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Christopher



Member Since: 05 Jan 2014
Location: London
Posts: 2

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Corris Grey
Puma struggling to idle - I have fault codes
Hi, this is my first post so I do apologise if I make any mistakes.

I have a 2007 Puma.

About 3 weeks ago it intermittently started to struggle to idle and stalled every now and then. This has been happening on and off for the last three weeks.

I have a Nanocom so hooked that up today, cleared all of the faults that were present, started the engine and it stalled within 5 seconds. Started it again and took it for a good 10 minute drive and checked the fault codes afterwards - this is what it says:

Under the engine option:

0404 - 72 Exhaust Gas Recirculation (EGR) Cont range / performance actuator stuck open

0100 - 36 Mass or volume air flow A circuit Signal frequency too low

0623 - 23 Generator lamp control circuit Signal stuck low

0606 - 49 Engine control module (ECM) processor Internal electrical failure


Under the instrument option:

1602 - 31 Unknown

C401 - 68 Invalid Data Received from ECM


Does anyone have any suggestions on what the problem or problems might be and where I should start? Is there a list of items it could be that I could work through?

I'm a little mechanically minded and very keen to learn, last month I replaced parts of the ABS system in the car to fix a problem it was having so I'm definitely keen to get stuck in and fix it myself, I just need pointing in the right direction of what the problem might be.

From reading posts on the forum I get the feeling it is the EGR, I just wanted to make sure that the other fault codes do not actually show that it is a grounding issue or something completely different - don't want to get stuck into the EGR if it in fact has nothing to do with that.

Thank you - any help is much appreciated.
Post #296014 5th Jan 2014 4:26pm
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Cheshire110



Member Since: 26 Jul 2013
Location: Cheshire/London
Posts: 2724

United Kingdom 
Just a quick thing to check is that your fuel filter isn't blocked/more than a year or 2 without being replaced

They don't seem to get changed with a service, but they should do in my opinion.

Mine was blocked and causing engine to be down on power/intermittently stalling Cheers, David
Land Rovers of all shapes S3 onwards… Daily is a 110 V8.
Post #296041 5th Jan 2014 5:49pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6265

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Forgive my la k of knowledge but I'm guessing it's fuel starvation of sorts so filter, fuel line leak / air into system or perhaps as black wolf has experienced recently the fuel valve (vcv) on the low pressure side of the pump? Somewhere to start perhaps?

Good luck
Post #296042 5th Jan 2014 5:51pm
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Caterham



Member Since: 06 Nov 2008
Location: Birmingham
Posts: 6265

England 2011 Defender 110 Puma 2.4 XS CSW Stornoway Grey
Forgive my la k of knowledge but I'm guessing it's fuel starvation of sorts so filter, fuel line leak / air into system or perhaps as black wolf has experienced recently the fuel valve (vcv) on the low pressure side of the pump? Somewhere to start perhaps?

Good luck
Post #296043 5th Jan 2014 5:52pm
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Christopher



Member Since: 05 Jan 2014
Location: London
Posts: 2

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Corris Grey
UPDATE:

Sorry should have mentioned that a major service was performed two weeks ago - a week after the problem started. The service did not make the problem worse but it did not fix it either.

Work carried out:

Oil changed
Brake fluid changed
Coolant changed
Oil filter changed
Air filter changed
New front brake pads

The fuel filter was not changed (at least it has not been stated so on my invoice).
Post #296045 5th Jan 2014 5:59pm
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big steve



Member Since: 24 Dec 2009
Location: hertfordshire
Posts: 2456

United Kingdom 2015 Defender 90 Puma 2.2 HT Montalcino Red
Get it changed or check it's been changed sounds like water in fuel to me 2015 2.2 tdci hardtop xs
3.2 conversion DONE 238bhp and 707nm torque and thats just the start ;-P
hybrid turbo in build -done ready to fit
ashcroft atb in transfer box
6 speed auto in build
Post #296054 5th Jan 2014 6:15pm
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Phoenix90



Member Since: 04 Mar 2012
Location: Cornwall
Posts: 377

United Kingdom 2007 Defender 110 Puma 2.4 USW Stornoway Grey
Caterham wrote:
....blackwolf has experienced recently the fuel valve (vcv) on the low pressure side of the pump? Somewhere to start perhaps?


Check out This Thread for the problems blackwolf had. He thought it was contaminated fuel in the beginning (which it was to a degree) but it seems the eventual fault was the valve as Caterham describes.
Post #296061 5th Jan 2014 6:28pm
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Cheshire110



Member Since: 26 Jul 2013
Location: Cheshire/London
Posts: 2724

United Kingdom 
Yeah as I said fuel filter seems to be ignored by land rover services, also seems to happen with other manufacturers!

