Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "General Topics" > General Volvo and Motoring Discussions

Notices

General Volvo and Motoring Discussions This forum is for messages of a general nature about Volvos that are not covered by other forums and other motoring related matters of interest. Users will need to register to post/reply.

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

EGR - Death to it.

Views : 2246

Replies : 29

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jul 29th, 2021, 15:29   #11
monkeh
Pain in the backside
 
monkeh's Avatar
 

Last Online: Yesterday 00:07
Join Date: Mar 2007
Location: Newport
Default

Quote:
Originally Posted by Zebster View Post
You could have simply fixed the allegedly failed EGR valve. Disabling the EGR flow in the manner described would not have improved the particulate emissions. NOx control and particulate control are separate issues with independent mitigations.

In fact I would suggest that the DPF is clearly not doing its job.


But you don't have a readout of the NOx emissions. Again you appear to be confusing NOx and particulate emissions.


It passed only because NOx emissions are not tested during the MoT. Nevertheless disabling vehicle emission control systems should result in a fail, as the vehicle is now illegal to use on UK roads. If the MoT tester had spotted that an emission system had been disabled (e.g. a visible blanking plate on the EGR valve) then a fail should have been given and the vehicle reported to VOSA. And again you have confused particulate emissions and NOx emissions...
Long and short, I understand particulate and nox are separate.
I also understand that egr tampering via blanking is a fail, hence electronic mapping.
If you had seen the condition of the inlet manifold, egr mixer, swirl flaps and inlet ports to the combustion chamber, you would've had some idea that "complete combustion" would never have been achieved. The airflow in the egr mixer was constricted to roughly 1.5 inches, not its full bore of 3". The swirl flaps which were to aid combustion, improve torque, were not performing properly, all at fault of egr. Hence my reason why I decided to kill the egr. I want to get another 170k out of this d5. Going through its breathing system and remedying it's issues would bring it back to near "clean air" which I doubt a lot of pro diesel egr folk do not understand.
I am certain that all the gunk and goo would be severely increasing emissions of nox due to incomplete combustion.


When was the last time you cleaned your intake out? If you've done it a few times, I think you'll change your thoughts on that little valve and cooler.
__________________
'Designed by a computer, built by a robot, and driven by a f***ing nutter'
'09 XC70 SE - 2" lift, D5 225bhp, poverty spec.
monkeh is offline   Reply With Quote
The Following User Says Thank You to monkeh For This Useful Post:
Old Jul 29th, 2021, 15:36   #12
Familyman 90
The Brit Brick
 
Familyman 90's Avatar
 

Last Online: Aug 13th, 2023 10:39
Join Date: Jul 2021
Location: Warwickshire
Default

Increasing NOx emissions at least fivefold is hardly making it run cleaner.

And there's your strange claimed motivation behind this - the presence or absence of an EGR will have no bearing on engine longevity. Wear of critical components will not be influenced by an EGR.

If you can't afford to maintain or repair the car properly you should just say so instead of making up specious excuses to justify your actions.
__________________
2005 C70 2.4T Collection convertible. 40,000 mile sunny day toy.

Last edited by Familyman 90; Jul 29th, 2021 at 15:45.
Familyman 90 is offline   Reply With Quote
The Following 4 Users Say Thank You to Familyman 90 For This Useful Post:
Old Jul 29th, 2021, 15:45   #13
monkeh
Pain in the backside
 
monkeh's Avatar
 

Last Online: Yesterday 00:07
Join Date: Mar 2007
Location: Newport
Default

And as predicted the thread goes sideways... Its the reason why I gave up on this forum a long time ago. It used to be a nice place to be. But all I see are bitter and twisted folk who aren't able to hold a decent motorist conversation without quoting laws as if you've got the power of vosa.

