 | Home > Puma (Tdci) > EGR options |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17382   
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Mine's been 'mapped out' as you put it for the last five years and 120,000 miles.
One of the best upgrades I have made, absolutely no downside whatsoever.  |
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25th Feb 2015 9:08am |
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| Snowy90 Member Since: 23 Feb 2015 Location: Surrey Posts: 482 
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Hey Jonno,
What were your symptoms leading you to want to ditch the EGR system? I bought a blanking plate with a small hole in it that supposed to get around the engine management fault light?? from that web based auction site but haven't got round to fitting it no idea if it works. Thanks Chris |
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25th Feb 2015 9:17am |
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| TDCi Guy Member Since: 17 Aug 2014 Location: Yorkshire Posts: 286 
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I've blanked mine with a plate (no hole) as I was getting kangarooing at low speed, for example in motorway traffic.
I haven't had one instance since blanking the EGR. It has put my MIL light on but I can cope with that until I get a remap. Tom @tditomprice 100” Defender Hybrid 2010 Alaska White 90 HT |
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25th Feb 2015 9:26am |
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| Jonno Member Since: 06 Mar 2012 Location: Yorkshire Posts: 234 
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Mine has been getting progressively noiser over the last year, 12 months ago it just sounded bad after starting and stopping the car after a short run with the engine still cold. This has progressed to always sounding bad. It now makes a very loud clacking noise, as though the mechanism isn't seating properly. Overall I'd say it's goosed 
Jonno |
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25th Feb 2015 9:32am |
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| x-isle Member Since: 26 May 2011 Location: Midlands Posts: 1327  
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Here we go again........
Cue up the heated debate 
I changed mine about 2 years ago and lately I've been getting a flat spot at 2000rpm which is usually a pointer that the EGR is getting sooted up. However, I'd not driven the truck for about 3 months, and the flat spot has now gone away. I think it might have just needed a clear out. It if plays up again, then I'll remove and clean it. I'm not looking to remove/disable it permanently. I can't vote, as there isn't an answer relevant. Mine has not failed yet, but could do with a clean out. Craig Rogers 2007 Puma 110 XS 2011 Evoque Coupe Dynamic Lux www.craigrogers.photography |
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25th Feb 2015 9:42am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20371
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The EGR is a common cause of poor running and performance.
Cannot be good at all for the engine or components. |
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25th Feb 2015 10:07am |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5816  
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I have to say I had to Google EGR. So, Just a quick question. I have noticed Kangarooing in traffic as well, plus clacking noises etc. I thought it was my clutch (which I am sure is on the way out at 90k Kms). But should I be considering doing the EGR as well? Is this an automatic choice and does this relate to a 2.2 as well? Any help, very much appreciated. FYI, I am replacing the clutch etc in Spring.... Monsieur Le Grenadier
I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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25th Feb 2015 10:20am |
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| Jonno Member Since: 06 Mar 2012 Location: Yorkshire Posts: 234
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Mine must be not quite that far gone as I don't have any kangarooing as such, it does maybe sometimes hesitate / have a flat spot around 2000 rpm though. The main sympton is the Chucka chucka chucka self clean noise sounds more like a strangled goose when the engine is cold and has started "clacking" as though the valve is obstructed. It would be interesting to see when the EGR is supposed to operate, it might help people pin down certain running problems. I dare say there are no pre set definate situations though. It is probably derived from rpm, temperature, throttle position, boost etc and varies. Jonno |
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25th Feb 2015 10:34am |
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| TDCi Guy Member Since: 17 Aug 2014 Location: Yorkshire Posts: 286
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I hadn't had any other issues than the kangarooing. The 'chukka' noise was/is the same as any other puma I've seen so I'm not sure if mine is on the way out or if that is normal behaviour at low revs, I've certainly seen people in other threads with the same symptoms.
