 | Home > Technical > VCV replaced, issues doing high pressure pump relearn. |
 
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68  
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Pete is 100% right.
Aftermarket alarms are a pain in the neck and one of my main enemies in my line of work. I can't remember how many I have removed. Many garages here are toodim to even realize there is a LUCAS 10as installed in the car. So they fit some Chinese junk and can't imagine the problems it causes. How to find it.. follow the extra wire that goes to a door switch or a suspicious item under your roof. Normally the junk sits behind the dash. Disconnect. Reconnect your 10AS , wiring diagrams are all over the net. In doubt ask. Your IIDTool ( I think this is what Pete sells) does not do 10AS but a Nanocom or Haweye will. Before !!! you do reprogram the alarm ask me I will tell you the specifics. Then you have to get rid of EVERY single errror in the engine module, then it will work fine. |
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24th Nov 2017 4:22pm |
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| dorsetsmith Member Since: 30 Oct 2011 Location: South West Posts: 4554 |
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24th Nov 2017 4:36pm |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20580 
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Nanocom works well, Ive used one with good results before. KEEP CALM AND Drill ON
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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24th Nov 2017 4:40pm |
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| Dieselhead Member Since: 21 Oct 2012 Location: Pulborough. West Sussex Posts: 552 |
My 110 will not do Pump Learn
Mate tried various times through the day when it was at the right temp etc & nothing Gave up & it runs fine  Chris
2008 XS 110 2.4 Utility. Tonga Green 1953 Series 1 for restoration 1983 Mini Mayfair 2004 VW T5 Camper 2008 Diahatsu Sirion. Thats hers Classic Bolens Garden Tractors |
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25th Nov 2017 7:21pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720 
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I had trouble getting mine to do a relearn. The non-genuine Pressure relief valve was the problem, put a genuine one in and it went throught the relearn first time.
If your PRV is blown it'll also fail, and if you've replaced the PRV and forgotten to remove the old copper washer (so it now has two fitted) it'll fail. It'll run fine without doing it, but it'll run better if you do. |
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25th Nov 2017 11:27pm |
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| Bluest Member Since: 23 Apr 2016 Location: Lancashire Posts: 4227 
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When it does the relearn, what actually happens? When I hit the button on the Nanocom nothing happened, it didnt say yes or no, so no idea if it did anything. 2007 110 TDCi Station Wagon XS
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26th Nov 2017 6:57am |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429 
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Thanks for your replies everyone!
It's a little unusual that the pilot correction works ok, but the pump relearn doesn't. Interesting thought about the non-genuine VCV not working. Didn't know that was a thing, but it didn't work with my standard one either, so I think I can disregard that for now. In regards to the alarm/immobilizer Annette, I've actually still got the original alarm connected too! They must be working alongside each other and so far no other issues with it! I think I'd prefer to just leave it be if this is the only thing playing up at the moment! I've spoken to the first owner, who installed it, who say it'll be a dash out job to get to it, plus its all taped up and hidden. Sounds like a nightmare to pull out.  Whats your line of work, if you don't mind me asking?
I'll see if an Indy will be able to do the learn process with their gear unless someone in the Norfolk area wishes to be generous with a Nanocom to give it a try? Thanks again. |
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26th Nov 2017 3:34pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720
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Non Genuine PRV. It's the pressure valve on the back of the fuel rail, if the VCV has been playing up they pressure releif valve can fail, if it has you wont pass the relearn. |
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26th Nov 2017 7:14pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429
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Ah ok! I presume thered be more serious symptoms if I had a popped PRV than just rough running when cold?
Ive been watching my fuel rail pressures and they dont seem to be out of the ordinary. Thanks again |
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26th Nov 2017 7:26pm |
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| annette Member Since: 24 Nov 2017 Location: Tilarán, Costa Rica Posts: 68
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Yes. I am part owner of a garage and as you might guess the one who does all the electrical stuff. Now getting back into a P38 with  diagnostics. Fixing Land Rovers in rural Guanacaste |
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27th Nov 2017 6:16pm |
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| zsd-puma Member Since: 09 Aug 2016 Location: Kent Posts: 2720
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Unless it's previously been replaced with a non-genuine one or someone left the old washer in there as well as the new one. The non-genuine one i tried on mine, looked identical and had no obvious fault with it, but it wouldn't go through the learning process with it fitted. With a new genuine one fitted it went through first time. I'm not saying this is definitely your problem, but it's a possibility. It seems a lot of the Transit guys replace the PRV and Pressure sensor at either ends of the fuel rail when ever they replace a VCV. Are your injectors all tight? |
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27th Nov 2017 6:21pm |
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| BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429
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I had them checked around 6 months ago when i bought the truck and everything was all good. Ill have another route around when I can.
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27th Nov 2017 7:56pm |
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