 | Home > Puma (Tdci) > Does an EGR still clean when switched off?? |
 
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558  
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could you unplug it without problems like engine light coming on ? , if it's been programmed out anyway
really need to ask who ever the map is done by |
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1st Jun 2014 9:08pm |
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| carrotbay Member Since: 18 Aug 2013 Location: Northants, UK Posts: 702  
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I was thinking the same recently. Mine was disabled in the remap by BAS however still goes through a clean cycle. 2008 Defender 110 XS SW - M57N2 / 6HP28X
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1st Jun 2014 9:51pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
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I would say it shouldn't do cleaning cycle
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1st Jun 2014 10:03pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20613
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It should't do a cleaning cycle whilst running, not in my view anyway.
Cleaning whilst running or associated noises are usually when it's about to start playing up. If it's closed it should be in-active anyway. *Edited for spelling. Last edited by custom90 on 1st Jun 2014 11:52pm. Edited 1 time in total |
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1st Jun 2014 10:44pm |
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| Cheshire110 Member Since: 26 Jul 2013 Location: Cheshire/London Posts: 2769
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had mine remapped and 'turned off' - still does the chucka chuck chuck on turn-off. Cheers, David
Land Rovers of all shapes S3 onwards… Daily is a 110 V8. |
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1st Jun 2014 10:52pm |
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| Rakthi Member Since: 30 Nov 2012 Location: Where the cats are Posts: 200 
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I got Bas remap, EGR switched off and no chuck chucka etc
The Ultragauge also shows it inactive so am sure mine is closed. |
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2nd Jun 2014 1:09am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17600 
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I have a BAS remap with the EGR disabled (2007 2.4) and it does not self clean.
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2nd Jun 2014 8:07am |
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| Porny Site Sponsor Member Since: 31 Aug 2009 Location: Sutton Coldfield - West Midlands Posts: 809 
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EGR control and cleaning cycle are two different things....
I for one always leave the cleaning cycle in place in my calibrations - because it should be there. But stop EGR flow when engine running. As far as I was aware every other 'tuner' always completely removed all the EGR function including turning off the cleaning cycle... hrrmm... interesting if this has changed. Wonder where they got that from. In my opinion turning off the cleaning cycle is wrong - for numerous reasons - unless the valve is being removed. With the cleaning cycle turned off, the valve will get sooted up with carbon deposits - which will result in the EGR valve becoming unseated - leading to uncontrolled EGR flow. This picture shows the inlet section/MAP from a vehicle modified by 'another tuner'. The EGR functions were all turned off - yet this is state of the inlet section. 
And whilst the way that most other tuners disable EGR would mask any DTC's - this is also wrong - as uncontrolled EGR bleed not only effects the way the vehicle drives - but will also lead to increased bore wear (and a knackered engine). Even with a standard vehicle, the EGR valve has issues and you can actually get valve lift even when the calibration has EGR function/flow disabled. This is where one of the issues occurs... the valve lift allows and allows soot deposit/build up around the EGR valve - meaning that it can not shut properly - which leads to uncontrolled EGR flow - which is bad. And as mentioned, because of the way that some tuners probably disable the EGR - they will also 'mask' the DTC - where as if the DTC was still active, a fault code and MIL would be logged. There is also a big problem when people but the calibration back to standard... if the EGR has been turned off and masked with no cleaning cylce - I have found that 75% of Defenders then show EGR faults as it is now jammed... as the load is too high to complete a cleaning cycle. On stripping the intake down - these vehicles also show massive uncontrolled EGR flow with sooted up MAP sensors. For this reason I now offer the option of EGR blanking kits - or even a Full EGR removal (physical component changes) on any tuned vehicle to stop any flow caused from valve lift. In my opinion... EGR flow should be stopped (so EGR volume flow is 0 regardless of speed/load) - but cleaning left on. Going back to the original posters thread.... The cleaning cycle on occurs when the ignition is turned off (and certain criteria is met) - it does not occur whilst driving. In my opinion, what you heard is a EGR valve that has failed - by the sounds of, your EGR valve has been lifting and not the valve can not seat properly (as EGR clean as been turned off - and thus its not sooted up). You were getting the noise because the engine calibration is demanding 0% flow - and thus the valve to be in a closed position - but because of the soot it can not get there. So it working overtime - hence the noise. Ian IRB The home of the first modified Keswick Green 90 - and the first 2.4 Puma through both the 200bhp and 550Nm barriers. www.IRBdevelopments.com www.facebook.com/irbdevelopments www.integrated316.com www.facebook.com/integrated316 |
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3rd Jun 2014 2:08pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6318 
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Very interesting. David I presume you have a recent remap compared to the other maps mentioned? |
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3rd Jun 2014 7:09pm |
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| Yorkshire90 Member Since: 22 Sep 2011 Location: West Yorkshire Posts: 193
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Welcome... to IRB's performance tuning school of doing things right*  
*name subject to change  "Big green" 2000 Td5 90 IRB Developments modified (2004-2011)
Discovery 3 TDv6 GS Auto 2011-2012 *Missed the Defender too much* IRB Developments rebuild: Project Ice cube 2012-...... http://www.defender2.net/forum/topic11056.html |
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4th Jun 2014 9:42pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
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programme out the egr and clean cycle then fit a blank then you cant get a buildup of cr@p in it and you know its not stuck or leaking cr@p in to manifold
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9th Jun 2014 4:05pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20613
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I thought after a re-map the EGR was supposed to be blanked off anyway?
Either that or if it's shut it should stay shut. I just keep standard tune on mine, can't be bothered messing about with all this. |
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9th Jun 2014 4:47pm |
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| munch90 Member Since: 26 Oct 2013 Location: guildford Posts: 3558
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yes should stay shut , but as long as it was in good condition when re mapped and not leaking
only 10 mins to fit a 100% blanking plate just to make sure also the bit that gets clogged up is still open to the exhaust gases that's why some say leave cleaning cycle on , fitting a blank on the cooler side stops any cr@p getting to the egr valve it all if you ever take a inlet manifold off and see the muck going through your engine then you would want it blocked off ive seen manifolds with ports you could just fit your finger in with a 1/4 inch or more ring of oily carbon in all from egr |
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9th Jun 2014 5:00pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20613
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This is the reason why I recommend to people if they really hate the EGR that if they have problems with it. (Hence the complaint)
That they need to get a new EGR and then map it, not just try and get it mapped with a possible faulty EGR. |
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9th Jun 2014 5:09pm |
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