My car, my choice. Far from "cheapskate thuggery", just understanding on what makes a vehicle run well and longer. If I get into trouble for disabling it, it's on me. Not for you to berate me. I was explaining my findings.
__________________
'Designed by a computer, built by a robot, and driven by a f***ing nutter'
'09 XC70 SE - 2" lift, D5 225bhp, poverty spec.
monkeh is offline   Reply With Quote
The Following 4 Users Say Thank You to monkeh For This Useful Post:
Old Jul 29th, 2021, 17:00   #14
Whippy
Premier Member
 
Whippy's Avatar
 

Last Online: Today 01:46
Join Date: Mar 2017
Location: Wessex
Default

And this is why ice vehicles are doomed, because even when the manufacturer tries to do something there's always a bodge. Always.
__________________
Non bowus drawi, non ridus horsi, non snoutus injecti!
Whippy is online now   Reply With Quote
The Following 4 Users Say Thank You to Whippy For This Useful Post:
Old Jul 29th, 2021, 17:21   #15
Zebster
Upstanding Member
 
Zebster's Avatar
 

Last Online: Sep 12th, 2023 12:29
Join Date: Mar 2018
Location: Ludlow
Default

Quote:
Originally Posted by monkeh View Post
And as predicted the thread goes sideways... Its the reason why I gave up on this forum a long time ago. It used to be a nice place to be. But all I see are bitter and twisted folk who aren't able to hold a decent motorist conversation without quoting laws as if you've got the power of vosa...
A nice place where you could discuss illegally disabling your environmental control systems? But somehow we're the bitter and twisted ones, LOL.

Shouldn't we be allowed to express an opinion about law-breaking and deliberately polluting?

Quote:
Originally Posted by monkeh View Post
...My car, my choice. Far from "cheapskate thuggery", just understanding on what makes a vehicle run well and longer. If I get into trouble for disabling it, it's on me. Not for you to berate me. I was explaining my findings.
It's not your choice though, is it? What you are doing by using the vehicle is illegal! Do you feel you have a similar right to drive around with bald tyres?

Your 'findings' are generally worthless, mostly because you don't seem to understand EGR flow and the significance in reducing NOx emissions. You should have just restored the EGR valve to a functional state, perhaps by merely cleaning it for free?
__________________
GONE: 2015 V60 D4 181 (VEA) R-Design Lux Nav manual in black
Zebster is offline   Reply With Quote
The Following 4 Users Say Thank You to Zebster For This Useful Post:
Old Jul 29th, 2021, 17:50   #16
Whippy
Premier Member
 
Whippy's Avatar
 

Last Online: Today 01:46
Join Date: Mar 2017
Location: Wessex
Default

Quote:
Originally Posted by Zebster View Post
A nice place where you could discuss illegally disabling your environmental control systems? But somehow we're the bitter and twisted ones, LOL.

Shouldn't we be allowed to express an opinion about law-breaking and deliberately polluting?


It's not your choice though, is it? What you are doing by using the vehicle is illegal! Do you feel you have a similar right to drive around with bald tyres?

Your 'findings' are generally worthless, mostly because you don't seem to understand EGR flow and the significance in reducing NOx emissions. You should have just restored the EGR valve to a functional state, perhaps by merely cleaning it for free?
Let him get on with it, if he doesn't understand so be it, puzzled me whether he was looking for applause.
__________________
Non bowus drawi, non ridus horsi, non snoutus injecti!
Whippy is online now   Reply With Quote
The Following User Says Thank You to Whippy For This Useful Post:
Old Jul 29th, 2021, 22:22   #17
Bendolfc
Premier Member
 

Last Online: Mar 21st, 2024 09:37
Join Date: May 2010
Location: Liverpool
Default

Crack on. We can all put up with lower speed limits whilst people insist on doing this.

https://highwaysengland.co.uk/our-wo...-limit-trials/
Bendolfc is offline   Reply With Quote
The Following 4 Users Say Thank You to Bendolfc For This Useful Post:
Old Jul 29th, 2021, 23:55   #18
Familyman 90
The Brit Brick
 
Familyman 90's Avatar
 

Last Online: Aug 13th, 2023 10:39
Join Date: Jul 2021
Location: Warwickshire
Default

The sale of new ICE cars ceases in 2030, and people pulling this sort of stunt will get the existing ones outlawed off the road as well.

