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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4209
United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
That looks rock solid to me. Mine was up and down, nearly​ stalling. 2007 110 TDCi Station Wagon XS
Post #624784 17th May 2017 8:06am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
yeah, unfortunately by the time I got to my phone, it had stopped doing it.

Will monitor over the next few days, this is the first time ever that it has done something like this.

I estimate that the revs were going up by about 200-500rpm --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #624786 17th May 2017 8:12am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367
United Kingdom 
Clean the MAP and MAF sensors as a good start, free to do more or less as well.

Mine was gunked up, especially the MAP and had a significant increase in performance and quality of stable smooth idle. $W33T $0U7H3RN $UG4R
🇬🇧ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª

Last edited by custom90 on 17th May 2017 12:49pm. Edited 1 time in total
Post #624808 17th May 2017 10:36am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Shot Steve, will do that Thumbs Up

I've actually need quite lazy, I used to inspect/clean these every month, but haven't for a while. Whistle --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #624841 17th May 2017 12:43pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367
United Kingdom 
Mine wasn't cleaned for years. Embarassed

Just didn't know anything much about it until recently with the wealth of knowledge here.

Worth a go anyway. Thumbs Up $W33T $0U7H3RN $UG4R
🇬🇧ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª
Post #624842 17th May 2017 12:50pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
captured some data yesterday at idle (hot) and 2000rpm. Do these look normal?


Click image to enlarge



Click image to enlarge --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #625046 18th May 2017 8:24am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Finally got around to doing some checks on the car today.

Both the MAP and MAF were clean, no real gunk to speak of on either.

So I'll put it down to some dirt pickup due to having run the previous tank very low. I will make a note to tell my indie to drop & clean the tank and the next oil change in August, --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #625879 21st May 2017 8:41pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
damn, it did it again this morning, ambient was 14C.

I can rule out the diesel as this was a different tank from a different petrol station.

what now? Question --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #631046 13th Jun 2017 12:01pm
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ian series 1



Member Since: 17 Nov 2014
Location: south
Posts: 3127
United Kingdom 2008 Defender 90 Puma 2.4 CSW Bonatti Grey
Change your VCV valve!
I had exactly the same symptoms over the winter.


You need to read live data when it's cold to get the fluctuations a bad VCV would give,
It should be all over the place on cold start up, getting better as it warms up. 80" 80" 86" 88" 90"

Wanted, Forward Control Anything considered.
Post #631053 13th Jun 2017 12:21pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20367
United Kingdom 
As it's persistent, it could well be the VCV as suggested above.

None the less, it was worth cleaning the MAF & MAP sensors. $W33T $0U7H3RN $UG4R
🇬🇧ðŸ´ó §ó ¢ó ¥ó ®ó §ó ¿ðŸ´ó §ó ¢ó ·ó ¬ó ³ó ¿ðŸ´ó §ó ¢ó ³ó £ó ´ó ¿ðŸ‡®ðŸ‡ªðŸ‡ºðŸ‡¸â›½ï¸ðŸ›¢ï¸âš™ï¸ðŸ§°ðŸ’ª
Post #631088 13th Jun 2017 3:07pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
yep, it did it again this morning.

Skip to 29s in the video:

 --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #631254 14th Jun 2017 8:33am
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Jerry



Member Since: 13 Nov 2015
Location: Cardiff
Posts: 197
2015 Defender 110 Puma 2.2 Adventure Phoenix Orange
could it be the grade of diesel - see this thread?

http://www.defender2.net/forum/topic55077.html
Post #631288 14th Jun 2017 11:08am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
I thought it may have been, but this is a new tank from a different brand.

previous tank was BP, this is Caltex, both 50ppm. --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #631323 14th Jun 2017 1:06pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2638
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
gents, which live values should I be monitoring to diagnose if it is the VCV?

fuel rail pressure? --
2010 Defender Puma 90 + BAS remap + Alive IC + Slickshift + Ashcroft ATB rear
2015 Range Rover Sport V8 Supercharged



Defender Puma Workshop Manual: https://bit.ly/2zZ1en9
Discovery 4 Workshop Manual: https://bit.ly/2zXrtKO
Range Rover/Sport L320/L322/L494 Workshop Manual: https://bit.ly/2zc58JQ
Post #631493 15th Jun 2017 8:17am
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Nevillerover



Member Since: 14 Feb 2015
Location: Suffolk
Posts: 224
United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Sumatra Black
My 2.4 has symptoms which according to other threads is VCV, hunting, lacklustre feel, rough cold idle, so I reckon at around £40 a new VCV is worth a try.
However, I've only got an icarsoft i810 obd computer thing and I don't know if that will do the re-learn.
What happens if I don't do the learn, does it eventually learn itself over a number of miles?
Post #631652 15th Jun 2017 5:50pm
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