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GeorgeTDI07



Member Since: 14 Jan 2019
Location: Suffolk
Posts: 5
United Kingdom 2007 Defender 110 Puma 2.4 SW Indus Silver
Station wagon 07 Puma 2.4 idling problem...help please!
My Defender is out of action for the second time in the last 12 months. The problem is that the engine wont idle. Nothing shows on diagnostics and nothing appears to be wrong with it.
Two Defender specialists have looked at the engine and neither have been able to resolve the problem. The following things have been check/repaired/replaced. ABS modulator, Switch speed control, EGR valve, gasket EGR valve, Reprogrammed EGR, remove/clean out fuel tank, fuel pressure valve (both), filter replacement, Hose fuel, Replaced injectors Sad reprogramming...amongst other things.
I have come across other people with the same problem but no one seem to have a solution. My next possible step could be to replace the high pressure pump but I have spent an eye watering amount of money already and there is nothing to say that this is going to fix the problem either....Any ideas anyone?!
Post #751187 14th Jan 2019 1:13pm
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schuee



Member Since: 16 Jul 2012
Location: Lincolnshire
Posts: 378
United Kingdom 2011 Defender 110 Puma 2.4 USW Orkney Grey
George,

A faulty VCV valve shows no fault codes, I had idle issues, especially when cold, so just replaced VCV and had it learned and all resolved Thumbs Up

Could be something else, though worth looking into.


https://www.defender2.net/forum/topic30222...t=vcv+idle

https://www.4x4community.co.za/forum/showt...trol-Valve

Cheers

Keith MY2011 110 XS USW
Post #751193 14th Jan 2019 1:35pm
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williamthedog



Member Since: 29 Dec 2012
Location: south wales
Posts: 3441
2011 Defender 90 Puma 2.4 PU Tamar Blue
Yep as said above vcv your best bet Thumbs Up
Post #751195 14th Jan 2019 1:48pm
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GeorgeTDI07



Member Since: 14 Jan 2019
Location: Suffolk
Posts: 5
United Kingdom 2007 Defender 110 Puma 2.4 SW Indus Silver
Thanks Keith, yes been there and replaced that!
Post #751197 14th Jan 2019 2:02pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6318
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
it won't idle at all or idles very poorly?
did it suddenly happen or was it progressive?
Post #751207 14th Jan 2019 3:38pm
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hornet



Member Since: 04 Jan 2010
Location: Western Europe
Posts: 362
Re: Station wagon 07 Puma 2.4 idling problem...help please!
GeorgeTDI07 wrote:
My Defender is out of action for the second time in the last 12 months. The problem is that the engine wont idle. [...]


If it rotates but does not start, a faulty crankshaft- or camshaft-sensor (plug, wiring, seat, etc.) may be the reason.


Click image to enlarge
Post #751393 15th Jan 2019 9:45am
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GeorgeTDI07



Member Since: 14 Jan 2019
Location: Suffolk
Posts: 5
United Kingdom 2007 Defender 110 Puma 2.4 SW Indus Silver
It starts straight away but won’t idle. If you keep revs above 2000 it’s ok but as soon as you take your foot off the excelerator it cuts out. It came on gradually....we’ve checked all the obvious things and replaced lots of parts. It’s stumped 2 defender repair specialist, so it’s got to be something no one thought about....!
Post #751453 15th Jan 2019 2:34pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6318
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
I see the egr has been replaced......does it definitely work correctly tho?

sorry not sure what else to suggest at the moment? good luck.
Post #751454 15th Jan 2019 2:37pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626
United Kingdom 
Try replacing the clutch switch. TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪
Post #751456 15th Jan 2019 2:56pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6318
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
sorry Steve,

not sure how that would help? I've disconnected the clutch switch and all it did was over rev / hang when changing gear as it doesn't reduce engine torq on clutch depress.
Post #751464 15th Jan 2019 3:19pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6318
England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
ah....

could it be switch is the problem ie the engine is constantly in reduced torq mode ie like having the clutch depressed all the time?

in which case simply disconnecting would confirm if that's the problem or not?
Post #751465 15th Jan 2019 3:20pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 17610
United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
It sounds very VCV-like to me. I'd almost be inclined to try replacing it again.
Post #751477 15th Jan 2019 4:16pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2454
Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Not sure if I am just adding noise, but what about gas pedal sensor? Puma 110" SW

.............................................................
Earth first. Other planets later
Post #751487 15th Jan 2019 5:29pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20626
United Kingdom 
Blackwolf could well be right, the symptoms are there.

Regarding the clutch switch, no you cannot just disconnect it on a Puma. Either replace the switch and re-connect or bridge it. You cannot just unplug it, it will not run correctly at all like that. TheThunder Rolls🇬🇧🇺🇸
⛽️🛢️⚙️🧰💪
Post #751512 15th Jan 2019 7:00pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5811
2006 Defender 110 Td5 USW Zermatt Silver
Did you get your VCV programmed via the learn process?
Post #751547 15th Jan 2019 9:17pm
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