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Author Subject: knocking from rear
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #1
just got 1998 306 122k miles i have a loud knocking noise when going over bumps,its just past a mot last week any suggestions where to startWink Wink
Posted 16th Feb 2009 at 16:38
jonnyvandijk

Seasoned Pro

Location: Bungay

Registered: 14 Mar 2005

Posts: 2,544

Status: Offline

Post #2
Rear axle bushes by the sound of it. There are four in total, and just cost me

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Posted 16th Feb 2009 at 16:41
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #3
could rear axle bushes cause knocking while driving/how could i check
Posted 16th Feb 2009 at 20:13
notch000

Senior User

Location: eating spuds

Registered: 18 Oct 2007

Posts: 549

Status: Offline

Post #4
spare tire craddle loose ?
Posted 16th Feb 2009 at 20:21
jonnyvandijk

Seasoned Pro

Location: Bungay

Registered: 14 Mar 2005

Posts: 2,544

Status: Offline

Post #5
burnvaler wrote:
could rear axle bushes cause knocking while driving/how could i check


Get under the car and have a look, or failing that get a mechanic to have a look. Usually the rubber comes unstuck from the metal part of the bush, and bangs on the bolt which attaches the whole lot together.

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Posted 16th Feb 2009 at 20:43
aaron6

Seasoned Pro

Location: On the sofa in maidstone

Registered: 16 May 2006

Posts: 5,840

Status: Offline

Post #6
Sounds like the beam mounts indeed.Change them for the solid baker ones from miles on here.

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Posted 16th Feb 2009 at 21:17
jon kirby

Seasoned Pro

Location: pothole central

Registered: 14 Jan 2004

Posts: 7,008

Status: Offline

Post #7
quote:
and just cost me
Posted 16th Feb 2009 at 21:31
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #8
supported car on axle stands and used trolley jack under shock bottom mount and when i lifted jack found front rubber bush moved up approx 5mm should ther be any movement,does this mean it needs changing rea rubber mount han no movement.should i change all 4 or just the problem one
Posted 16th Feb 2009 at 23:14
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #9
back end very loose under cornering i take it this is a definite worn rear bushes i will change all
Posted 17th Feb 2009 at 14:43
cress87

Seasoned Pro

Location: Norwich

Registered: 30 Mar 2007

Posts: 11,360

Status: Offline

Post #10
Could be a rear shock clunking too...

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Posted 17th Feb 2009 at 14:46
bennn

Seasoned Pro

Location: Shrewsbury

Registered: 05 Sep 2008

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Post #11
I had this same noise and it turned out to be the rear beam mountings. Cost me

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Posted 17th Feb 2009 at 18:49
jonnyvandijk

Seasoned Pro

Location: Bungay

Registered: 14 Mar 2005

Posts: 2,544

Status: Offline

Post #12
bennn wrote:
Cost me

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Posted 17th Feb 2009 at 19:11
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #13
ordered full setof rear bushes will change all at weekend
Posted 17th Feb 2009 at 20:19
jonnyvandijk

Seasoned Pro

Location: Bungay

Registered: 14 Mar 2005

Posts: 2,544

Status: Offline

Post #14
Lets hope its definately the bushes then.

What car have you actually got? Your profile says other.

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Posted 17th Feb 2009 at 20:42
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #15
r reg 1.9td goes well
Posted 18th Feb 2009 at 00:28
rich-6

Seasoned Pro

Location: Bottoming out!

Registered: 06 May 2007

Posts: 5,306

Status: Offline

Post #16
burnvaler wrote:
r reg 1.9td goes well


Can't have had anything quick then Whistle

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Posted 18th Feb 2009 at 00:38
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #17
not really but its quick enough for me
Posted 18th Feb 2009 at 11:44
burnvaler

Newbie

Location: edinburgh

Registered: 16 Feb 2009

Posts: 9

Status: Offline

Post #18
just changed all 4 rear mount simple enough job,used guide on this forum thanks .they didnt look that bad so i thought i wasted money but the knocking noise is gone now good result
Posted 21st Feb 2009 at 22:41
blondie

Dirty Diesel Pro

Location: WestMids

Registered: 13 Feb 2004

Posts: 3,867

Status: Offline

Post #19
Do you have to disconnect the rear brakes to do this? (pipes or handbrake)

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Posted 22nd Feb 2009 at 15:01
gtisid

Seasoned Pro

Location: chelmsford

Registered: 22 Mar 2003

Posts: 4,992

Status: Offline

Post #20
if it is your bushes i have a virtually brand new set that i removed from my car 3 -4 months back . genuine O/E front mounts and oldish looking rears but still intact you can have them all for 65 inc postage
click here

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Posted 22nd Feb 2009 at 19:22
willygti

Seasoned Pro

Location: Exeter

Registered: 08 Oct 2007

Posts: 5,024

Status: Offline

Post #21
blondie wrote:
Do you have to disconnect the rear brakes to do this? (pipes or handbrake)


No.

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Posted 22nd Feb 2009 at 19:23
paul_gti6_uk

Seasoned Pro

Location: Southampton

Registered: 21 Dec 2005

Posts: 1,380

Status: Offline

Post #22
Sounds like this is my problem then. I have a knock coming from the rear mostly under sudden cornering loads or when the suspension tops out.

What is odd is my rear mounts are only 15,000miles old and they are genuine pug ones. I have done one track day on them but I wouldn't think that would have destroyed them that quickly would it?

At 95,000miles old I am getting worried the clunk noises might be because the bearings inside the beam need changing.

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Posted 8th Jan 2010 at 15:47
daveyboy

aka Jim Davey

Location: Southampton

Registered: 01 Oct 2007

Posts: 8,648

Status: Offline

Post #23
paul_gti6_uk wrote:
Sounds like this is my problem then. I have a knock coming from the rear mostly under sudden cornering loads or when the suspension tops out.

What is odd is my rear mounts are only 15,000miles old and they are genuine pug ones. I have done one track day on them but I wouldn't think that would have destroyed them that quickly would it?

At 95,000miles old I am getting worried the clunk noises might be because the bearings inside the beam need changing.


Sad

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Posted 8th Jan 2010 at 23:41
lotek

Seasoned Pro

Location: Berkshire

Registered: 04 Dec 2007

Posts: 6,107

Status: Offline

Post #24
most likely bearings mate, is the beam lowered? if so then its even more likely.
i have the same problem amongst others. just gotta wait for the snow to go before i put my new beam on Sad
Posted 8th Jan 2010 at 23:48
paul_gti6_uk

Seasoned Pro

Location: Southampton

Registered: 21 Dec 2005

Posts: 1,380

Status: Offline

Post #25
I have a set of solid mounts sat under the bed waiting to be fitted. Got them last year but havent gotten around to fitting them yet.

Lotek I am worried it is what you say though and yes the rear end was lowered about 15000miles ago. I'm just not sure how you distinguish the knocking noise between bearings and rear mounts failing.

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Posted 13th Jan 2010 at 01:13

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