There is no coherent technical, moral or legal argument in favour of what you have done.
__________________
2005 C70 2.4T Collection convertible. 40,000 mile sunny day toy.
Familyman 90 is offline   Reply With Quote
The Following 3 Users Say Thank You to Familyman 90 For This Useful Post:
Old Jul 30th, 2021, 17:27   #19
cheshired5
Premier Member
 

Last Online: Dec 26th, 2021 14:42
Join Date: Dec 2013
Location: Crewe
Default

Quote:
Originally Posted by monkeh View Post
the reason why I gave up on this forum a long time ago.
You'll never be given any credit from some on here for keeping an older vehicle running.
Personally, I'd have kept the freshly cleaned EGR as standard but I'll never judge anyone who is ultimately preventing an older car having to be recycled.

A lot of people's idea of being environmentally aware is to have a new lower emissions car built for them every few years whilst ignoring the environmental implications of producing said car.

In the 9 years I've had my one, very well maintained old car, some people have had 3 or more cars built for them yet think they are the epitome of green.

Most don't even own their cars so are in a cycle guaranteed to be adding yet another newly produced vehicle to replace a perfectly usable car in a couple of years.
Their green delusion would be funny if it wasn't so harmful.
__________________
2002 S60 SE D5 Manual
209000 miles
cheshired5 is offline   Reply With Quote
The Following 8 Users Say Thank You to cheshired5 For This Useful Post:
Old Jul 30th, 2021, 18:02   #20
Tannaton
Bungling Amateur
 
Tannaton's Avatar
 

Last Online: Today 01:22
Join Date: Aug 2014
Location: Beverley, East Yorks
Default

Quote:
Originally Posted by Zebster View Post
It wasn't a 'tweak'. It was a disablement.

Disabling vehicle emission control systems is illegal so no, it shouldn't be mentioned. At best, disabling the EGR and/or gutting the DPF is cheapskate bodgery to save a few quid by owners who can't properly afford to maintain their car, at worst it's environmental thuggery with little real benefit for the vehicle owner.

In this case it would have been better to have simply cleaned the possibly sticky EGR valve, something I did to my previous Honda for free.
^^^^ That.

In the past, before I grew a conscience and reached puberty, I have disabled EGR on a number of cars. On some old 1990's Land Rovers it used to make a slight difference to response and economy. But on any Volvo engine (D5 and 2.0D) I've tried it it makes no difference at all.

EGR and DPF systems on Volvo cars (excluding perhaps the 1.6 PSA engines and wet DPF) are a very good design and on an otherwise healthy engine - don't give trouble, and have no impact on how quickly the oil gets contaminated with dirt.

Whether you agree with the tightening of emissions controls on cars or not, many of the localised controls (clean air zones in London, Birmingham etc.) are a direct response to high levels of NOx emissions measured at the roadside from diesel vehicles. It's quite possible that if owners maintained their cars and didn't make illegal modifications, owners of Euro 5 vehicles wouldn't have to pay eight quid to get to work in Birmingham now.

As others have said I also have a personal opinion that the OP doesn't fully understand what he is doing, the EGR valve would not be operational in a fast acceleration run as part of an emissions test on an MOT, so disabling EGR should not impact that part of the test - it is the presence or interreference with the EGR system which is examined. So don't congratulate yourself thinking you've done the world a favour - you haven't - you've done yourself a favour at everyone else's expense.
__________________
2011 XC90 D5 Executive
2003 C70 T5 GT
2012 Ford Ranger XL SC
1977 Triumph Spitfire 1500
1976 Massey Ferguson 135

Last edited by Tannaton; Jul 30th, 2021 at 18:17.
Tannaton is online now   Reply With Quote
The Following 3 Users Say Thank You to Tannaton For This Useful Post:
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 01:47.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.