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Suspension Errors when on ramp
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10forcash
 


Member Since: 09 Jun 2005
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United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

Winger wrote:
There's only one thing to do - all go round to Gary's place with Victor Meldrew
Rolling with laughterRolling with laughterRolling with laughterRolling with laughter  
Post #214864th Oct 2005 9:51 pm
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Gareth
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Careful - or I'll set me hedgehogs onto you Twisted Evil they're ard' y'know.
  
Post #214874th Oct 2005 9:53 pm
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10forcash
 


Member Since: 09 Jun 2005
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United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

Gareth wrote:
Careful - or I'll set me hedgehogs onto you Twisted Evil they're ard' y'know.
not as 'ard as Victor Meldrew's concrete one Shocked Wink  
Post #214894th Oct 2005 9:55 pm
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Gareth
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Rolling with laughter Rolling with laughter Rolling with laughter
  
Post #214914th Oct 2005 9:58 pm
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BN
 


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Winger wrote:
There's only one thing to do - all go round to Gary's place with Victor Meldrew


Sorry guys, but had to start sorting out for the trip at the weekend and missed out on the thread. Gary does lift on the wishbones with the car doors shut and the keys out of the ignition. So far 3 cars left in normal running height mode have displayed an error and took a bit of fiddling to let down the suspension. Haven't got a clue why, but it is becoming the format now. Must try with indicators flashing next time. Had it just been my car I would not have mentioned it as it had the steering ring defect, which for some reason messed up the suspension, how does that work then?
  
Post #215125th Oct 2005 6:58 am
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10forcash
 


Member Since: 09 Jun 2005
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United Kingdom 2007 Discovery 3 TDV6 HSE Manual Zermatt SilverDiscovery 3

might sound a bit daft, but....
try disconnecting the battery - once you've took the keys out and waited the requisite 2 minutes - you only need to disconnect the -ve
the only thing that needs resetting is the clock
  
Post #215135th Oct 2005 7:11 am
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Winger
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2016 Discovery 4 3.0 TDV6 HSE Auto Aintree GreenDiscovery 4

BN wrote:
Winger wrote:
There's only one thing to do - all go round to Gary's place with Victor Meldrew


Gary does lift on the wishbones with the car doors shut and the keys out of the ignition.

I think there's your explanation....lifting on the wishbones makes the suspension think that it is "stuck". As a result, the system freezes the height. That's my theory, and I am sticking to it!

Had it just been my car I would not have mentioned it as it had the steering ring defect, which for some reason messed up the suspension, how does that work then?

Probably because of the interlinkage of a number of vehicle systems - that's why diagnosing faults is clearly so difficult.
  
Post #215185th Oct 2005 7:20 am
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10forcash
 


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Lifting on the wishbones should keep the load on the suspension, thereby preventing the suspension dropping... BN, are you sure it was supported on the wishbones and not on the chassis legs or wishbone mountings? were the wheels hanging or did they appear to be in their normal position within the wheelarch?
  
Post #215195th Oct 2005 7:27 am
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Slimer
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10forcash wrote:
might sound a bit daft, but....
try disconnecting the battery - once you've took the keys out and waited the requisite 2 minutes - you only need to disconnect the -ve
the only thing that needs resetting is the clock
And you'll loose all trip and mpg info The End  
Post #215215th Oct 2005 7:36 am
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Winger
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2016 Discovery 4 3.0 TDV6 HSE Auto Aintree GreenDiscovery 4

10forcash wrote:
Lifting on the wishbones should keep the load on the suspension, thereby preventing the suspension dropping... BN, are you sure it was supported on the wishbones and not on the chassis legs or wishbone mountings? were the wheels hanging or did they appear to be in their normal position within the wheelarch?


I think that the act of lifting on the wishbones, because of the multi-articulation of the suspension, is actually signalling to the control system that the suspension is frozen (read stuck); the result is that the system freezes at that height until it is reset.

Of course, there are plenty of places that you place a trolley jack to lift the vehicle, but remember that air suspension vehicles are jacked from the chassis, not the suspension arms. Go and try it both ways, and watch what happens to the height sensor using both methods.......
  
Post #215235th Oct 2005 7:49 am
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BN
 


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Definately on the wishbones everytime. I think Slimer is going up on Friday, so he can try his but not tell Gary about the problem, just ask to have a look underneath or something?
  
Post #215455th Oct 2005 9:10 am
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Slimer
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Ah but I'm not having the wheels fitted, just the tyres to them.
But I do have what I think is a slightly dodgy valve on the OSF wheel so I could get Gary to take the wheel off and fit a new valve
 The End  
Post #215485th Oct 2005 9:17 am
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BN
 


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Slimer wrote:
Ah but I'm not having the wheels fitted, just the tyres to them.
But I do have what I think is a slightly dodgy valve on the OSF wheel so I could get Gary to take the wheel off and fit a new valve


Si, thats what I suggested, silly person. Or as TFC would have put it 'stupid boy Pike' Rolling Eyes
  
Post #215595th Oct 2005 9:27 am
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BN
 


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So the mystery deepens. If the car is lifted on the ramp and the front wheels are lifted by the wishbones, the top of the wheels go outwards, i.e the wheels are pigeon toed slightly.

OK guys, could that be the answer, have we found something?
  
Post #216265th Oct 2005 2:25 pm
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Gareth
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BN wrote:
So the mystery deepens. If the car is lifted on the ramp and the front wheels are lifted by the wishbones, the top of the wheels go outwards, i.e the wheels are pigeon toed slightly.

OK guys, could that be the answer, have we found something?


Could be the 'TILT' sensor. The alarm has a device that tells the system that the car is moving, but the wheels aren't, i.e been jacked up, some scroat about to nick the wheels, so maybe the alarm electronics are interfering with the suspension?
  
Post #216385th Oct 2005 2:34 pm
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