 | Home > Puma (Tdci) > Puma 2.2 EGR activation |
 
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| shropshiredefender Member Since: 05 Jun 2017 Location: Shropshire Posts: 834   
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Welcome
Can't help with the Draper tool, but after about a year of ownership, and no strange noises after turning it off, my 2.4 suddenly made alarming "Chugga, Chugga, Chugga sounds immediately after turning the engine off. I discovered that this was the EGR going into self cleaning mode. BAS EGR delete patch https://bellautoservices.co.uk/store/puma-...-road-use/ coupled with a 165bhp tune solved the EGR problem  Just because you're offended doesn't mean you're right. |
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17th Feb 2021 1:46pm |
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| Nigelhirst Member Since: 17 Feb 2021 Location: Shropshire Posts: 3  
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Thanks for that!
Mine has always made the ‘chuga chuga’ self cleaning noise, but it has stopped. Probably because the valve is blocked up. To say there are ‘only’ 4 bolts to undo, it looks like a pig of a job to take off the old one...😱 Nigel |
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17th Feb 2021 2:16pm |
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| williamthedog Member Since: 29 Dec 2012 Location: south wales Posts: 3441 
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Why don't you have a remap and have it deleted at the same time?
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17th Feb 2021 2:53pm |
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| Nigelhirst Member Since: 17 Feb 2021 Location: Shropshire Posts: 3
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Yes I will probably do that.
I've answered my own question.. Pins 1 and 5 (pin 3 is absent) activate the valve. Just waiting to see how long the cleaning lasts before it sticks again. Nigel |
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17th Feb 2021 3:29pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2134
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I’ve done an egr valve replace on a 2.2, to be honest if you take it off have a new one to replace it, it’s a pierburg valve and you can get one for £100 inc the two gaskets , and that’s a gen OEM valve as used by ford and LR. Then see if you can clean up the old one, but to be honest once it has gone it’s unlikely it can be fixed and not worth the risk and going into limp mode a long way from home.
It’s fiddly but not technical, involves two bolts , two nuts and two studs, plus two cooling pipes and the electrical connector.. Need to get the heater diverter valve bracket out of the way and if you don’t have air con it’s easier. So £100 plus four hours first time diy on your drive, approx 2 hours second time as you have the knack and know the process. Alternatively 2 hours for an Indy to do if you provide part. Just worth costing against an egr delete and tune package. |
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17th Feb 2021 3:56pm |
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| Roy5695 Member Since: 15 Feb 2014 Location: Cornwall Posts: 1123 
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You can’t simply remap the EGR out of a 2.2. Unless you remove the DPF and remap that out too... 2011 Defender DCPU 2.2 - https://www.defender2.net/forum/topic30623.html
Instagram - @r22oyp Roy |
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17th Feb 2021 4:31pm |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2134
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^^^^^^^^
Just out of interest, what’s the interaction between the EGR and the DPF, I would have thought mapping the EGR out and closing it off would benefit the DPF as mixing exhaust gasses with air in the combustion generates more particulates for the DFP to deal with, so mapping it out and blanking it off would result in no exahaust gasses ever being mixed in combustion and therefore less particulates being created for the dpf to deal with. I expect the map would be more complex if there are signals going to the ECU, but would not have expected the DPF to need removal. Not saying it’s not true, just trying to understand why  |
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17th Feb 2021 6:21pm |
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| Roy5695 Member Since: 15 Feb 2014 Location: Cornwall Posts: 1123
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Quite the contrary, with the EGR in place, less particulates go through the DPF as some of them are burnt twice!
Blanking the EGR and leaving the DPF in place would increase the fill rate of said DPF (due to none being recycled) and cause premature filling, causing the DPF to either block or regenerate more often. The EGR also plays a role in the Regeneration process, something to do with the burn temperatures and being a safety device if things get a bit hot. 2011 Defender DCPU 2.2 - https://www.defender2.net/forum/topic30623.html Instagram - @r22oyp Roy |
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17th Feb 2021 8:56pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 431 
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Roy, I think the recirculated gasses cause lower temperature combustion in the cylinder to avoid NOx creation. So you're probably bang on with the EGR enabling control of regen temps.
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17th Feb 2021 9:24pm |
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| Julie Member Since: 07 Oct 2017 Location: Nantes Posts: 550  
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The DPF is in place since they modified thé combustion process (= lower temp = less NOx and more PM). I'd better leave it like it is (originally) since they are developping test procedures for the MOT Here in France, it changed in 2018 - now they measure if your DPF is functional (PM) And they've already announced a more sophisticated test to come - which includes EGR and the rest (NOx ; HCO etc.) They're gonna make us beg for electric cars |
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19th Feb 2021 7:53pm |
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