Omega Owners Forum
Omega Help Area => Omega General Help => Topic started by: Mr.OmegaMan on 19 May 2015, 15:53:55
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It can't be the exhaust I have triple checked everything is secure, The shocks are around a year old along with the springs so can't be them all good quality parts, Everything in the boot is secure what little there is in there.
Here's a short clip which does pick up some of the sound I'm on about on rough surface roads.
http://youtu.be/czfL8rpNkwA
I'm not sure what else it could be tbh :-\
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Hmm, that is quite difficult to diagnose from afar. I presume you've been in the back of the car with the seats down whilst someone else is driving? The reason I ask is to rule out interior trim.
Top mounts
Drive shafts (IE CV Joints)
ARB Drop links
ARB Bushes
Wishbone bushes
Heat shield
Lose fuel filter
There are so many things it could be, the best way to find it is to jack the rear up and then have a pry around. With the exhaust, normally, I just stick my foot on the tail pipe and give it a good push/kick/rattle around to see if I can hear anything.
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Thats sounds like your spring has snapped
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Hmm, that is quite difficult to diagnose from afar. I presume you've been in the back of the car with the seats down whilst someone else is driving? The reason I ask is to rule out interior trim.
Top mounts
Drive shafts (IE CV Joints)
ARB Drop links
ARB Bushes
Wishbone bushes
Heat shield
Lose fuel filter
There are so many things it could be, the best way to find it is to jack the rear up and then have a pry around. With the exhaust, normally, I just stick my foot on the tail pipe and give it a good push/kick/rattle around to see if I can hear anything.
I haven't tried/checked the highlighted as of yet :y, But visual everything seems fine underneath. Just need to try and eliminate things :-\
Thats sounds like your spring has snapped
Sachs springs bought around July last year, Also passed an MOT a few days ago. Did also inspected the springs myself mind and they are intact.
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As the noise occurs when on suspension travel, could you stand in the boot and jump up and down? Not to replicate the fault, but to entertain your neighbours :D
Seriously, if it makes the noise stationary, then it's got to be suspension pretty much.
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As the noise occurs when on suspension travel, could you stand in the boot and jump up and down? Not to replicate the fault, but to entertain your neighbours :D
Seriously, if it makes the noise stationary, then it's got to be suspension pretty much.
Tried something similar... ::) opened the boot lid an push up and down lightly and firmly by arms and then by sitting up and down.. Not a peep completely silent. Rear suspension is a little on the firm side possibly with bilstein shocks but don't see that causing this issue :-\
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Ive got a similar sound but a bit lighter , i think its top mount nearside :(
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Ive got a similar sound but a bit lighter , i think its top mount nearside :(
It's not an unbearable sound but nevertheless it's still there gnawing at your sanity ;D
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I'm gonna go with......Shock mount.
Could be anything though tbh. But it is in relation to small stutter bumps, not something you can re create with a shove on the rear.
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Worth the pointing your camera at the top mounts in the boot?
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I'll have rear subframe bushes.
That's what's causing mine to clonk like a four letter word.
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Did you fit the light weight rubbish top mounts supplied with the shocks?
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Did you fit the light weight rubbish top mounts supplied with the shocks?
More than likely, Can't recall tbh. But probably yeah seen as they where new.
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Did you fit the light weight rubbish top mounts supplied with the shocks?
More than likely, Can't recall tbh. But probably yeah seen as they where new.
Jack the car up and wiggle the shock body where it meets the dust cover... any play and replace the topmounts using the following parts:
90447244 Cup x 4 £2.40 (washer, four required)
90250288 Rubber Bumper x 2 £3.97 (top mount upper rubber, two required)
90447245 Insulation x 2 £3.14 (top mount lower rubber, two required)
90447246 Spacer Sleeve x 2 £2.49 (fits inside top mount lower rubber, two required)
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Did you fit the light weight rubbish top mounts supplied with the shocks?
More than likely, Can't recall tbh. But probably yeah seen as they where new.
Jack the car up and wiggle the shock body where it meets the dust cover... any play and replace the topmounts using the following parts:
90447244 Cup x 4 £2.40 (washer, four required)
90250288 Rubber Bumper x 2 £3.97 (top mount upper rubber, two required)
90447245 Insulation x 2 £3.14 (top mount lower rubber, two required)
90447246 Spacer Sleeve x 2 £2.49 (fits inside top mount lower rubber, two required)
Thanks Al, Will give it a once over this week sometime :y
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Interesting you post this, was thinking of doing similar. Have same with my 2.2...
Go over a speed bump (a full width of road type one) and it's fine no noise. But over rought pot hole ridden stuff, particularly on the start of my run, I get a rumbling/knocking noise from one corner.
I need to check the spring is ok, but wondering if it was rear donut bush. As they are original to the car ::)
Reading this chain though, shock mount could make sense. As I was typing this reply, I searched for threads on me ordering shocks on the 2.2. Found some, from 2008 :o
So they are a little older than I think ;D
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Tunnie, my bet would be on anti-roll bar mounts with your description.. a full width pot hole (hit straight on) will cause the whole bar to go up and down in unison with very little torsional load on it; a pot hole or other object that causes a single side deflection will twist the ARB and cause it to bang on one side if the mounts are loose/broken/etc..
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Tunnie, my bet would be on anti-roll bar mounts with your description.. a full width pot hole (hit straight on) will cause the whole bar to go up and down in unison with very little torsional load on it; a pot hole or other object that causes a single side deflection will twist the ARB and cause it to bang on one side if the mounts are loose/broken/etc..
Cheers, sounds spot on. :y There are full size speed bumps leaving work = No Sound. Rough roads near home = Knocking.
More I think about, more it does sound like front droplink noise but from the rear.
ECP have some, £15, but 6 week order time. :o
Will check out AGP I think.