Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Right aswell as my horn not working, I thought Id try and clear up this problem too!
My car has always knocked since the day I had it. Its done 127,500 miles, and was on original shocks and springs - Vauchall told me that was the problem. The knocking occurs when the I go over bumps, or the car has more than 3 people in it - it also scrubs too?
I have now replaced the standard shocks with newer GSi shocks, and -35mm GMAX springs, but still it bloody knocks!!! Has anybody else had this problem? We had a look yesterday for signs of things hitting other things, and scrub marks etc, but saw nowt?
Any help would be good. Cheers 
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abdus
Member
Registered: 23rd Feb 06
User status: Offline
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ur backbox?
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ed
Member
Registered: 10th Sep 03
User status: Offline
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Your exhaust is knocking on the rear beam. Time for new exhaust rubbers. Take it to an exhaust place, they will stick it up on the ramps and take a look for ya. Much easier than lying under it trying to see where it's banging. They will probably pop on some new rubbers for free too, my local place did 
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Rob_Corsa
Member
Registered: 4th Apr 02
Location: Derbyshire
User status: Offline
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exhaust clamp on rear axel?
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Nope, barely moves and is the standard Pea shooter atm - so isnt that - pretty sure its to do with suspension somewhere along the line - Just not sure where!
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Oh, maybe Im wrong then! I wobbled that yesterday though, and it barely moved! Sounded further in the car than that tho?
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ed
Member
Registered: 10th Sep 03
User status: Offline
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If it's lowered then it will be the exhaust.
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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But it also did it before it was lowered?
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ed
Member
Registered: 10th Sep 03
User status: Offline
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quote:
Originally posted by hamman
Oh, maybe Im wrong then! I wobbled that yesterday though, and it barely moved! Sounded further in the car than that tho?
Yea, but it could still be the exhaust. Also, the exhaust runs along the whole car, it could be knocking anywhere.
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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True! So u reckon I need new rubbers? These cheap? If so, I'll get them done and see if that helps
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corsa120
Member
Registered: 4th May 02
Location: Northamptonshire
User status: Offline
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dude does it sound like ur goin over them white lines near junctions but not as loud???
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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Yeh kind of, but actually they can be pretty loud sometimes 
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corsa120
Member
Registered: 4th May 02
Location: Northamptonshire
User status: Offline
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ive had same right after taking a lowering kit of the car and putting standard stuff back on
checked all bolts and generally anything loose nothing, only started once changed suspension, im changing rear dampers first then springs
heard could be spring chatter
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Rich H
Member
Registered: 26th Oct 05
Location: West Sussex Drives: E46 M3
User status: Offline
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hmmm, ok will look into it - Will also look into new mounts for exhaust - A mates got a spare Poly one somwhere so will try that and see if that helps
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Look on the side of the backbox for slight damage where its been hitting the rear beam. Could also be the bend over the beam. Size of the box matters but in you case it might not be fitted right also.
You should be able to see damage. Mine used to do it terribly with weight in the back because when its fairly low the trailing arm is basically next to the back box instead of being underneath it.
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