Omega Owners Forum

Omega Help Area => Omega General Help => Topic started by: kcl on 26 August 2008, 11:35:47

Title: "Clunks" from the rear (right hand side)
Post by: kcl on 26 August 2008, 11:35:47
Strange clunks have been heard lately from the rear (suspension?). Sometimes, when driving VERY slowly over a bump or curb there's a clear clunk -noise from the right hand side rear. Not all the times, not when rocking the car, nothing when I tried to check all the joints and bushes with a pry bar (no play wheresoever), no excessive tyre wear, its not the exhaust... No, not any loose items in the boot etc. Annoying to have the sound on the car, does not affect drive etc. What it could be? Shocks were done 2007, bearing to that side also and nothing else on the rear axle..
Title: Re: "Clunks" from the rear (right hand side)
Post by: Drewomega on 26 August 2008, 11:45:07
Quote
Strange clunks have been heard lately from the rear (suspension?). Sometimes, when driving VERY slowly over a bump or curb there's a clear clunk -noise from the right hand side rear. Not all the times, not when rocking the car, nothing when I tried to check all the joints and bushes with a pry bar (no play wheresoever), no excessive tyre wear, its not the exhaust... No, not any loose items in the boot etc. Annoying to have the sound on the car, does not affect drive etc. What it could be? Shocks were done 2007, bearing to that side also and nothing else on the rear axle..


I have the very same thing on my 2003 Omega! I did have a post here somewhere, but unfortunately I am overseas at the moment. Didn't have time to fix before I left. Will be interesting to see your replies as that will be my first job when I get back to Blighty. (Whenever that will be!)
Title: Re: "Clunks" from the rear (right hand side)
Post by: Marks DTM Calib on 26 August 2008, 12:05:24
Check the rear springs for breakage
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 26 August 2008, 12:34:18
Based on visual inspection + pry bar its not the springs... I assume that a broken spring would be really cut off in to two pieces, so that would be clearly visible.

Any tricks to check the main bushes on the rear axle? What I did was lift the rear up and put the pry bar to almost every possible slot and tried to wiggle everything...
Title: Re: "Clunks" from the rear (right hand side)
Post by: feeutfo on 26 August 2008, 12:36:35
or, a long shot, hand brake shoe lineing fallen off and catching in the drum? Spring got to be favourite tho.
Title: Re: "Clunks" from the rear (right hand side)
Post by: Marks DTM Calib on 26 August 2008, 12:40:11
Quote
Based on visual inspection + pry bar its not the springs... I assume that a broken spring would be really cut off in to two pieces, so that would be clearly visible.

Any tricks to check the main bushes on the rear axle? What I did was lift the rear up and put the pry bar to almost every possible slot and tried to wiggle everything...


Not so easy to spot a spring broken as that.

You need to visualy inspect the upper and lower small turns on the sprin as its here they fail.
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 26 August 2008, 12:52:11
OK, will re-check the springs.

Handbrake not likely, works fine and just have serviced the brakes.
Title: Re: "Clunks" from the rear (right hand side)
Post by: jimmas on 26 August 2008, 13:31:00
yes had very similar problem and mine turned out to be broken spring
Title: Re: "Clunks" from the rear (right hand side)
Post by: jonathanh on 26 August 2008, 13:45:16
Quote
Strange clunks have been heard lately from the rear (suspension?). Sometimes, when driving VERY slowly over a bump or curb there's a clear clunk -noise from the right hand side rear. Not all the times, not when rocking the car, nothing when I tried to check all the joints and bushes with a pry bar (no play wheresoever), no excessive tyre wear, its not the exhaust... No, not any loose items in the boot etc. Annoying to have the sound on the car, does not affect drive etc. What it could be? Shocks were done 2007, bearing to that side also and nothing else on the rear axle..

is everything tied down on that side?  jack for example, anything else floating around in there.  I sometimes get this from the left, its my detachable towbar jumping around in the spare wheel
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 28 August 2008, 11:38:09
Emtied the whole car to eliminate any possibility for loose items. It maight be the spring as Marks DTM Calib suggested, have to re-re-check the small dia section. If spring is broken as you wrote, is it clearly broken or do I take the spring off to check it completely?
Title: Re: "Clunks" from the rear (right hand side)
Post by: jonathanh on 28 August 2008, 12:25:28
Quote
Emtied the whole car to eliminate any possibility for loose items. It maight be the spring as Marks DTM Calib suggested, have to re-re-check the small dia section. If spring is broken as you wrote, is it clearly broken or do I take the spring off to check it completely?

no need to take it off but jack the car up securely and have a good look at it.  Compare sides to see if there is a difference.  you'll probably spot a jagged end if you have a break
Title: Re: "Clunks" from the rear (right hand side)
Post by: Alex W on 28 August 2008, 19:29:37
Rear Springs are apparently a known weakness and breaks are sometimes very difficult to spot.

Mine actually passed an MOT when both rear springs were broken.

Picked up by another garage doing a service two weeks later. "Rear springs have gone mate, that's an MOT failure you know!". I took it back to the MOT tester in case I was being deceived and he still had trouble finding the breaks which were right at the very top.
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 14 October 2008, 12:03:28
It was no tthe springs. However, the right hand side one was in strange shape, e.g. it was kind of bent. But still I get the cklunks... Any ideas? Only occasionally, can not tell where or when, but sometimes when cornering and sometimes when reversing over some bump.
Title: Re: "Clunks" from the rear (right hand side)
Post by: nen3906 on 14 October 2008, 17:51:49
Mine is identical....lol    Its more of an annoying tapping noise as if there is something loose, drives me mad.......more of an excuse to tur the radio on louder  lol
  I would be interested to see if anyone has similar and what the issues are.
Title: Re: "Clunks" from the rear (right hand side)
Post by: webby23 on 14 October 2008, 18:58:39
I had this on our old 2.0 CD, facelift.

Found that it was the fire extinguisher bashing around in the compartment where the first aid kit goes (on the right hand side as you open the boot)

Easy fix (removed the fire extinguisher)

 ::)

Title: Re: "Clunks" from the rear (right hand side)
Post by: ARH1 on 14 October 2008, 21:25:29
I have got it just now on my estate. I suspect the rear anti roll bar links. but havnt got under to have a good look as yet. the rattle from mine is on both sides and can be heard on smooth surfaces to rough roads.
Arh1
Title: Re: "Clunks" from the rear (right hand side)
Post by: Lazydocker on 14 October 2008, 23:14:49
I have a broken spring on mine and have a similar noise... However I have quietened it down considerably by adjusting the boot closure as the boot lid was rattling!!  :o :o ::) ::)
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 15 October 2008, 05:56:57
It's not rattling, it's a noise like a spring hitting to something. And very occasional, just happens sometimes and impossible to find/hear when wanted. Someone told me that it might be coming from some other parts of the car, I must confirm and re-check the front also... Very strange and very annoying although not affecting driving or handling...
Title: Re: "Clunks" from the rear (right hand side)
Post by: feeutfo on 15 October 2008, 09:10:16
these where taken with the wheel off
(http://i344.photobucket.com/albums/p326/chrisgixer/22092008183.jpg)
(http://i344.photobucket.com/albums/p326/chrisgixer/22092008182.jpg)
Title: Re: "Clunks" from the rear (right hand side)
Post by: kcl on 15 October 2008, 09:31:31
I see your point, but I changed the springs without any success...