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dilukabey



Member Since: 17 May 2011
Location: Sri Lanka
Posts: 173

2009 Defender 110 Puma 2.4 SW Keswick Green
VCV Reprogramming Temperature
Hi everyone,
Just thought right time to do the vcv pump relearn by myself without replacing the vcv valve. Mine has done 114k km. Could anybody tell that the ideal engine temperature should be reached for relearn?
Cheers.
Post #615377 8th Apr 2017 5:09pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420

Chile 2007 Defender 110 Puma 2.4 SW Chawton White
you will get a message on the screen IIRC. Anyway the before you start make sure the engine is at op temp. Puma 110" SW

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Earth first. Other planets later
Post #615423 8th Apr 2017 7:52pm
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agentmulder



Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

Kuwait 
75~80�C coolant temp

Try to get it to 80 then park up quick as it'll cool during the process, mine failed a few times as I was trying to do it on a frosty morning.

I think there is an upper limit too, which can be a pain to wait to cool down from, so don't over cook the hills Wink


Oh and p.s. I have a working theory that a lot of people swapping out their VCVs and reporting back success may have simply benefitted from the relearn itself... please do report back if you see any improvement ! Solved the bowel problem, working on the consonants...
Post #615447 8th Apr 2017 10:44pm
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zsd-puma



Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

United Kingdom 2010 Defender 110 Puma 2.4 USW Santorini Black
it may depend on the device you use to do the procedure.

But with my IID tool it wouldn't let you do the releard without the engine being at temperature. It'll display the current temp, and you just raise the revs for a few min and once it hits the target temp it'll start the process.
Post #615451 8th Apr 2017 10:56pm
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dilukabey



Member Since: 17 May 2011
Location: Sri Lanka
Posts: 173

2009 Defender 110 Puma 2.4 SW Keswick Green
Hi Guys,
Finally i was able to complete the vcv pump relearn without replacing the vcv valve. Engine is much smooth and no rough idle now. I hope things will not come back again. Also i found few dtcs before the relearn to my surprise as they never appear on my scangauge. Managed to clear them off at the end of the procedure. I used SSD to perform the relearn.
Please find the pics below. Sorry about the picture quality as they were taken under screen shadow. Cheers.

https://www.defender2.net/gallery/albums/u...121110.jpg


https://www.defender2.net/gallery/albums/u...l_vcv4.jpg

https://www.defender2.net/gallery/albums/u...cv%201.jpg

https://www.defender2.net/gallery/albums/u...l_vcv3.jpg

https://www.defender2.net/gallery/albums/u...%20vcv.jpg
Post #615494 9th Apr 2017 10:03am
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agentmulder



Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

Kuwait 
^^
Hrrrm, well I do wonder how many unnecessary VCVs have been replaced?

I know that I didn't try a relearn before swapping mine out... Solved the bowel problem, working on the consonants...
Post #615498 9th Apr 2017 10:25am
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dilukabey



Member Since: 17 May 2011
Location: Sri Lanka
Posts: 173

2009 Defender 110 Puma 2.4 SW Keswick Green
well may be i was too early to update. Still after the pump relearn the idle is not smooth as what i would have thought. But the engine clatter has much improved after relearn. What i am thinking now is to replace the vcv. Only worry is that i will have to do the relearn again and that could reduce ecu data space?
Post #615535 9th Apr 2017 3:14pm
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agentmulder



Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324

Kuwait 
ECU space not an issue, I think that's a forum myth.. Solved the bowel problem, working on the consonants...
Post #615572 9th Apr 2017 6:05pm
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