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Restricted performance
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schutte_ej
 


Member Since: 08 Sep 2018
Location: Boars Head
Posts: 10

United Kingdom 2011 Discovery 4 3.0 TDV6 Landmark LE Auto Unknown ColourDiscovery 4

Checked the inter cooler hose and all good. I did check the sensor and it’s very dirty, hopefully spray will come tomorrow.

Thanks

Thanks for all the info so far!
  
Post #21592596th Jul 2020 6:58 pm
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darrind
 


Member Since: 04 Jul 2008
Location: In A World of My Own!
Posts: 2863

England 2013 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Good Luck Thumbs Up

I hope its nothing more than a clean needed

Thumbs Up Thumbs Up
 Must stop buying shiny toys....  
Post #21592636th Jul 2020 7:11 pm
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UffBrock
 


Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Corris GreyDiscovery 4

Also, what is described above as the airbox can become detached - or partially displaced - from the throttle body. It's worth checking.
  
Post #21592776th Jul 2020 8:10 pm
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schutte_ej
 


Member Since: 08 Sep 2018
Location: Boars Head
Posts: 10

United Kingdom 2011 Discovery 4 3.0 TDV6 Landmark LE Auto Unknown ColourDiscovery 4

So spray arrived! All clean, drive home on motorway all went well until after 2 hours the signal came up again! Switched the engine off at the tunnel and sign is gone again! I’m confused, could it be a faulty sensor? Shall I switch them around to check this?
Thanks
  
Post #21597758th Jul 2020 8:36 pm
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Moo
D3 Decade 


Member Since: 13 Aug 2010
Location: Wiltshire
Posts: 13896

Ukraine 2005 Discovery 3 TDV6 S Manual Zambezi SilverDiscovery 3

I'd switch them around Thumbs Up
 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 #21598018th Jul 2020 10:20 pm
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DiscoJeffster
 


Member Since: 27 Feb 2016
Location: Perth
Posts: 204

Australia 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

You have an air leak plain and simple. You need to find it. P006A is the error you get when the MAF is seeing a certain flow of air and the MAP sensor is not seeing the corresponding boost because the air is leaking somewhere. If none of this means anything, take it somewhere and get them to find the leak for you.

Check the throttle body -prone to splitting at the Y junction.
Check BOTH manifolds.
Check the intercooler hoses.
Check the intercooler itself.

As has been said already, you need someone to do a smoke test to find the leak.
  
Post #21599659th Jul 2020 1:45 pm
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schutte_ej
 


Member Since: 08 Sep 2018
Location: Boars Head
Posts: 10

United Kingdom 2011 Discovery 4 3.0 TDV6 Landmark LE Auto Unknown ColourDiscovery 4

Hi
thank you for the reply, today I drove without any issue for 2 hours however not on the motorway...I'm confused to if it is intermittent we don't see this all the time?
  
Post #21599849th Jul 2020 3:46 pm
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DiscoJeffster
 


Member Since: 27 Feb 2016
Location: Perth
Posts: 204

Australia 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

because it required the vehicle to see a leakage. If you are cruising and not using boost then you are likely not losing much pressure and thus you don't trigger the issue. Typically people see it when they either use the car hard or they go up steep hills, or are towing. Anything that causes the vehicle to be in a heavy load situation normally shows it up.
Sometime it can be the MAF sensor that can cause the issue. (it's misreading), but less common than a leak. This is harder to diagnose and typically I'd rule out all leaks via a smoke test before trying the MAF as the cause.
  
Post #216018810th Jul 2020 10:03 am
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UffBrock
 


Member Since: 18 Mar 2011
Location: Oxfordshire
Posts: 156

United Kingdom 2016 Discovery 4 3.0 TDV6 Graphite LE Auto Corris GreyDiscovery 4

Do have a look at Desb's post "Reduced Performance when towing caravan" if you haven't already.
  
Post #216020410th Jul 2020 10:44 am
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Nigel McBurney
 


Member Since: 13 Mar 2008
Location: Hampshire
Posts: 20

England 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3
Reduced performance

My 11year old d4. Had the orange warning light come reduced performance. Come on quite regularly,found out from a friend who had similar warning lights on his Peugeot van re timing that the solution was to press the starter button but not the brake,this allowed the electronics to fire up,wait 5seconds then press brake pedal and start engine,so far after 3 months problem has gone away,no more warnings.
  
Post #225071311th Sep 2021 3:24 pm
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DaveJLBI
 


Member Since: 07 Mar 2014
Location: Clare
Posts: 661

Ireland 2014 Discovery 4 3.0 TDV6 HSE Auto Loire BlueDiscovery 4

Good evening.
Why do these things happen on Friday evening???
Have the Restricted Performance / Red Triangle pop up when I started the engine to head home from work this evening. Had a quick look in the dark but no obvious pipe split, will look for the mist in the morning. After a few times of starting it again when I got home to see if it clears (which it didn't), the check engine light has now also come on - is that usual. I could not find much on the search re CEL with restricted performance.

I need to use it for a few mixed journeys tomorrow, am I ok to tip along gently until I can get it checked next week? Happened just in time for my wife to be heading away with the other car for the week with her work - typical timing.

Would be grateful for any tips re CEL. Thanks in advance
  
Post #226185212th Nov 2021 8:44 pm
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