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Restricted Performance- no faults on IID
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life - live it
 


Member Since: 14 Apr 2017
Location: Behind you
Posts: 1035

United Kingdom 2012 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4
Restricted Performance- no faults on IID

Mornings

Whilst on a 350 mile drive the dreaded Restricted Performance warning came up after 300 miles.
Managed to drive the remaining 50 miles.
When I got to my destination I plugged in the IID tool - no warning messages.
0n return trip the warning message came back on 50 miles into my journey. I stopped checked the warnings and nothing. ManAged to drive the 100 miles with restricted Performance.
Got to Cirensestor checked faults - none. The warning went off.
Was able to drive back to Northumberland with no issues. I did however keep to 70 mph in cruise.
The warning came back on 10 miles from home.
Checked under the engine cover this morning to find some oil on the left top of the engine. I take it that this would be the inlet manifold?.
I will add a picture shortly.
Is this a costly repair



Click image to enlarge



Thanks 

Last edited by life - live it on 17th Sep 2023 10:55 am. Edited 1 time in total 
Post #234807617th Sep 2023 10:00 am
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Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: UK
Posts: 14389

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

Sounds exactly like what happened when my manifold split. No fault codes and if I switched it off and then restarted it restricted performance went off enabling me to drive with a very light throttle. New Defender L663 110 SE (known as Noddy!)

Sold Volvo XC90 R-Design (known as Basil)

Sold - D4 HSE (Known as Gerty)

No longer the Old Buses original owner Sad
231,000 miles and counting
05 S manual owned from March 2005
D4 Face lifted
Still original injectors and turbo
V8 Front brakes
BAS Remap, Allisport Intercooler and deCat
EGRs blanked
T-Max split charge
Hanibal Expeedition rack
Prospeed ladder
Duratrac tyres
IID BT
BAS FBH control  
Post #234808017th Sep 2023 10:43 am
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life - live it
 


Member Since: 14 Apr 2017
Location: Behind you
Posts: 1035

United Kingdom 2012 Discovery 4 3.0 SDV6 XS Auto Corris GreyDiscovery 4

Thanks for the heads up Moo. Here’s hoping the warranty will cover it.
Shocked  
Post #234810217th Sep 2023 5:56 pm
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LRD4GAB
 


Member Since: 05 Nov 2020
Location: Tamworth
Posts: 499

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Corris GreyDiscovery 4

When I got restricted performance I couldn't find any codes, I'm a member of the gap iid page on Facebook, I think I was told to look in advanced or something  
Post #234812218th Sep 2023 6:30 am
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2889

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Take a look at pending faults - unless it is really badly split it will show as pending Must stop buying shiny toys....  
Post #234813518th Sep 2023 10:33 am
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Davethegeo
 


Member Since: 01 Oct 2015
Location: Edinburgh
Posts: 912

Scotland 2014 Discovery 4 3.0 SDV6 HSE Auto Corris GreyDiscovery 4

Happened to me too. No faults (pending or otherwise) and restricted performance went away if I switched off and on again. Seems to be happy as long as you don't go above 2000rpm. The patch of oil on the engine cover foam was diagnostic in this case. Can also feel a puff of gas if you hold your hand above the manifold (careful...!) while someone else revs the engine to ~3000rpm.
Had my inlet manifold fixed by a good local indie for £783. D1 300Tdi - gone
D2 Td5 ES (Alive remapped...mmm) - sadly gone
D4 2012 SDV6 XS - Stolen
D4 2014 SDV6 HSE - Shiny


  
Post #234814818th Sep 2023 1:42 pm
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