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mirafra



Member Since: 11 Dec 2010
Location: Hillcrest, South Africa
Posts: 4

2008 Defender 110 Puma 2.4 SW Zambezi Silver
Puma Cutting out while idling
I live in Durban South Africa. My 2008 Puma cuts out while idling whether the engine is hot or cold. It starts normally and idles normally for a short while (about a minute or so) then the idle gets erratic (hunts) and then it cuts out. It will restart straight away, but the process mentioned above repeats itself. I have just had the Puma serviced, and complained of the above symptoms. Was told the ERG unit need to be replaced, which was replaced during the service. The problem has improved but has not been resolved, as it still cuts out while idling.

I have changed fuel types, but have the same problem. I have since checked for faults using the Hawkeye diagnostic tool. No faults recorded. I have a scangauge connected permanently. This also shows no faults. Any ideas to resolve the problem will be appreciated.
Post #223097 29th Mar 2013 7:11am
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110SEB



Member Since: 29 Jan 2009
Location: Essex, England
Posts: 1444

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
Loose leads. I had this. push every lead you can find in hard and Bob's your Uncle.
Post #223105 29th Mar 2013 8:32am
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noworries4x4



Member Since: 24 Dec 2010
Location: Newton Abbot Devon
Posts: 1195

England 
I would check the fuel filter has been fitted properly, those nasty 1/4 turn thing dont bite the seal properly sometimes, mine would not idle when Land Rover fitted 1 wrong but it also leaked when the tank was full showing me where to look. If everything is under control you are not going fast enough.

Every Day 16 MY Discovery 4 Commercial Workshop and Escort Vehicle
Weekends 07MY L322 TDV8 Vogue SE
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Post #223128 29th Mar 2013 9:59am
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cinstone



Member Since: 29 Nov 2010
Location: Stourbridge
Posts: 375

England 2015 Defender 90 Puma 2.2 XS CSW Keswick Green
I would also check that the filler cap breather isn't blocked or restricted.

Start up and wait until problem occurs. Before restarting, remove filler cap and note any sounds of air rushing in.

Leave filler cap off, keeping any flames or sparks away from tank, and start engine again. If it runs fine, there's your problem.

Sods law would sugest it won't be anything so simple, but it's a quick check and cost nothing but a few pence of fuel.

Do you find the problem occurs more quickly if you have a full or nearly full tank, as oppossed to one that's got, say half or less of a full tank?

Chris. http://shropshirelandrovers.freeforums.org

2015 Defender 90 XS SW & Helen, 1964 IIa. Previously 2012 Defender 90 XS SW & 2008 90 XS SW.

Previous LR's: Michael, my 2008 Defender 90 XS SW.

Machinas oportet intrare non capsicum annuum faveo
Post #223194 29th Mar 2013 3:55pm
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mirafra



Member Since: 11 Dec 2010
Location: Hillcrest, South Africa
Posts: 4

2008 Defender 110 Puma 2.4 SW Zambezi Silver
Hi Guys,

Thanks for the responses.

I have pushed and pulled all relays, plugs and connections, still the same problem.

I don't think it is the fuel filter sucking air, as it cut out both before and after the service. The filter was changed as part of the service.

I will check for suction on the fuel filler in the morning.

Any more suggestions will be appreciated.
Post #223204 29th Mar 2013 4:53pm
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MD5



Member Since: 02 May 2011
Location: Italy
Posts: 143

2009 Defender 110 Puma 2.4 SW Alpine White
To isolate possible breather problem in the fuel tank, just unscrew or remove the filler cap.

Since no DTC are detected, I think you could have a fuel feed problem. This kind of problem is usually not recognised by engine built in diagnostic.

Check the fuel feeding from the tank to the fuel filter. Detach the quick connect from the filter and blow compressed air into the feeding pipe.
Then do the fuel priming and check the idle. If OK, then you also need to clean the fuel tank.
Post #223594 31st Mar 2013 6:19am
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mirafra



Member Since: 11 Dec 2010
Location: Hillcrest, South Africa
Posts: 4

2008 Defender 110 Puma 2.4 SW Zambezi Silver
Thanks for the latest response. I will look into blowing the fuel lines clean.

I was also wondering if either the Fuel Pressure Sensor or the Pressure Limiting Valve could be the culprits. Does anyone on the forum have experience with either of these two being faulty causing cutting out while idling. If they were faulty would a fault code always be reported?
Post #223597 31st Mar 2013 7:42am
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vito115



Member Since: 29 Aug 2012
Location: kent
Posts: 29

Try taking the MAP sensor out and cleaning it with brake cleaner / petrol & a tooth brush,
Post #223641 31st Mar 2013 10:49am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2586

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Considering the likelihood of dodgy diesel in SA, I would also recommend you drop the tank and see if there's any gunk blocking the fuel pickup --
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 #223978 1st Apr 2013 7:45pm
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astoltz



Member Since: 08 Mar 2011
Location: South Africa
Posts: 31

South Africa 
http://4x4community.co.za/forum/showthread.php?t=162835

--------------------------------------------------------------------------------

So after another successful trip to Angola, (4th trip but first trip with the Puma), on my return leg via Namibia, I filled the 180litres at Windhoek.

From Windhoek I drove to Rietfonetein border post. At the border post the Puma idle for short time and stopped. It started straight away but then after 5s to 20s seconds while at idle the engine stop. (While driving the Puma one do not have/feel any problems). It would also Idle sometimes erratically.

