 | Home > Puma (Tdci) > Volume Control Valve - Ford part no? |
 
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| pannawonica Member Since: 21 Nov 2010 Location: Clackline Western Australia Posts: 568  
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Thanks blackwolf I was concerned about that one as mine has been disabled for five years!
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12th Apr 2017 9:47am |
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| meeerrrk Member Since: 12 Feb 2017 Location: Surrey Posts: 548  
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thanks - I will get one ordered My 90 Project : http://www.defender2.net/forum/topic52774.html |
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27th Oct 2017 10:46am |
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| meeerrrk Member Since: 12 Feb 2017 Location: Surrey Posts: 548
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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 |
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27th Oct 2017 10:49am |
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| B4Lamb Member Since: 21 Mar 2015 Location: Abergavenny, Wales Posts: 233  
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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"
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28th Oct 2017 6:20am |
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| meeerrrk Member Since: 12 Feb 2017 Location: Surrey Posts: 548
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Thanks, ordered and arrived already! My 90 Project : http://www.defender2.net/forum/topic52774.html
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28th Oct 2017 7:13pm |
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| Simon.pl Member Since: 15 Mar 2016 Location: Warsaw Posts: 98  
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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?
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7th Nov 2017 6:20pm |
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| B4Lamb Member Since: 21 Mar 2015 Location: Abergavenny, Wales Posts: 233
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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"
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7th Nov 2017 8:22pm |
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| Simon.pl Member Since: 15 Mar 2016 Location: Warsaw Posts: 98
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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 
Sorry for off-topic |
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7th Nov 2017 8:42pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17344 
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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! |
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7th Nov 2017 10:23pm |
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| B4Lamb Member Since: 21 Mar 2015 Location: Abergavenny, Wales Posts: 233
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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"
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17th Nov 2017 7:15pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4646 
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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 |
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16th Apr 2018 4:50pm |
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| ian series 1 Member Since: 17 Nov 2014 Location: south Posts: 3127 
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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. 80" 80" 86" 88" 90"
Wanted, Forward Control Anything considered. |
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16th Apr 2018 5:54pm |
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| B4Lamb Member Since: 21 Mar 2015 Location: Abergavenny, Wales Posts: 233
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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" |
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16th Apr 2018 10:04pm |
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| spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4646
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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 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali 2008 110 2.4 tdci csw-Zulu 2011 110 2.4 tdci csw-Masai |
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16th Apr 2018 10:08pm |
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