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Egr valves
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mel w
 


Member Since: 06 Jan 2020
Location: derby
Posts: 35

England 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3
Egr valves

Morning
Done a search and can't find recent post
My discovery 3 is 2008 v6 diesel
Getting egr sticking causing eml to come on
If i take off the egr valves will the car
A. Pass a mot
And
B. Need to be put on a computer to cancel the light

So many conflicting stories

Cheers Mel
  
Post #222929610th May 2021 7:27 am
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G3Z
 


Member Since: 16 Dec 2018
Location: South Wales
Posts: 536

Wales 2007 Discovery 3 TDV6 GS Manual Zambezi SilverDiscovery 3

Anything post 2007 > EU4 will need the software update to stop the EML light coming on.

If you need the MOT before affording then software update - buy an Autel code reader and erase the EML codes, it should stay off long enough to get you through an MOT.

Emissions wise, blanking the EGR’s will still pass the MOT.
 Defender 110 2.4 TDCi Utility Station Wagon.

2007 Disco 3 GS TDV6 Manual
200,000+ mile club 😎 
 
Post #222934410th May 2021 12:22 pm
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itguy
 


Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181

2006 Discovery 3 TDV6 HSE Auto Bonatti GreyDiscovery 3

You technically need them installed and working (with no light on) to pass an MOT.

Many people blank them off but leave the pipes in place, then get a software update to switch the light off.

You have an 08 car and this will be required (the software). Pre 07 models don't need the software patch as failing EGR valves don't bring the engine light on.

MOT testers can't dismantle things to test them, so as long as a visual check of the EGR pipes etc is all good, then you should be ok.
  
Post #222934610th May 2021 12:23 pm
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PROFSR G
 


Member Since: 06 Mar 2017
Location: Lost
Posts: 4577

Ukraine 2009 Discovery 3 TDV6 Commercial XS Auto Stornoway GreyDiscovery 3

Don't remove the EGR's, just order a blanking kit and remove the butterfly from the throttle housing You can then upload a software patch via your GAP IID diagnostic tool to tell the PCM to ignore the EGR's. (BAS Remaps)

All of this leaves the system 95% intact and there is no visual evidence of modification. The 5% that is visible is under the engine cover where the pipes would have previously connected to the throttle housing.

The tester won't (can't) remove the cover.
 yµ (idµ - eAµ) ψ=mψ

 
 
Post #222934810th May 2021 12:26 pm
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mel w
 


Member Since: 06 Jan 2020
Location: derby
Posts: 35

England 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3

Thanks for the replies
Are the egr valves serviceable
Can you take them off and clean them?
  
Post #222939010th May 2021 3:46 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

You can remove and replace / clean but you’ll probably be doing it again in a few months. Best to blank. There’s a good place on J6 M6 that did my reprogramming to remove them from the ecu if you don’t mind a little drive down from Derby. The physical Blanking is pretty simple to do, if you need help I’m happy to give you a hand
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕 
 
Post #222939310th May 2021 3:51 pm
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mel w
 


Member Since: 06 Jan 2020
Location: derby
Posts: 35

England 2008 Discovery 3 TDV6 HSE Auto Unknown ColourDiscovery 3

I've got a mate who can do everything
I'm just trying to figure out the best option
Can you leave them in and just delete on computer so they don't work
Did that on a vauxhall I had a few years ago
  
Post #222939410th May 2021 3:56 pm
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KevinD3
 


Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1192

England 2008 Discovery 3 TDV6 HSE Auto Stornoway GreyDiscovery 3

Yep, you leave them in but need to blank, if they get stuck in the open position, get the fire extinguisher ready as they keep pumping hot exhaust gas to the manifold until it melts :s
 2008 HSE Stornoway Grey

My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕 
 
Post #222940110th May 2021 5:01 pm
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