sound like that - a bit too regular I would have thought though.


Bob - if all else fails we can make a combo - then it will do it in both directions ;)
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Marks DTM Calib

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Re: Clonking from rear
« Reply #8 on: 06 November 2007, 14:32:54 »
Quote
Mark - I tried 'pressing' the boot floor but didn't notice anything.   The exhaust mount feels about the same as normal - certainly needs a fair bit of force to get it to contact the body,  although the noise does sound like that - a bit too regular I would have thought though.


Bob - if all else fails we can make a combo - then it will do it in both directions ;)


Ok, as a final check, look under the back near the rear can at the heat shield above the exhaust back box....give it a wiggle....
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ians

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Re: Clonking from rear
« Reply #9 on: 06 November 2007, 14:36:14 »
I did have a bit of a poke in there when I was waggling the exhaust and nothing obvious.

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bob.dent

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Re: Clonking from rear
« Reply #10 on: 06 November 2007, 14:38:44 »
Quote
Mark - I tried 'pressing' the boot floor but didn't notice anything.   The exhaust mount feels about the same as normal - certainly needs a fair bit of force to get it to contact the body,  although the noise does sound like that - a bit too regular I would have thought though.


Bob - if all else fails we can make a combo - then it will do it in both directions ;)

 ;D ;D ;D

Mark - tried the test but nothing apparent. I did mention it to my garage when it was in for service a couple of weeks ago and they thoroughly checked under the car a couldn't find anything obvious as to the cause.
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Marks DTM Calib

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Re: Clonking from rear
« Reply #11 on: 06 November 2007, 14:41:31 »
Quote
I did have a bit of a poke in there when I was waggling the exhaust and nothing obvious.



Ok, next quick test which is a little harder to do is to reach under the car and grab the prop shaft near the centre bearing and give it a wiggle......repeat on the front and rear prop section.
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bob.dent

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Re: Clonking from rear
« Reply #12 on: 06 November 2007, 14:46:25 »
Quote
Quote
Mark - I tried 'pressing' the boot floor but didn't notice anything.   The exhaust mount feels about the same as normal - certainly needs a fair bit of force to get it to contact the body,  although the noise does sound like that - a bit too regular I would have thought though.


Bob - if all else fails we can make a combo - then it will do it in both directions ;)


Ok, as a final check, look under the back near the rear can at the heat shield above the exhaust back box....give it a wiggle....

Just tried that, but nothing - no movement at all. Looks like it's going to be one of life's little mysteries. :-/
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raximax

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Re: Clonking from rear
« Reply #13 on: 06 November 2007, 14:52:01 »
check your jack and cd compartment for loose items you never know :-/ :-/ :-/
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bob.dent

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Re: Clonking from rear
« Reply #14 on: 06 November 2007, 15:00:01 »
Quote
check your jack and cd compartment for loose items you never know :-/ :-/ :-/

Hmmmm.....this did cross my mind. I've got a few bits in the spare wheel compartment that I'm gonna try moving to see if it makes any difference.
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