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Iona Disko
Member Since: 04 Jul 2008
Location: NE
Posts: 286
  
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| Suspension... Don't knock it |
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History:
2004 ex G4 Thai Challenge vehicle
Came to me with 10,000 miles
Had a £400 RAC inspection before I bought it.
List of faults was huge. And a reported suspension knock was noted on the RAC chap's test drive.
Problem:
Front suspension knock - particularly prone at low speed when one wheel is dropped into hole or lifts over uneven ground. Is a gentle thud barely perceptable and not present at speed.
Failed Solution:
After consulting with the DISCO3.CO.UK community it seemed that front lower ball joints and anti roll bar shims were needed. I had the ball joints done at 10,000 miles but the knock persisted.
I have only just managed to get the shims done. now at 23,000 miles. And the knock persists.
I have tried relentlessly to snag this problem. I have had just about everything replaced on the front including:
Both track rods
Anti roll bar bushes
checked for loose brake calipers
Drop links (front and rear)
Buit the knocking persists.
Questions:
What I am now wondering is...
The first set of front lower ball joints lasted the G4 abuse and 10,000 miles.
I have now had new ball joints for 13,000 miles and given the vehicle my own flavour of abuse.
Is it possible that the front lower ball joints are in need of replacement again?
My garage says they seem OK given there is no movement induced with a crow bar. But I really want to find what is causing the knock.
Also I suspect that I have the earlier ball joint type and understand that due to the ball joint problems they have been beefed up a little. Is there a way of identifying the part I currently have fitted - whether the new or old ball joint design?
Another thing.... the RAC inspection said there was play in the steering rack. The change in ball joints seemed to solve this symptom but I am curious to know if the steering rack is prone to early failure in vehicles that have been used off-road?
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 5th Dec 2008 12:08 pm |
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twizzle
Member Since: 23 Feb 2006
Location: near, far where ever we are
Posts: 223
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had the same "knock" from the offside for about 60,000 miles... had all the same things done as you..... sort of got used to it now like an old friend..... passed the MOT as well!! i'm lovin it....
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| 5th Dec 2008 6:03 pm |
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jjvd21
Member Since: 16 Jul 2007
Location: Chicago
Posts: 1070
  
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Had same symptoms, dealer finally agreed to replace steering rack. No more clunk, problem solved. 16 D4 Landmark
05 D3 HSE V8
THE original D4 spotter
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| 5th Dec 2008 7:54 pm |
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countrywide
Member Since: 16 Sep 2007
Location: UK
Posts: 6019
 
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Had this and in the end had the lower swivel joints replaced and it went away. Took 3 trips to dealer to find out what it was.
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| 5th Dec 2008 7:57 pm |
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PJ
Member Since: 19 Oct 2005
Location: East Sussex
Posts: 52
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Replacement of steering column intermediate shaft at 22,000 miles cured it for me TDV6 2004 Auto Zambezi Silver Badged SE not quite an S with Nav & Rear DVD
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| 5th Dec 2008 9:50 pm |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
 
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It has to do with the steering colum/rack not the ball joints. There wasa TSB for it and is on here somewhere.
Models: LA - Discovery 3
LS - Range Rover Sport
Title: FAQ 22241 - Steering light knock over bumps.
Engineer Name: Townsend, Ken
Last Modified: 24-APR-06
Category: Chassis
Symptom: 303000 Steering/Handling
Content: User will report light knock over bumps. Some will show slight free play in steering.
Cause is LOWER steering shaft (Under bonnet) NOT the steering rack.
With vehicle static engine off check for free play in steering aprox +/- 3 degrees, with gentle input.
Also some vehicles may exhibit a light knock on uneven surfaces between 10 to 15 mph.
If the shaft is the cause please use new part number QMN500240 (RHD) or QMN500250 (LHD) to repair as this has improved characteristics for noise. Part was introduced to production at L319 - LA390436
L320 - LS956379. If shaft does not resolve knocking noise please submit an EPQR and contact dealer technical support.
http://www.disco3.co.uk/forum/topic25146.html “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 6th Dec 2008 2:54 am |
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Iona Disko
Member Since: 04 Jul 2008
Location: NE
Posts: 286
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Thanks CaverD3... that sounds like the information I was after.
I struggle with the search facility on this site and find it very difficult to locate any historic posts. Great information.
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| 6th Dec 2008 9:04 pm |
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caverD3
Member Since: 03 Jul 2006
Location: Oberon, NSW
Posts: 6922
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Put the exact words you are looking for in "quotes" I find it gives better results.  “There are only three sports: bullfighting, motor racing, and mountaineering; all the rest are merely gamesâ€
Ernest Hemmingway
D4 3.0 Active Diff, Adaptive Lights, High Beam Assist, Surround Cameras, Privacy Glass.
D3 2.7:Adaptive Headlights,Electronic Rear Diff,ARB Bar,Blaupunkt Speakers,JVC Powered Subwoofer,Removable Snorkel,Mitch Hitch,Pioneer After Market Head Unit,Steering Wheel Control Adaptor,Remote Adjustable Supension Rod System, Taxside Dual Battery System.
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| 7th Dec 2008 2:20 am |
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catweasel
Member Since: 05 May 2006
Location: Bundaleer
Posts: 4805
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Iona Disko wrote:I struggle with the search facility on this site
try clicking on show keyword help next to the search box or use a third party search engine like google to search only this site.
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| 7th Dec 2008 2:56 am |
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