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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 8902

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

I never bother to return to the original map before a VCV recalibration and it has never caused any problems.

My EGR has been disabled for 7 years and returning to the factory map would probably be an expensive nightmare.

Post #616065 11th Apr 2017 2:28pm
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pannawonica



Member Since: 21 Nov 2010
Location: Clackline Western Australia
Posts: 568

Australia 

Thanks blackwolf I was concerned about that one as mine has been disabled for five years! Thumbs Up

Post #616254 12th Apr 2017 9:47am
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meeerrrk



Member Since: 12 Feb 2017
Location: Surrey
Posts: 535

United Kingdom 2010 Defender 90 Puma 2.4 HT Stornoway Grey

B4Lamb wrote:
meeerrrk wrote:
Did anyone order, receive and fit a valve from diesel parts online shop?


yes I did for my 2.4 Puma. All was good.


thanks - I will get one ordered My 90 Project : http://www.defender2.net/forum/topic52774.html

Post #659865 27th Oct 2017 10:46am
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meeerrrk



Member Since: 12 Feb 2017
Location: Surrey
Posts: 535

United Kingdom 2010 Defender 90 Puma 2.4 HT Stornoway Grey

Sorry, can I confirm this is correct for 2010 2.4TDCI

http://www.dieselpartsdirect.co.uk/suction...-kit_2.htm My 90 Project : http://www.defender2.net/forum/topic52774.html

Post #659866 27th Oct 2017 10:49am
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B4Lamb



Member Since: 21 Mar 2015
Location: Abergavenny, Wales
Posts: 129

Wales 2007 Defender 90 Puma 2.4 HT Galway Green

Yes mine was for a 2007 defender but all of the 2.4 TDCi puma engines will use the same valve "You are never to old to learn something new"

Post #659981 28th Oct 2017 6:20am
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meeerrrk



Member Since: 12 Feb 2017
Location: Surrey
Posts: 535

United Kingdom 2010 Defender 90 Puma 2.4 HT Stornoway Grey

Thanks, ordered and arrived already! My 90 Project : http://www.defender2.net/forum/topic52774.html

Post #660116 28th Oct 2017 7:13pm
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Simon.pl



Member Since: 15 Mar 2016
Location: Warsaw
Posts: 98

Poland 2007 Defender 110 Puma 2.4 HT Keswick Green

Do I understand correctly that without VCV working at all (let's say due to the VCV loom problem, like broken connector or cable) the engine wouldn't run at all?

Post #662466 7th Nov 2017 6:20pm
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B4Lamb



Member Since: 21 Mar 2015
Location: Abergavenny, Wales
Posts: 129

Wales 2007 Defender 90 Puma 2.4 HT Galway Green

If the control to the VCV is disconnected ie. A fault in the wiring loom the valve will open to full bore allowing fuel to flow from the low pressure inlet to the hp pump side because the internal piston is spring loaded to the open position (assuming it is not stuck shut ....unlikely). So if my understanding is correct it will allow the engine to run in this state but over fuelled so it won't run very well. My understanding is at low revs and low load the VCV is commanded towards closed to limit the fuel flow but I would need to check this theory with a test. "You are never to old to learn something new"

Post #662495 7th Nov 2017 8:22pm
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Simon.pl



Member Since: 15 Mar 2016
Location: Warsaw
Posts: 98

Poland 2007 Defender 110 Puma 2.4 HT Keswick Green

Thank you B4Lamb.
So my idea wouldn't work in such case - trying to find two circuits that could be cut off by an additional immobilizing system. Would like one that could shut the engine off remotely in case somebody "asked" me to leave a car with working engine Wink
Sorry for off-topic Thumbs Up

Post #662501 7th Nov 2017 8:42pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 8902

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

With the VCV disconnected and hence fixed in the fully open position it is highly likely that, if the vehicle is driven, the fuel rail will be over-pressurised causing the PRV to 'pop', necessitating a new PRV. It is only the VCV that regulates the common rail pressure.

I recommend you do not try running the engine with the VCV disconnected unless you like spending money!

Post #662533 7th Nov 2017 10:23pm
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B4Lamb



Member Since: 21 Mar 2015
Location: Abergavenny, Wales
Posts: 129

Wales 2007 Defender 90 Puma 2.4 HT Galway Green

I would hope that even Ford would not design something that would cause irreparable damage to a component due to a lose wire or connection to another engine component. I agree its would be risky to test this out but I'm sure someone can verify that the common rail pressure would definitely exceed the PRV setting if the VCV remains open either by deliberate action or due to a problem of control or electrical connection. "You are never to old to learn something new"

Post #665162 17th Nov 2017 7:15pm
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spudfan



Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 2371

Ireland 

Been chatting to an independent about changing mine. They have never had a Puma in for this but have done them on Freelanders. He said that they never had to do any "learning" on the Freelanders and all was well. Is it 100% necessary to do a "learning" process on the Puma after a VCV change? 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai

Post #701293 16th Apr 2018 4:50pm
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3125

United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey

They do run ok without the learn, but run a lot better when programmed,
basically the pump learn is a series of pressure tests of various components,
Injectors, fuel rail valve, fuel rail, and pump, this synchronises every component so it’s all working together.

I’ve not long replaced mine, (I’m on my 2nd) i ran it for a few days without doing a relearn, I had a very slight hunt on tickover, when I finally got around to plugging it in and re programming, it runs with no issues. Thumbs Up 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.

Post #701315 16th Apr 2018 5:54pm
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B4Lamb



Member Since: 21 Mar 2015
Location: Abergavenny, Wales
Posts: 129

Wales 2007 Defender 90 Puma 2.4 HT Galway Green

After changing my CVC I never had it calibrated. It seems to run fine but I guess I should get it done? Maybe I was lucky or I was so used to poor performance I didn't notice!! Maybe it will be a different animal should I get it calibrated but I will feel cheated if it makes sod all difference at all.

John "You are never to old to learn something new"

Post #701407 16th Apr 2018 10:04pm
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spudfan



Member Since: 10 Sep 2007
Location: Co Donegal
Posts: 2371

Ireland 

Thank you. He was honest enough to say that they had no experience of replacing Puma VCV's but he'd look into it . It's not the replacing but the learning. He said he'd have to depend on someone from outside coming in to do it.
Mine just does a surge after start up occasionally. I will keep this up to date with any progress just to add to the data base for others. Thanks again Thumbs Up 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali
2008 110 2.4 tdci csw-Zulu
2011 110 2.4 tdci csw-Masai

Post #701408 16th Apr 2018 10:08pm
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