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Grimble



Member Since: 21 Aug 2020
Location: Staffordshire
Posts: 256

United Kingdom 
Restricted performance

Never seen this in over 4 years of ownership. Just came on about 5 miles after leaving home. Stopped at a mates 2 miles later. Started up again after 30 mins and no light came on. Ran around town a bit all ok. Came on again after a few miles on the way home, again after a short stop it was clear.
Battery seems fine and everything else is working without any warning lights on. Mostly use the car for longish motorway journeys and it's never missed a beat.
Any clues what to look for before I book it in?
I don't have a code reader. RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

Post #644506 Wed Oct 02 2024 4:55pm
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NoExpert



Member Since: 28 Jan 2022
Location: Poznań, Poland
Posts: 474

Poland 2011 Range Rover Sport 3.0 TDV6 HSE Lux Fuji White

My first guess is IAP/MAF correlation. Somewhere between the MAF and inlet manifolds is a leak. Loose hose clip, split pipe, split manifold, etc.
Next guess would be a secondary turbo solenoid sticking. 2011 RRS HSE Luxury 3.0 TDV6 Fuji White on Ebony/Ivory
Born and raised in So Cal. Moved to the UK in 2018 for a few years. Now in Poland and looking at moving back to the UK.


Last edited by NoExpert on Mon Oct 07 2024 7:34pm. Edited 1 time in total

Post #644508 Wed Oct 02 2024 10:07pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8958

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Sounds like a split inlet manifold. Does it do it when you accelerate and get the revs up? Turning off and on again resets it until the next time the split opens. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #644519 Thu Oct 03 2024 8:58am
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Grimble



Member Since: 21 Aug 2020
Location: Staffordshire
Posts: 256

United Kingdom 

Thanks for the replies. Other than code reading, is there a physical check I can do? Are the inlet manifolds easy to inspect without removal. I'm handy enough mechanically, but not on engines this complex. Can a leak be heard? RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

Post #644521 Thu Oct 03 2024 10:24am
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8958

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

When my manifold split, the indie that I use said they do a quick check by doing a torque converter stall check - stand on the brakes and add throttle 'til it won't rev any more (about 2.5k revs). Apparently, the inlet manifold split can be heard to whistle quite noticeably. Obviously, you need a trusted helper to do this more easily. 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #644522 Thu Oct 03 2024 11:28am
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Grimble



Member Since: 21 Aug 2020
Location: Staffordshire
Posts: 256

United Kingdom 
Restricted performance (update)

Smoke test done.
Both mainfolds split, the drivers side badly, the passenger side not so much.
Funnily enough I noticed a significant increase in fuel consumption on my last long trip, which I make regularly and the indy confirmed that a split manifold would have this effect although it was unusual to have both go at the same time.

So next question, do I go for an original LR part or is there an alternative OEM that could be recommended?
Dont fancy paying a lot for a branded cardboard box. RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

Post #644591 Mon Oct 07 2024 12:17pm
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RRSTDV8



Member Since: 12 Aug 2011
Location: Northamptonshire
Posts: 8958

United Kingdom 2012 Range Rover Sport SDV6 HSE Orkney Grey

Found this on the sister site, not sure if it's useful. https://www.disco3.co.uk/forum/30-sdtdv6-i...05583.html 2012 SDV6 - it's missing a couple of cylinders
2008 TDV8 - it was a labour of love and is much missed

Post #644594 Mon Oct 07 2024 2:26pm
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2 RRS



Member Since: 04 Sep 2016
Location: Shropshire
Posts: 139

United Kingdom 2013 Range Rover Sport SDV6 Autobiography Bourneville
Re: Restricted performance (update)

Grimble wrote:
Smoke test done.
Both mainfolds split, the drivers side badly, the passenger side not so much.
Funnily enough I noticed a significant increase in fuel consumption on my last long trip, which I make regularly and the indy confirmed that a split manifold would have this effect although it was unusual to have both go at the same time.

So next question, do I go for an original LR part or is there an alternative OEM that could be recommended?
Dont fancy paying a lot for a branded cardboard box.


In this scenario, I'd be going genuine, it's a big labour job, you don't want to be tackling again, buy cheap, buy twice definitely applies in this case. Early MY vehicles were susceptible to failures as the cover was the same design for the single turbo engines, but with the SDV6 the boost pressure is higher hence the failures, hence LR re-designed them mid 2015.

Post #644601 Mon Oct 07 2024 7:30pm
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Grimble



Member Since: 21 Aug 2020
Location: Staffordshire
Posts: 256

United Kingdom 

Job done. One was cracked and the other was split on the seam. I think these were the original parts as the fomoco logo was visible. Hopefully that's it for a while.
Rather poor engineering design I think to have such a critical part fail in this way. RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

Post #644830 Tue Oct 22 2024 7:35am
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2 RRS



Member Since: 04 Sep 2016
Location: Shropshire
Posts: 139

United Kingdom 2013 Range Rover Sport SDV6 Autobiography Bourneville

The covers were carried over from the TDV6 single turbo engine that ran less boost, where they were adequate, LR realised mid 2015 they were too weak for the SDV6 and hence redesigned them. You should be OK from now on.

Post #644831 Tue Oct 22 2024 7:45am
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Grimble



Member Since: 21 Aug 2020
Location: Staffordshire
Posts: 256

United Kingdom 

Quick run up the M6 yesterday to West Lancs. 170 mile round trip. May be imagining it but the engine has never felt better. RRS HSE Dynamic SDV6 2014

Nemo mortalium omnibus horus sapit

Post #644881 Thu Oct 24 2024 7:11am
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NoExpert



Member Since: 28 Jan 2022
Location: Poznań, Poland
Posts: 474

Poland 2011 Range Rover Sport 3.0 TDV6 HSE Lux Fuji White

That happens when you plug the air leaks. 2011 RRS HSE Luxury 3.0 TDV6 Fuji White on Ebony/Ivory
Born and raised in So Cal. Moved to the UK in 2018 for a few years. Now in Poland and looking at moving back to the UK.

Post #644891 Thu Oct 24 2024 2:17pm
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erickwan



Member Since: 27 Mar 2016
Location: P Jaya
Posts: 138

Malaysia 

My assumption is with multiple part numbers, there must be a revision with each successive number, and the previous ones are unacceptable by Ford / Citroen / Land Rover.


Post #644902 Fri Oct 25 2024 1:16am
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