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Jordan Miller



Member Since: 08 Sep 2008
Location: Mackay
Posts: 7

Australia 2008 Freelander 2 TD4 SE Auto Zermatt Silver
Rear wheels making noise/ slipping

Hi all.

I have an issue with my 2008 FL2. When turning on greater than a 45 degree angle - the rear wheels feel like they are slipping/ scrubbing. To me it feels like the rear wheels arent following the rest of the car and are fighting the turn. When you apply power into the turn the car sometimes gets a strong vibration through it.

I have had the diff replaced - however the issue started before the diff failed. Maybe the two are connected?

Someone has suggested that this may be caused by the rear trailing arm bushes being shot.

Any thoughts?

Thankyou, Jordan.

Post #154903 17th Sep 2012 2:10 am
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4642

If the turn is from stationary, then it's kinda normal up to a point, as the Haldex is always energized when starting to move from stationary.
What you feel is the phenomenon named wind-up.
If you didn't had the Q106 and the update for the rear bearing static load done, then have them done.

Post #154908 17th Sep 2012 6:25 am
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Dave



Member Since: 04 Jul 2007
Location: Somewhere Near You
Posts: 2666

Scotland 2012 Freelander 2 SD4 HSE Auto Indus Silver

Wind-up Question
Never known this to be present on a full-time 4x4 system, only on a part time 4x4 system where there isn't a center diff to allow the front and rear axles to turn at different speeds.

If it is wind-up then I would think the haldex system has a fault Question ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

Post #154934 17th Sep 2012 11:37 am
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4642

Well, depends on the type of full-time 4x4 system...

In the case of FL2, when Haldex is fully energized, the system behaves like a 4x4 system that has a center differential and the diff is _locked_.
The Haldex is used to connect, on demand, through its clutches, the rear axle.
When is fully energized and the power flows unrestricted through it, the front and rear axles will rotate with the same speed. Therefore the wind-up.
See here the same system as in the FL2's case: https://www.freel2.com/gallery/albums/user...x_gen4.pdf

No, the Haldex is not at fault. And you can say that neither his firmware is.
It is just the result of a compromise between a problem-free take-off, in any situation, and an improper use of the system that generates that wind-up.

The Q106 and those later firmwares that should be applied when you change the rear bearing improve this compromise and try to extend component life.

Post #154975 17th Sep 2012 7:47 pm
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Dave



Member Since: 04 Jul 2007
Location: Somewhere Near You
Posts: 2666

Scotland 2012 Freelander 2 SD4 HSE Auto Indus Silver

Thanks for the explanation Alex, I stand corrected Thumbs Up
So can one assume that the FL2 doesn't have "full time" 4 wheel drive system like the Discovery/Range Rover/ Defemder, but has a "part time" 4 wheel drive system that acts like a "full time" system Question ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

Post #154978 17th Sep 2012 8:10 pm
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rchrdleigh



Member Since: 18 Aug 2007
Location: Somewhere in the East of England
Posts: 1601

England 2011 Freelander 2 TD4 XS Manual Baltic Blue

It's a full time 4 wheel drive system but unlike the ones fitted to Discovery/Range Rover/Defender.

The 4 wheel drive system in Freelander (and Evoque) varies the distribution of drive between front and rear axles depending on the loading at the time. For example in a straight line at 70mph drive is delivered 70% to the front axle and 30% to the rear, change lanes quickly and the system will almost instantaneously change to a 50/50 split. When moving off from a standstill it will deliver drive 90-95% to the front 5-10% to the rear. There will always be some drive on the rear axle, making it a full time 4 wheel drive system.

Post #154983 17th Sep 2012 8:39 pm
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taztastic



Member Since: 03 Feb 2011
Location: North West
Posts: 8652

England 

rchrdleigh wrote:
When moving off from a standstill it will deliver drive 90-95% to the front 5-10% to the rear.


I think its the opposite to that when setting off

Post #154987 17th Sep 2012 8:57 pm
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4642

As LR states, it's a "front oriented" automatic all wheel drive.
The power is transferred to the rear only "on demand" and at start from standing still.

Read thoroughly the document below for clarification.
Especially bottom part of page 3 and first part of page 5 where there is also some TR info.
https://www.freel2.com/gallery/albums/user...0Drive.pdf

Post #154997 18th Sep 2012 12:16 am
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Dave



Member Since: 04 Jul 2007
Location: Somewhere Near You
Posts: 2666

Scotland 2012 Freelander 2 SD4 HSE Auto Indus Silver

Thumbs Up ______________________
2011 Full Fat RR 4.4 TDV8
2012 FL2 SD4 Auto HSE
2013 Kawasaki Versys 650

Post #154999 18th Sep 2012 5:36 am
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