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bell-auto-services

Member Since: 08 Jul 2007
Location: North Yorkshire
Posts: 2232

2013 Defender 110 Puma 2.2 USW Orkney Grey

Yes it can be a sensor reading problem, but the VCV is more common for this sort of idle issue.

With the bas2 rrc you can view all sensors live values which is very handy for sensor diagnostics.

http://bellautoservices.co.uk/help-faq/bas...live-data/

19th Oct 2016 9:25pm

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2110

2007 Defender 110 Puma 2.4 SW Stornoway Grey

Don't tempt me Pete....

Anyway I must change the sensor. If this doesn't solve the issue I will come back to you.

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

19th Oct 2016 11:22pm

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2110

Well the sensor change didnt solve the problem

During our long weekend the same issue happens again when we went to the farm (5 hours trip).

At the beginning and after 1-2 hrs of driving the Defender start to up-down the revs when was idle (810-700 rpms).

But the things going worst with the time and the revolutions going down for one second (drops from 2000 rpm to 900 rpm) when you release the trottle pedal despite the gear and then come back to normal. Was quite difficult to get it in idle in neutral if you dont accelerate it, and finally when you try to continue to the first gear, the engine stops with the rpms fall under 400 rpms. One strange thing is that if you stop the car for some minutes came back to normal for 30-45 minutes. No MIL or any DTC stored

The other most strange thing is that when we come back the issue doesnt appear again.

So, appears that the VCV needs to be change.

Time to buy a new VCV

and also the new BAS remap

.

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

2nd Nov 2016 10:59am

Pinky

Member Since: 09 Jun 2016
Location: England
Posts: 210

2011 Defender 110 Puma 2.4 DCPU Baltic Blue

I had the same issues. Changed the MAF sensor, changed the MAP sensor, changed the VCV, no luck! I then by chance discovered it was a loose or broken wire in the plug to the MAF sensor!
I guess removing and replacing it every time the filter was changed must have damaged it.....

2nd Nov 2016 4:13pm

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2110

Thanks Pinky

I will check that. Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge

2nd Nov 2016 5:43pm

Eduardo

Member Since: 28 Aug 2008
Location: Región Metropolitana
Posts: 2110

After the last failure I bougth in a hurry the VCV and the BAS dongle to do the re-learn process and the failure just not showed again in the last week.

Weird car. Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

Click image to enlarge

8th Nov 2016 2:24pm

DesertPuma

Member Since: 28 Nov 2015
Location: Dhahran
Posts: 5

2008 Defender 110 Puma 2.4 SW Zambezi Silver

It sounds like a VCV, Volume control valve. I did not have 5mph scenario, but all the other complaints are similar.
Cheers DesertPuma
Stationed in KSA
2008 Defender 110
1997 Defender 90
2006 Defender 110 PS 2.8

8th Dec 2016 7:53am

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