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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
Heavy shaking with remap and EGR out - Puma 2.4
A couple of weeks ago, I did a remap and an EGR desactivation software-based

The moment I left the tuning company, and was rolling out with gear activated (for example in third gear but non touching the accelaration pedal), the puma 2.4 starts shaking forwards - backwards - ... like you should say, the engine gets diesel in pulses. It happens most of the time under the 1600 RPM, sometimes hard sometimes less.
Back to the tuning company to do a reset and a remap.. again the same problem
Then the guy activated the EGR again but doesn't touch the remap and away problem
Accelaration and power OK but little less then with EGR out. Me not happy, you know
So he deactivated again the EGR software based, BAM again hard shaking when rolling out in gear...

You feel when the shaking occurs, something inside me says that is not good for engine and axes, so he puts the EGR on again.

EDIT: Meanwhile some days further I blanked the EGR completely with a plate because we thought the shaking was caused by a not full closing EGR and went again to the tuning company to deactivated the EGR
After that, the shaking was still there... sigh...

Probably are there other things that happen in the software based procedure
The other strange thing is that the guy already did tons of defenders like TD5, puma's and never had this issue before... AND he doesn't find a solution Evil or Very Mad

So, is there anyone here that had the same issue and know the solution?

Last edited by DEF110DCPU on 3rd May 2017 8:01pm. Edited 1 time in total
Post #621423 3rd May 2017 7:36pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6298
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
are you saying after putting a blank on the egr it's now ok?

was the egr dirty and therefore not able to fully shut by the software only but the remap was assuming it was fully closed. now you have a blank in place the remap is getting the right 'signals' and working correctly?
Post #621432 3rd May 2017 7:52pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
sorry forgot something to tell... Embarassed
even with the blanking plate between and the EGR out software based, the shaking is still there... we also thought it was the EGR that not closes completely.
so he activates again the EGR and I'm driving now with the blanking kit and EGR unplugged but that's not the solution.
EDITED the original text now

Last edited by DEF110DCPU on 3rd May 2017 8:03pm. Edited 1 time in total
Post #621435 3rd May 2017 7:56pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359
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It is possible that without a physical blank that the EGR could be stuck open but disabled. But there should be DTC's that should be flagged and noted first, before flashing the map. That may explain why you are having these EGR related issues. One of the many reasons a blank is always recommended just in case. $W33T $0U7H3RN $UG4R
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Post #621439 3rd May 2017 8:01pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359
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Also, with the EGR unplugged are you getting any MIL / amber dash light? $W33T $0U7H3RN $UG4R
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Post #621440 3rd May 2017 8:02pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
yes i get the MIL light burning now but with OBD2 device I can erase the faults

so about the DTC's: what you are saying is, that when the ECU has some DTCs before the remap and you don't erase them initialy, they still are active after the remap and can cause this even with a blanking plate?
Post #621444 3rd May 2017 8:09pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359
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Possibly, what I was meaning was before the map was loaded the ECU should be checked for DTC's and taken note of.
This would give details of any DTC's if present, if there is none present no issues.
(I think DTC's should all be cleared before remapping, but don't quote me on it.)

I'm not sure exactly of the full procedure, but was the EGR disabled in the map?
There are functions I believe that the EGR can be left operational, EGR shut but cleaning cycle operational or as mine is completely disabled.
Have you checked your general wiring of the EGR plug, MAP sensor, MAF sensor?
It has been known the wiring can be chafed, cracked cable sheath or damaged.

Also, EGR aside, MAF & MAP sensors could possibly need cleaning. These can have a dramatic effect on the performance.
The new map may bring this on as the performance is increased all the sensors need to be in top knick and clean.

That is a few ideas at least, and hopefully the tuner in question should be reputable and they should be sorting it out with you and for you. $W33T $0U7H3RN $UG4R
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Post #621463 3rd May 2017 8:44pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
custom90steve wrote:
I'm not sure exactly of the full procedure, but was the EGR disabled in the map?
There are functions I believe that the EGR can be left operational, EGR shut but cleaning cycle operational or as mine is completely disabled.
Have you checked your general wiring of the EGR plug, MAP sensor, MAF sensor?
It has been known the wiring can be chafed, cracked cable sheath or damaged.


okay, the EGR was completely disabled with the software
like you advice, i also think there is something wrong with the MAP or MAF sensor.
i checked the MAP... clean as new
the MAF was very dirty so cleaned it but the shaking still occurs

the wiring of both sensors looking good

any idea about the values of the MAF sensor at idle and driving?
Post #621542 4th May 2017 6:15am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359
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I'm afraid that is a bit out of my scope of knowledge. However, there are members here which hopefully can assist you on that. VCV maybe a possibly too, but it's hard to see how. Normally it's no issue at all. With mine it was a breeze. Is there any possibility the is an error present in the map? $W33T $0U7H3RN $UG4R
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Post #621636 4th May 2017 2:01pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
okay, i haven't checked the VCV yet

one more thing I can say, when I start the engine with EGR out (software based) then the engine remarkable "rattles" much louder at idle and even when you drive you hear it

this issue can let us explain the solution maybe?

in another post you can also read that my exhaust stinks very much, even untenable when parking in garage...

is this a VCV defect symptom?
Post #621693 4th May 2017 6:12pm
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Fabio



Member Since: 05 Aug 2011
Location: Somerset
Posts: 589
Portugal 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
At what speeds does it do that?
mine does ti at 40 or 50mph in 6th.
and it has nothing to do with the VCV.

Fabio
Post #621941 5th May 2017 3:58pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
Fabio wrote:
At what speeds does it do that?
mine does ti at 40 or 50mph in 6th.
and it has nothing to do with the VCV.


with mine, nothing to do with speed - the moment, the car is rolling out with gear engaged, no gaz, it starts shaking back and forth, back and forth
also it rattles loud at idling when EGR is out software based.
Post #621943 5th May 2017 4:02pm
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Fabio



Member Since: 05 Aug 2011
Location: Somerset
Posts: 589
Portugal 2011 Defender 110 Puma 2.4 XS CSW Santorini Black
Ah ok then.
It is different to what mine does. If it were the same symptoms as mine i would have said that is normal...
Sorry i don't know what it could be.
Good luck with the repair and keep us updated.

Fabio
Post #621944 5th May 2017 4:10pm
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DEF110DCPU



Member Since: 06 Aug 2008
Location: ODK
Posts: 18
Belgium 2008 Defender 110 Puma 2.4 DCPU Stornoway Grey
okay found the problem
seems that the software from the ECU had not the last updates installed
normally dealers do this when going on maintenance

updated to last version now and shaking is gone
Post #654866 4th Oct 2017 1:26pm
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