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| Phoenix90 Member Since: 04 Mar 2012 Location: Cornwall Posts: 377   
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Glad you got it sorted BW
As a matter of interest (for future reference). Although this doesn't necessarily cause any fault codes, would there be some changes to any of the live data that would help to diagnose the fault? |
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29th Dec 2013 11:56pm |
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| Lorryman100 Member Since: 01 Oct 2010 Location: Here Posts: 2686 |
Thanks for the offer BW but I have a few failed ones here already which I have tested with a variable voltage regulator to see how they perform.
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30th Dec 2013 3:56pm |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17417 
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A very good question! I didn't actually manage to capture live data when the fault was happening, so I can't answer definitively. What I think must have been happening was that the VCV was sticking or responding sluggishly, and when the demand for more fuel was made the LP pump was failing to supply enough fuel to the HP pump due to the VCV continuing to divert fuel to the return line. This would presumably result in the fuel rail pressure either dropping (injectors supplying a bigger shot but the fuel in the rail not being replenished) or simply not increasing as intended. So although I was unable to capture data showing this, it may be that it can be captured. It is interesting that it doesn't cause a low fuel rail pressure DTC though, and I suspect that this is due to a deficiency with the ECU's fault detection algorithms. It makes me think that the ECU doesn't detect a pressure that is within working parameters but inappropriate for the demands being made on the engine at the time. It is frustrating because there's so much more we could understand if we had access the the source code and programming data for the ECU (fat chance, of course)! My VCV was evidently failing to close promptly when required. If one failed to open promptly I would expect the fuel rail pressure to become excessive, which will produce a DTC and may also pop the pressure relief valve. This doesn't seem as common, which may be due to the VCV being open by default. |
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30th Dec 2013 7:25pm |
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| bm52 Member Since: 04 Apr 2010 Location: Kent Posts: 2189 
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Mine is getting much worse so I am going to change the valve.
Please can someone advise which tool I need to undertake the re-learn? Is it only Faultmate or will any faultreader do, I have a mid range Autologic. Thanks BM52 |
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16th Jan 2014 8:13pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298  
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Bm52. Not sure if you have read else where but it would appear my problem has been the turbo and / or the actuator.
It's at the dealer now and should be back next week. Will let you know how it is when I get it back. Good luck with yours. |
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18th Feb 2014 9:27pm |
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| bm52 Member Since: 04 Apr 2010 Location: Kent Posts: 2189
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Hi been away for a few days, thanks for the update, I would be very interested in the outcome of the dealer diagnosis.
Thanks BM52 |
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21st Feb 2014 5:09pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298
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Bm52
Just to let you know dealer has confirmed turbo issue and should be completed work middle of next week. |
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21st Feb 2014 6:00pm |
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| bm52 Member Since: 04 Apr 2010 Location: Kent Posts: 2189
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Thanks for the update, would appreciate details when known BM52
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21st Feb 2014 6:53pm |
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| Theater Member Since: 27 Sep 2010 Location: Pisa Italy Posts: 514  
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EBAY : GBP 70,89 + GBP 10,50
http://www.ebay.it/itm/FORD-TRANSIT-MK7-2-...3a9261200f  Marco
Defender 110 "SW" SE Galway Green MY 2009 Ex Defender 90 "SW" S Santorini Black MY 2010 |
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2nd Sep 2014 7:39pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298
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bm52.....
sorry just came across this - to answer your question; dealer replaced turbo and suggested the fault was due to excessive play in the spindle. to be honest I'm not sure if this was a guess or not. yes the was obvious play in the spindle but it certainly wasn't the full fix I was expecting but there was a marked improvement. there's been numerous other fixes / improvements along the way too. so all in all I'm not sure my experiences are going to be of any help to you. |
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26th Sep 2014 8:47am |
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| johnnyturbo2002 Member Since: 21 May 2009 Location: Poniente Granadino Posts: 371  
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Thanks Just bought one!! 2008 Defender 110 60 year Edition (sold unfortunately) IN the hunt for another Puma for the wifey! 2008 Kia Sorento LX 😁 2.5crdi |
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28th Feb 2015 3:39pm |
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| johnnyturbo2002 Member Since: 21 May 2009 Location: Poniente Granadino Posts: 371
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thanks for all the work on this, My wife told me this morning that the defender was acting up and upon test drive (she drives it) it seemed like it was getting starved of fuel or the diesel was bad, (she left the cap off in a rainy sotrmy day,) so I thought that it could be some water in the lines somewhere. Fill up and run for quite some time at various speeds and still getting the problems that you mentioned. Seemed a bit worse while shifting into reverse, and then dying on me...
anyway, when the part comes and the fix is in, Ill update and see if this too is the same thing you had. If not it is the EGR that is open and closing on it's own accord...sometimes working great and others not, cheers, enjoy the ruby weekend John 2008 Defender 110 60 year Edition (sold unfortunately) IN the hunt for another Puma for the wifey! 2008 Kia Sorento LX 😁 2.5crdi |
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28th Feb 2015 3:45pm |
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