Home > Puma (Tdci) > EGR valve, standard tune. |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637 |
Hmmm, what diesel are you using? Our diesel in S.Africa is only 50ppm.
It can't hurt -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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9th Jul 2012 3:16pm |
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Ninetenths Member Since: 26 Mar 2009 Location: Sarf Lundun Posts: 161 |
If your EGR valve is sticking it is possible to clear with a bit of brute force and ignorance ie whack it a few times with a hammer. Pimped black '07 Puma
Equally Pimped Black Pick up Truck Rollin deep |
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15th Jul 2012 7:02pm |
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Andrea Member Since: 02 Sep 2010 Location: South Africa Posts: 30 |
Hey naks,
Help me out here mate. what is this thing with the EGR closed?? I read this and don't know what's going on? As you know my 09 puma is out of warranty! What is the EGR? Why should one close it? Please excuse my ignorance! Andrea |
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18th Jul 2012 4:27pm |
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Andrea Member Since: 02 Sep 2010 Location: South Africa Posts: 30 |
Hey naks,
Help me out here mate. what is this thing with the EGR closed?? I read this and don't know what's going on? As you know my 09 puma is out of warranty! What is the EGR? Why should one close it? Please excuse my ignorance! Andrea |
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18th Jul 2012 4:29pm |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637 |
The EGR is basically a system where the exhaust gas is fed back into the engine to reduce combustion temperatures and thereby reducing harmful emissions. Some more info here: http://en.wikipedia.org/wiki/Exhaust_gas_recirculation However, it is bad because it increases fuel consumption and over time the intake manifold gets fouled up, EGR valve becomes clogged, etc. So it's generally a good idea to remove the EGR on a TDi. Unfortunately on the Puma the EGR is controlled by the ECU and if you remove/bypass it, the Engine Malfunction Light will come on and stay on. So the BAS/Alive remap basically tells the ECU to keep the EGR closed and the net result is that your engine runs cleaner and fuel consumption is bettered. IIRC, there is a russian fellow who has removed the EGR completely, search around for this thread, it may be worth considering. -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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19th Jul 2012 10:01am |
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Molusk Member Since: 20 Dec 2011 Location: Loire Valley Posts: 43 |
and what if we just unplug the EGR connector? MIL lights, OK, but does the engine still work fine with EGR disconnected? Is there any risk? Does the ECU fall into degraded mode?
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19th Jul 2012 11:11am |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637 |
Engine will work fine, in fact, it will run better. BUT if the MIL light is always on, when will you know if something really goes go wrong? -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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19th Jul 2012 11:17am |
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tatra805 Member Since: 16 Aug 2011 Location: Dolany Posts: 436 |
and dont forget that by pulling the EGR plug the ECU will calculate on average maps for fuel/air mixture as if the EGR is broken and has no influence.
While a lot of people reported less consumption with the EGR unplugged i am 2 liters/100km down since plugging it back in. (a lot of towing) I would only consider a software patch or a real "mechanical" solution that fools the ECU in believing all is functional. 2cents |
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19th Jul 2012 11:24am |
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Molusk Member Since: 20 Dec 2011 Location: Loire Valley Posts: 43 |
Good point. But for what kind of reason does the MIL occur? I guess when there is a deadly issue (oil pressure, water T°C) you'll have a another red light on the dashboard, am I wrong? So as long as the engine drives well, what is the matter with having the MIL ON? |
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23rd Jul 2012 8:43am |
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Molusk Member Since: 20 Dec 2011 Location: Loire Valley Posts: 43 |
You mean the ECM will take into account that EGR is out of order for its mixture management. Seems to be perfect, as it is the case indeed. What is wrong with that? |
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23rd Jul 2012 8:47am |
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Naks Member Since: 27 Jan 2009 Location: Stellenbosch, ZA Posts: 2637 |
Anything serious I would think?
I could be wrong, but I don't think there's any other light that comes on? In my case I have a Madman EMS, so if engine oil pressure/coolant level/coolant temp/EGT are abnormal, I have a backup alarm. It is a good idea to get one of these, since you can monitor real-time figures and not rely on the ECU's alarm.
Nothing -- 2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear 2015 Range Rover Sport V8 Supercharged Defender Puma Workshop Manual: https://bit.ly/2zZ1en9 Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ |
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23rd Jul 2012 8:51am |
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Andrea Member Since: 02 Sep 2010 Location: South Africa Posts: 30 |
Naks, thanks for the info!!!
This is something i havent heard of at all! Where do i find the EGR valve to unplug?? |
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27th Jul 2012 3:04pm |
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Marius Member Since: 21 Dec 2010 Location: South Africa Posts: 231 |
Reviving this post. I wana unplug my ERG and run it for a bit to see fuel consumption?
Any negatives appart from the warning light? Does this light (fault) clear itself once plugged back? |
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19th Feb 2014 12:55pm |
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gpauloj Member Since: 13 Dec 2014 Location: evian Posts: 4 |
hello, if i understand well, i can unplug my egr valve , i'll only get light on dashbord? but i hurd, after 3 times running engine, default stays in ECU and your engine run in downgraded mode, true?
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13th Dec 2014 2:10am |
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