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DISCO3.CO.UK > Maintenance & Mods (D3)

Disconnecting EGR Valves
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wiggs
 


Member Since: 03 Sep 2006
Location: Manchester
Posts: 14372

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Auto Fuji WhiteDiscovery 4

No ..but shouldnt there be something showing / happening with the connector removed ? G4 Gone ...but not forgotten  
Post #4310491st Mar 2009 7:03 pm
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bellautos
 


Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532

United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

Yes normaly if open circuit happens it should flag a fault,
ill remove my connectors tomorrow and log it on to ids to see te results.

Pete  
Post #4310571st Mar 2009 7:11 pm
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BLACK BETTY
 


Member Since: 18 Oct 2008
Location: Louth
Posts: 575

Ireland 2005 Discovery 3 TDV6 SE Manual Zermatt SilverDiscovery 3

bellautos wrote:
Ive just removed the plug from one of mine..........

But i think you can play with your tool no problem by the looks of it.


Pete




Groan Whistle

Nearly as badas the 12" DG had back in '91

Rolling with laughter Rolling with laughter Rolling with laughter


Mental note: must not drink and surf.....must not drink and surf........must not drink and surf Nine-tenths of wisdom is being wise in time.

Also appears 9/10 of stopping is stopping in time

http://www.youtube.com/profile?user=DiscoReaper&view=videos  
Post #4310681st Mar 2009 7:21 pm
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bellautos
 


Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532

United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

I must admit it was a bit of a silly comment after reading it back lol.


Mental note: dont play with your tool on a open forum lol


Regards Pete  
Post #4310721st Mar 2009 7:29 pm
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GraemeS
 


Member Since: 17 Mar 2008
Location: NSW
Posts: 706

Australia 2010 Discovery 4 3.0 TDV6 SE Auto Nara BronzeDiscovery 4

wiggs wrote:
Thanks Pete .

I have just removed the grey 6 pin plug of the one nearest the aux battery tray .Started the car ..no difference.
Started and stopped the car 6 times ..still all normal .No Mil lamp on Shocked

Drove round the block (about a mile ) no diffrence to normal driving ..still no fault lights ..very strange

I understood that only MY07 and later show the check engine light for a faulty EGR valve. Those with DPFs might object more strongly, although the EGR valve is kept closed when overfuelling to cleanout the DPF.  
Post #4311571st Mar 2009 8:46 pm
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bellautos
 


Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532

United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

You are correct with the 7A> but the rest should flag a fault with open circuit as a perminant fault.  
Post #4311761st Mar 2009 9:06 pm
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GraemeS
 


Member Since: 17 Mar 2008
Location: NSW
Posts: 706

Australia 2010 Discovery 4 3.0 TDV6 SE Auto Nara BronzeDiscovery 4

I accept that there's no getting away from a fault being logged, but on the 7A onwards will the check engine light go off when the valves are reconnected, and is any sort of limp mode/reduced performance enforced whilst disconnected on these later models? I don't want to have to wait for the next service to have normal power re-instated nor to have the light still on at that service. I dislike with a vengence what EGR does to an engine and have always disabled it as soon as I've discovered how to do so.  
Post #4312401st Mar 2009 10:27 pm
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bellautos
 


Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532

United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

Im unsure on the MY07 cars, ive not ever tested this.
If i had ne available id test for you no problems.

Im working on making EGR emulators for the later cars so that they can be disconnected and replaced with a emulator to stop the faults.
But as above its time and the lack of components thats holding me back.

Pete  
Post #4312531st Mar 2009 10:55 pm
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GraemeS
 


Member Since: 17 Mar 2008
Location: NSW
Posts: 706

Australia 2010 Discovery 4 3.0 TDV6 SE Auto Nara BronzeDiscovery 4

Thanks Pete. That emulator idea sounds promising.  
Post #4312862nd Mar 2009 1:51 am
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DiskoStew
 


Member Since: 15 Apr 2013
Location: Location: Location:
Posts: 650

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3
Apologies for ancient thread revival...

... Is there any consensus on whether to disconnect the valves once they have been blanked on pre-MY07 models?
I ask because when I mentioned blanking to JSF 4x4 in Manningtree I was advised to disconnect the grey plugs afterwards as they seen one or two blanked vehicles that had issues because they hadn't been unplugged.  
Post #127232819th Apr 2014 9:20 pm
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bellautos
 


Member Since: 02 Feb 2006
Location: NorthYorkshire
Posts: 2532

United Kingdom 2010 Discovery 4 3.0 TDV6 SE Auto Santorini BlackDiscovery 4

No plug removal is needed on the pre 07 cars, their are many many without problems with plugs still connected including my wife's for the last 4 or 5 years without issue.

Regards Pete.  
Post #127233719th Apr 2014 9:32 pm
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DiskoStew
 


Member Since: 15 Apr 2013
Location: Location: Location:
Posts: 650

United Kingdom 2005 Discovery 3 TDV6 SE Manual Zambezi SilverDiscovery 3

Thanks Pete. Is it also true to say that there are no known issues with unplugging them anyway though?

Cheers,

Darren  
Post #127238220th Apr 2014 7:36 am
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Disco_Mikey
 


Member Since: 29 May 2007
Location: Dundee, Scotland
Posts: 20836

Scotland 2005 Discovery 3 TDV6 HSE Auto Cairns BlueDiscovery 3

My valves have been unplugged for 12 months now, with no issues Thumbs Up My D3 Build Thread

TDV8 Retrofit Build Thread  
Post #127238920th Apr 2014 7:56 am
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