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williamthedog



Member Since: 29 Dec 2012
Location: south wales
Posts: 3441
2011 Defender 90 Puma 2.4 PU Tamar Blue
Vcv valve
Think the dreaded vcv valve is starting to play up.
Starts ok but get a flat spot when I put my foot down while its still warming up. Tick over is steady no fluctuation. Egr shut off.
Question, if its the vcv valve do I have to return it to standard tune,( currently got bas tune) to do the pump relearn?
I have checked the rail pressure and it isn't wildly fluctuating, theres some between desired an actual pressure but not too much.
Post #670008 10th Dec 2017 11:11am
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Rickydodah



Member Since: 14 Jul 2014
Location: East Sussex
Posts: 1091
I was advised to always return to the OE state of tune prior to carrying out any corrections regarding the pump or injectors. Thumbs Up I started with nothing and still have most of it left!
Post #670015 10th Dec 2017 11:58am
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17774
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I've always left my no-egr map alone when doing relearns and never had a problem. I cannot see any reason why it would make a difference when you think about what the relearn process is doing.
Post #670020 10th Dec 2017 2:19pm
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williamthedog



Member Since: 29 Dec 2012
Location: south wales
Posts: 3441
2011 Defender 90 Puma 2.4 PU Tamar Blue
Yes, I know what you mean, basically you are resetting the values so that the ecu starts its process afresh.
Glad you haven't had any problems leaving the remap on because I don't really want to take it off and put back on just in case the egr doesn't close fully due to it not being used for 6 years Thumbs Up
Post #670024 10th Dec 2017 2:36pm
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agentmulder



Member Since: 16 Apr 2016
Location: Outer Space
Posts: 1324
Kuwait 
^^ this happened to me last week!

Lots of smoke, hardly any power..

Cycled through a few ignition phases, knowing that it would command the 'chakka chakka chakka' and it finally freed up. Shocked

A 'just in case' blanking plate is in the mail Thumbs Up Solved the bowel problem, working on the consonants...
Post #670098 10th Dec 2017 6:00pm
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