IIRC the egr is only open at low revs not sure at what RPM it is supposed to be closed though. Tom @tditomprice 100” Defender Hybrid 2010 Alaska White 90 HT |
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25th Feb 2015 11:45am |
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| TDCi Guy Member Since: 17 Aug 2014 Location: Yorkshire Posts: 286
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Grenadier, I'd definitely recommend getting an EGR blanking plate from ebay. It's only 3 and will confirm your suspicions about the kangarooing as it did with me. If you can live with the MIL light being on and the clacking noise then you don't have to go any further than that. If they get annoying then get it 'mapped out'. Removal and cleaning of the EGR might reduce the clacking, I think it is also possible to get the cleaning sequence 'mapped out' but I read that it wasn't recommended by the tuners. Tom @tditomprice 100” Defender Hybrid 2010 Alaska White 90 HT |
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25th Feb 2015 11:56am |
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| x-isle Member Since: 26 May 2011 Location: Midlands Posts: 1327
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[quote="Jonno"]
As far as I know, the EGR is closed at idle and open unless there is full throttle where it closes again. It may also have variable opening, but not sure, a tuner might be able to explain further. Basically, the idea of the EGR is to try and get the burn to be cooler by feeding Co2 fumes back into the chambers which cool them down resulting in the burn having less NOx (Nitrogen Oxide and Dioxide) which is the gas that causes Smog. The reason that the flat spot at 2,000rpm is happening and only notice it on acceleration is a hesitation of the valve closing which is adjusting the mixture and giving the flatspot. Whilst the EGR is not the greatest design, it's use in principle is great as it helps cut down smog. The Defender already chucks out a high amount of Co2 so I'm happy to run the EGR to keep the NOx down. It's just part of my (self) service schedule to remove, clean and re-install. How often? It seems (for me) about every 2 years. I get that for some who do a lot of mileage (probably a lot of motorway milegage) that it's going to get clogged up much sooner than me who only does around 4,000 miles a year. I also get that for some people, they don't have the tools/ability to service it themselves. So I get that some want to remove/disable it, but it does mean throwing out a lot more NOx. I don't know the legality of removing/disabling it. Some say it's illegal, others say not, it's not really clear. It's not part of an MOT, but that doesn't mean it's not a legal requirement to have it. I'm pretty certain it's a legal requirement to get it's Euro Emissions classification, so suspect that removal/disabling is probably illegal. Craig Rogers 2007 Puma 110 XS 2011 Evoque Coupe Dynamic Lux www.craigrogers.photography |
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25th Feb 2015 12:14pm |
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| Grenadier Member Since: 23 Jul 2014 Location: The foot of Mont Blanc... Posts: 5816
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Thanks Tom, I'll buy one and get it fitted. No issue with the light, the drive is more important. Looking to get a Re-Map later this year as well, so all in all, clutch/egr/map, I hope it will make for a much better drive. I am considering, at the same time as the clutch, to get a RedBooster servo fitted as well. Monsieur Le Grenadier I've not been everywhere, but it's on my list..... 2011 Puma 110DC - Corris Grey |
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25th Feb 2015 1:44pm |
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| x-isle Member Since: 26 May 2011 Location: Midlands Posts: 1327
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Hmmm, with the Engine light on and the ECU knowing that it's fueling system is not correct, could it switch to a "default" that would make the fueling less (or even more) than efficient?
I only say this as back in my Mini racing days (1.3 SPi ECU which had to be a standard map), we used to disconnect the water temp sensor which forced the ECU to slightly overfuel as a default to compensate for the fact that it didn't know what temperature the engine was. Craig Rogers 2007 Puma 110 XS 2011 Evoque Coupe Dynamic Lux www.craigrogers.photography |
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25th Feb 2015 1:49pm |
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| Marius Member Since: 21 Dec 2010 Location: South Africa Posts: 231  
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I mapped it out. Should have done that map years ago
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26th Feb 2015 4:42am |
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