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Throttle valve EGR
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ni46
 


Member Since: 22 Jul 2012
Location: staffs
Posts: 28

United Kingdom 2005 Discovery 3 TDV6 SE Auto Bonatti GreyDiscovery 3
Throttle valve EGR

I know that there are plenty of posts on this subject but I remain uncertain.
I have fitted EGR blanking and removed the butterfly throttle valve as recommended. I do not think there was a problem with the valves but it seemed a good precaution as they were bound to fail sooner or later. and being a 2005 model there was no software issue.
Now I feel that engine breaking is poor, I cannot make up my mind if it is much worse than before so 2 questions.

1 Is the valve actually driven closed on over run to aid engine breaking.

2 Has anyone else noticed this or is my imagination taking control.

I may try to put the valve back in but I do not have time at the moment particularly if it will have no effect.

Thanks  
Post #112350126th Jun 2013 8:27 pm
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CUCO
 


Member Since: 26 May 2011
Location: Spain & Oleee!!!
Posts: 609

Spain 2010 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Reinstall the butterfly, vacuum created closing the intake improves the braking capability.

(And aids in an overrun situation)  
Post #112355226th Jun 2013 9:36 pm
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Splitpin
 


Member Since: 30 Dec 2010
Location: At the toolbox
Posts: 535

CUCO wrote:
Reinstall the butterfly, vacuum created closing the intake improves the braking capability.

(And aids in an overrun situation)


This is correct  
Post #112356526th Jun 2013 9:57 pm
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cornishboy
 


Member Since: 09 Oct 2008
Location: Bristol
Posts: 649

United Kingdom 2012 Discovery 4 3.0 SDV6 HSE Auto Santorini BlackDiscovery 4

Can some give a more technical view on this one?

With EGR's blanked.........If you re-install the butterfly flap (valve) and it closes because it thinks the air is coming from the EGR valves, this would surely cause power issues? as no air would be getting to the fuel mixture?????  
Post #112395027th Jun 2013 6:52 pm
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