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root cause analysis
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6394

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4
root cause analysis

been reading all the mans checking all the points of failure and all but still have not managed to figure out why:

although wheel alignment has been done, brakes seems to be operating withing parameters car is still pulling to the left??

fuel consumption has gone down to Censored level although car well maintained serviced and all....

what suggestions would you all come up with on SERIOUS note this time to compile the list of thing to be checked for all owners to tick all the point on the list towards best possible vehicle setup for best performance

cheers  
Post #76431320th Feb 2011 12:31 pm
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DSL
Keeper of the wheelie bin 


Member Since: 11 May 2006
Location: Off again! :-)
Posts: 73071

Ukraine 

You getting any ENGINE SYSTEM FAULT events?? If so your turbo could well be Fooked and low mpg might be due to that not wheel problems.   
Post #76431720th Feb 2011 12:36 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6394

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

no DTC faults at all  
Post #76437720th Feb 2011 3:20 pm
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zarnd
 


Member Since: 23 Apr 2010
Location: Kent
Posts: 794

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

Does it pull to the left if you drive in the middle of the road? Alex

2007 D3 TDV6 HSE
2009 Caterham Supersport
2005 FFRR Vogue SE 4.2 Supercharged
2004 SL55 AMG  
Post #76451120th Feb 2011 6:17 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6394

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

no matter how flat the road is it pulls to the left weird huh  
Post #76452920th Feb 2011 6:46 pm
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wvlenthe
 


Member Since: 07 Jan 2009
Location: Arnhem
Posts: 1967

Netherlands 2005 Discovery 3 4.4 V8 HSE Auto Zermatt SilverDiscovery 3

I suppose this was a 4-wheel alignment and not only 1 axle?

Brakes not binding?
Wheel bearing?

good luck finding the problem

Wiljo D3 V8 HSE Auto in Zermatt silver - driveway version gone but not forgotten, only the living room cupboard version remains  
Post #76454520th Feb 2011 7:10 pm
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zarnd
 


Member Since: 23 Apr 2010
Location: Kent
Posts: 794

United Kingdom 2007 Discovery 3 TDV6 HSE Auto Zermatt SilverDiscovery 3

grzesiul wrote:
no matter how flat the road is it pulls to the left weird huh


What happens if you drive in the middle of the road and take your hands off the wheel?

Tyre pressures set correctly? Alex

2007 D3 TDV6 HSE
2009 Caterham Supersport
2005 FFRR Vogue SE 4.2 Supercharged
2004 SL55 AMG  
Post #76459820th Feb 2011 8:05 pm
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grzesiul
 


Member Since: 11 May 2008
Location: UK
Posts: 6394

Poland 2016 Discovery 4 3.0 SDV6 SE Auto Loire BlueDiscovery 4

keep the pressures at 34 front 38 rear check quite frequently and driving hands free cars wonders to the left???  
Post #76465120th Feb 2011 9:13 pm
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Dan_NL
 


Member Since: 19 Sep 2010
Location: world
Posts: 1213

I read too many of these threads to remember WHERE I read it.. But if your camber/castor is 'out' of the proper setting [so left different from right side] there is a difference in 'pull' so the left one might create a preference to turn left... I think it's this, or a caliper sticking due to wear. They block in the end position, letting the brakes "stick". But that's normally only with very high mileage;
> 200k or so...  
Post #76467620th Feb 2011 9:35 pm
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Andrew Hebron
 


Member Since: 16 Jan 2009
Location: Teddington
Posts: 501

England 2007 Discovery 3 TDV6 SE Manual Cairns BlueDiscovery 3

What tyres are you running? I had similar issue with General ATs, which was solved by swapping wheels diagonally. I think some chunky tyres have a very flat profile that can get worn with the road camber. That wouldn't help with the MPG, though. Andrew  
Post #76470020th Feb 2011 10:21 pm
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Bushwanderer
 


Member Since: 27 Nov 2007
Location: Northern Rivers, NSW, Australia
Posts: 2050

Australia 2005 Discovery 3 TDV6 S Manual Buckingham BlueDiscovery 3

To me, it sounds like a brake sticking (either disc or epb). When you have been driving for some time does one wheel feel hotter than the others? The Bearded Dragon  
Post #76470220th Feb 2011 10:33 pm
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