 | Home > Puma (Tdci) > VCV and the learning |
 
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| keef9t Member Since: 13 Mar 2016 Location: manchester Posts: 170   
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My engine doesn't like the recent cold mornings. The erratic tick over is there until it reaches temperature, after being ok in the warmer weather. So I have ordered a replacement VCV. Having read the various forum threads on the subject, this seems to be the usual fix.
As I don't have access to a device that will do the learning and the nearest Indy or Dealer is some distance away, I have a few questions: Will the engine start and run ok after I fit the new VCV. Does it eventually learn itself. If not, how far is it safe to drive, to get to a dealer in order to have the learning done. Thanks, Keith Life is short, so have your pudding first --------------------------------------------- 2007 90 2.4Tdci County HT Stornaway Discovery 1 200Tdi Sold 90 Turbo Diesel HT Sold 110 2.5NA CSW Stolen 88 Series II Sold Meccano Set. Don't know what happened to that |
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25th Sep 2018 3:14pm |
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| Scoobeenut Member Since: 04 Mar 2015 Location: West London Posts: 310 
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I beleive that the vcv will relearn over time, just that it’s quicker to do the learn by programming.
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25th Sep 2018 4:32pm |
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| Eduardo Member Since: 28 Aug 2008 Location: Región Metropolitana Posts: 2109  
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Same as Bluest.
I changed the VCV and didnt run amy re-learning and working OK after 20,000 Km Cheers Eduardo MY 2007 110 SW PUMA 2.4: Big Fog of 64' MY 1994 Jayco 1207 Folding camper: "El Tremendo"  Click image to enlarge |
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25th Sep 2018 9:30pm |
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| ozzie1989 Member Since: 25 Feb 2009 Location: Wales Posts: 282  
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If you fancy spending another £15 you can get an appropriate OBDII adaptor and use the free FORscan software to do the pump learn etc.
I did mine the other day (see my thread a little further down the page) without changing the VCV and it has been like a different vehicle to drive. Now: 2010 2.4 TDCi 110 Utility Wagon Then: 2004 2.5 TD5 90 Hard Top (X-Tech Edition) |
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25th Sep 2018 10:05pm |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68 
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I have been faffing aroung for 2 days and endless times to do the Pilot Learning thg with my gap tool
All I get is Learning not completed status 17 (very clear as a message  )
and operation failed E7 Total PITA. Wrote to Gap. No joy No idea what to do anymore Diesel, oil and air filter are new and OEM. So is the head gasket and a lot more. dunno what to do anymore. When I connect 12 v shortly to the VCV it moves. Anything else I can do? Fixing Land Rovers in rural Guanacaste |
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26th Sep 2018 8:07pm |
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| keef9t Member Since: 13 Mar 2016 Location: manchester Posts: 170
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Hmmm. Now I have a dilemma. Do I replace the VCV and not bother with the re-learn or do I down load the software and just try a pump learn. I must admit I am not comfortable dealing with software and electricery, I'm more of a nuts, bolts and spanner person.
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26th Sep 2018 8:13pm |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68
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Hi Keef
How did you test your VCV? thank you Fixing Land Rovers in rural Guanacaste |
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26th Sep 2018 8:22pm |
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| keef9t Member Since: 13 Mar 2016 Location: manchester Posts: 170
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I didn't. Having read loads of threads on this forum, it seems the most common cause of lumpy/erratic idling, when the engine is cold, is the VCV valve. For the sake of £30 from PF Jones and an hour of my time, I thought I would give it a go.
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26th Sep 2018 9:00pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4194 
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If you do replace it. Take the piston out of the old one and have a look for any scoring or wear. I’m convinced this is what causes the problem. Mine had some light scoring on it. 2007 110 TDCi Station Wagon XS
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26th Sep 2018 9:17pm |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68
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We had it out yesterday.
Connected it to 12 v shortly and it moves. But how do I get the  thing to reprogram
I can do the high pressure pump learning but not the pilot learning. It always (about 56 times now) break off after 5 seconds and throws up status 17 and error e7 The car has no power, (all filters new OEM, new head gasket new oil cooler) and everybody tells me it needs relearning. But HOW? I have asked GAP, they don't know either Click image to enlarge Fixing Land Rovers in rural Guanacaste |
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27th Sep 2018 2:46pm |
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| Scoobeenut Member Since: 04 Mar 2015 Location: West London Posts: 310
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I had problems after installing the BAS remap on my TDCI, I tried to do the pump relearn and pilot correction but it consistently failed. After speaking to Pete Bell at BAS he said to fit a new VCV which I subsequently did, pilot correction and pump relearn then went through 1st time.
I don’t think it is possible to repair the vcv and as it is an inexpensive part it is just easier to replace. Some useful information here on the BAS website including a little video on what the vcv does. |
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27th Sep 2018 3:47pm |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68
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Till it gets here it is sadly worth about the triple of the £59 you guys pay. plus I can't get it faster than 10 days
I connected it to a battery and yes it moves. But the real question is what conditions need to be met to reprogram the pump and injectors. Apart from 75 degrees [difficult] and no faults other than learning not done. My boss is going berserk as I am not getting any joy. Mind you it came in for a head gasket and I assume that does not damage the valve. Fixing Land Rovers in rural Guanacaste |
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27th Sep 2018 4:01pm |
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| agentmulder Member Since: 16 Apr 2016 Location: Outer Space Posts: 1324 
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I cant recall the error message I got but the issue in my case (with failed learning procedures) was that the engine was not staying in the correct temperature range for the full duration of the test. Quite hard to achieve if it's cold out... Solved the bowel problem, working on the consonants...
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29th Sep 2018 5:54am |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68
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Thank you agentmulder, I suspected that but we managed to heat it up doing 10 minutes i second gear but then I found it in the end..
http://www.defender2.net/forum/viewtopic.php?p=731810#731810 Fixing Land Rovers in rural Guanacaste |
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1st Oct 2018 4:22pm |
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