Now I had this before (Lastest was last year in Kaokoland , but not severe as this time) for a short period. Had to drain the fuel filter’s water trap 2 or 3 times but eventually it was sorted.
So this time I drained the water trap several time but the idle problem persisted.

In Sannieshof I replaced the fuel filter. It was better but still problematic and since had to drain the water trap several times.

Back home I decided to siphon the remaining 30l of diesel out of the tank as much as I can. Removed and emptied filter. Filled filter with new diesel and refit. Refilled with 50l new Diesel. Much much better.

Yesterday I drove to Sasolburg and drain the water trap twice just in case. Only once had the engine stopped at idle. And twice the Puma would idle erratically.

This morning return from Sasolburg and filled the tank.

Puma now idle normal.

There is not water in the diesel I have siphoned from the diesel tank. But definitely there is some problems with the diesel I siphoned from the tank.
If I have time I would like to send a sample to be analysed for interest sake

Regards
Abrie 1997 Land Rover Defender 110 HT 2.8i
(BMW M52)

2009 Land Rover Defender 110 HT 2.4 TDCi(Puma)
Post #269765 27th Sep 2013 3:11pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2586

South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Abrie, you may still want to drop the tank, there may be gunk that is now partially blocking the fuel pick-up. You will not see this until you drop the tank and inspect the fuel inlet. --
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 #269768 27th Sep 2013 3:20pm
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mirafra



Member Since: 11 Dec 2010
Location: Hillcrest, South Africa
Posts: 4

2008 Defender 110 Puma 2.4 SW Zambezi Silver
Thanks for all the responses.

The problem seems to have improved at the moment, but still sometimes idles roughly first thing in the morning when cold. I suspect a temperature sensor, or something is not quite right with a cold engine. As the engine warms, the problem goes away. Could it possibly be a temperature sensor on its way out, but not malfunctioning sufficiently to show up as a fault?

Your responses will be appreciated.
Post #269799 27th Sep 2013 5:49pm
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Skye_Rover



Member Since: 30 Aug 2013
Location: Skye
Posts: 85

Scotland 1998 Defender 110 300 Tdi CSW Cairns Blue
It is possible that there is a faulty cylinder head temperature sensor at fault - you would need to run a scanner on this channel whilst the vehicle warmed-up from cold to see any drop-outs.

As others have already said here, it is more likely, therefore you should try this first, that you have a faulty fuel supply system. Something is warming-up with the engine, and starts to seal. You need to get to the source of the problem, something basic, rather than looking for electrical problems. Roads? Where we're going, we don't need roads.
Post #269829 27th Sep 2013 7:54pm
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astoltz



Member Since: 08 Mar 2011
Location: South Africa
Posts: 31

South Africa 
astoltz wrote:
http://4x4community.co.za/forum/showthread.php?t=162835

--------------------------------------------------------------------------------

So after another successful trip to Angola, (4th trip but first trip with the Puma), on my return leg via Namibia, I filled the 180litres at Windhoek.

From Windhoek I drove to Rietfonetein border post. At the border post the Puma idle for short time and stopped. It started straight away but then after 5s to 20s seconds while at idle the engine stop. (While driving the Puma one do not have/feel any problems). It would also Idle sometimes erratically.

Now I had this before (Lastest was last year in Kaokoland , but not severe as this time) for a short period. Had to drain the fuel filter’s water trap 2 or 3 times but eventually it was sorted.
So this time I drained the water trap several time but the idle problem persisted.

In Sannieshof I replaced the fuel filter. It was better but still problematic and since had to drain the water trap several times.

Back home I decided to siphon the remaining 30l of diesel out of the tank as much as I can. Removed and emptied filter. Filled filter with new diesel and refit. Refilled with 50l new Diesel. Much much better.

Yesterday I drove to Sasolburg and drain the water trap twice just in case. Only once had the engine stopped at idle. And twice the Puma would idle erratically.

This morning return from Sasolburg and filled the tank.

Puma now idle normal.

There is not water in the diesel I have siphoned from the diesel tank. But definitely there is some problems with the diesel I siphoned from the tank.
If I have time I would like to send a sample to be analysed for interest sake

Regards
Abrie


Just quick feedback...
Puma is still running 100% without erratic idle or cut out while idling after I siphoned the 30l of diesel from the tank (see first post)

I still want to get that diesel tested.

I got a qoute for R750 for this to be tested but did not yet decide on this 1997 Land Rover Defender 110 HT 2.8i
(BMW M52)

2009 Land Rover Defender 110 HT 2.4 TDCi(Puma)
Post #272869 11th Oct 2013 10:02am
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Karoo Rover



Member Since: 30 Jun 2020
Location: Karoo
Posts: 1

South Africa 2012 Defender 110 Puma 2.2 PU Alpine White
Good Day. I am new too this forum and Afrikaans, so please pardon my spelling Sad . I resignedly Have the same problem of my puma not wanting to idle. I have striped the poor beast to the bone and jet could not find the fault. I have taken of the loudbay to asses the fuel pump and see it there is any junk in the tank. nothing, spotless!

I have done all the connectors and replaced the ignition switch. I will now drain the tank and flush the lines and replace the filter. see if that works
Post #840597 30th Jun 2020 8:07am
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