Both my 110, mums RR and dads toyota land cruiser have experienced fuel problems over the last 4/5 years, only for us to find out the fuel filter hadn't been changed for years...

I change mine every year or so now Cheers, David
Land Rovers of all shapes S3 onwards… Daily is a 110 V8.
Post #296062 5th Jan 2014 6:28pm
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GUM97



Member Since: 05 Feb 2012
Location: Cheshire
Posts: 3555

United Kingdom 1997 Defender 90 300 Tdi HT Stornoway Grey
Dad's old D3 never had the fuel filter changed until we bought it... Apparently it's not something that ever needs to be changed according to LR! An engine to TDi for!
"Land Rover- Proudly turning drivers into mechanics since 1948"
Post #296072 5th Jan 2014 6:50pm
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Lorryman100



Member Since: 01 Oct 2010
Location: Here
Posts: 2686

Re: Puma struggling to idle - I have fault codes
Christopher wrote:


Under the engine option:

0404 - 72 Exhaust Gas Recirculation (EGR) Cont range / performance actuator stuck open

0100 - 36 Mass or volume air flow A circuit Signal frequency too low

0623 - 23 Generator lamp control circuit Signal stuck low

0606 - 49 Engine control module (ECM) processor Internal electrical failure


Under the instrument option:

1602 - 31 Unknown

C401 - 68 Invalid Data Received from ECM




First off was the MIL illuminated when you checked the DTC's? The Nanocom, whilst a good carry diagnostic tool, does not have the ability to differentiate between tested and untested DTC's.

P0404: Does the EGR carry out the self clean cycle on engine shut down, 5 x chukka chukkas? If yes unplug the EGR electrical connection and go for a drive. Does this cure the idling issue?? (The MIL will illuminate and there will be 2 tested dtc's logged in the EMS when the EGR is unplugged.).

P0100: very common untested DTC, which will clear after 40 ignition cycles as long as the fault does not reoccur. If it keeps reappearing change the MAF sensor in the Airbox, about £35.

P0623: check the accessory belt for wear and that the tensioner is still tensioning the belt. If overly worn, replace.

P0606: very common DTC which appears every time you plug something into the OBDII socket ie: your Nanocom.

Also remove the MAP sensor and clean with a spray carburettor cleaner. Let us know how you got on.

HTH. Thumbs Up
Post #296095 5th Jan 2014 7:56pm
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blackwolf



Member Since: 03 Nov 2009
Location: South West England
Posts: 16892

United Kingdom 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
I'd be looking at the EGR first, could cause all the symptoms you have.

It is unlikely to be the VCV or a LP/HP fuel problem with those DTCs.
Post #296159 5th Jan 2014 10:17pm
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Markbonz



Member Since: 31 Oct 2013
Location: Essex
Posts: 15

United Kingdom 2013 Defender 110 Puma 2.2 XS CSW Corris Grey
Rough idle
Hi sounds like prv pressure relief valve and scv suction control valve on my transits with the 2.4 engine get these symptoms happen about once a year rough idle, hunting and stalling or engine cutting out at low revs, very common approx £ 170 inc for both parts £70 labour.
You must replace both parts
Post #296610 7th Jan 2014 6:42pm
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bga86



Member Since: 17 Jan 2014
Location: Here and there
Posts: 205

2015 Defender 90 Puma 2.2 HT Fuji White
Agree with blackwolf here, have seen this issue before due to failed egr valves
Post #299736 17th Jan 2014 9:08pm
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K9F



Member Since: 12 Nov 2009
Location: Bournemouth
Posts: 9610

United Kingdom 2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey
blackwolf wrote:
I'd be looking at the EGR first, could cause all the symptoms you have.

It is unlikely to be the VCV or a LP/HP fuel problem with those DTCs.


Agree 100% fuel starvation won't cause your EGR valve to stick. Start with the obvious before 'chasing your tail off on a tangent.' If you go through life with your head in the sand....all people will see is an ar5e!!

Treat every day as if it is your last....one day you will be right!!
Post #299774 17th Jan 2014 10:54pm
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defender_uk



Member Since: 12 Aug 2011
Location: SW Scotland
Posts: 197

Scotland 
just had mine in the dealers for eight weeks while they tried to sort it.

Change the two high pressure fuel valves at either end of the fuel rail at a cost of £320 and iw will be sorted. Cost me well in excess of £1000 while they tried to sort it out!! 2020 First Ed 110.

replaced by 2021 250 110 Commercial

Defender_uk
Post #299779 17th Jan 2014 11:04pm
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