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Graham_1957

Member Since: 10 Feb 2024
Location: Lancashire
Posts: 2

2011 Defender 110 Puma 2.4 XS CSW Zermatt Silver

2011 Defender 2.4 Puma cranks but will not fire.

I've searched other posts but not found anything quite the same as my situation, so have raised a new thread.

Vehicle is a 2011 Defender 2.4 Puma (UK model)

- It will crank for as long as you like but will not fire up.
- No white smoke from the exhaust during cranking.
- Immobiliser indicator light is out when cranking. Immobiliser/alarm appears to work correctly when key fob pressed, according to behaviour of dashboard indicator light and alarm.
- New glow plugs recently fitted, and they are getting a 12v feed whilst cranking.
- Fuel can be bled with no bubbles from high pressure injector pipes during cranking.
- Engine management yellow warning light is lit whilst cranking.
- No DTC codes are found when read by a generic OBD2 code reader.

Prior to this, the vehicle had been left for two months without running, during which time the vehicle battery went totally flat and the key-fob battery had also failed! I replaced the vehicle battery and also replaced the key-fob battery (and did the recommended procedure to pair the key-fob to the vehicle). I also fitted a priming bulb into the feed from the tank to the filter, to eliminate the possibility of the fuel having leaked back to the tank due to an air leak (but there is no evidence of a leak).

Please could anyone guide me through any further troubleshooting?

Cheers, Graham

10th Feb 2024 10:22am

ickle

Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1782

2008 Defender 110 Puma 2.4 CSW Alpine White

Crank position sensor faulty / wiring failed (rodent damage)?

HTH Keith

10th Feb 2024 12:02pm

landy andy

Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5699

2006 Defender 110 Td5 USW Zermatt Silver

Have you tried to get it fired on a spray of easystart?

That may give you a bit more info on direction of fault.

10th Feb 2024 12:05pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

What’s the situation with the battery now? Perhaps the VCV has gone under, that causes enough problems to do that.

It could be as Ickle mentioned though, but best to check out the things you can do at hone before anything else. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

10th Feb 2024 1:41pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2000

Have you access to a nanocom or IIDTool, I’m wondering if the 10AS needs to be re-synchronised with the engine ECU. It shouldn’t need to be as you can normally disconnect the battery without issues occurring but it’s a simple thing to do with right diagnostics kit.

Ps is your alarm unit a green 10AS ? I’m expecting it to be given you have a 2011 vehicle, however sometimes they have been replaced due to faults and the replacements can be the later Black ALM units, the CH versions can suffer a brownout due to a main battery slowly draining down. Hence my question to discount that issue.

10th Feb 2024 5:52pm

DJow

Member Since: 29 Oct 2023
Location: Yorkshire Dales
Posts: 14

2008 Defender 110 Puma 2.4 CSW Keswick Green

I had a very similar issue where mine would crank enthusiastically but not start. I had a crankshaft sensor error flag up on the reader so i swapped it but still the same. It ended up being the cam sensor. Fit a new one and fired up straight away!

12th Feb 2024 7:02pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Was it hard to change over? $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

12th Feb 2024 7:14pm

DJow

Member Since: 29 Oct 2023
Location: Yorkshire Dales
Posts: 14

2 minute job, 1 screw holding the sensor in place and easy to access. I’ll try find a picture of where it’s located.

12th Feb 2024 7:49pm

DJow

Member Since: 29 Oct 2023
Location: Yorkshire Dales
Posts: 14

Click image to enlarge
Here it is, just above the inlet manifold. The wiring connector was the hardest thing to get off!

12th Feb 2024 8:06pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Excellent, that’s good to know.

I had a look in the parts catalog, they aren’t cheap sensors though are they.

$W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

12th Feb 2024 8:41pm

DJow

Member Since: 29 Oct 2023
Location: Yorkshire Dales
Posts: 14

I seem to remember paying about £30 for a non-geniune sensor a few years ago. Had no issues since.

12th Feb 2024 9:22pm

Ianh

Member Since: 17 Sep 2018
Location: Essex
Posts: 2000

It’s part number LR048186, JLR sell at circa £144, but it’s a well used sensor on a number of vehicles and even a Delphi one is only circa £17 !!!!

12th Feb 2024 10:08pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20359

Indeed I noticed that when I had a quick browse, LR has gone all out with their mark up that’s for sure.

Who do you think the manufacturer LR used?
I’ve always been pretty sure the MAP has been Bosch, the MAF Hella or Ford, on mine I went for the latter. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪

12th Feb 2024 10:49pm

Sparke

Member Since: 29 Dec 2017
Location: Bishop Auckland
Posts: 2

2011 Defender 110 Puma 2.4 HT Alpine White

Re: 2011 Defender 2.4 Puma cranks but will not fire.

Hi Graham, First post or I would have Dm'd, I have the same issue, Crank but not firing. Have y9ou found a resolution? Did the quoted sensor sort it? Thanks in advance. Simon.

Graham_1957 wrote:
I've searched other posts but not found anything quite the same as my situation, so have raised a new thread.

Vehicle is a 2011 Defender 2.4 Puma (UK model)

- It will crank for as long as you like but will not fire up.
- No white smoke from the exhaust during cranking.
- Immobiliser indicator light is out when cranking. Immobiliser/alarm appears to work correctly when key fob pressed, according to behaviour of dashboard indicator light and alarm.
- New glow plugs recently fitted, and they are getting a 12v feed whilst cranking.
- Fuel can be bled with no bubbles from high pressure injector pipes during cranking.
- Engine management yellow warning light is lit whilst cranking.
- No DTC codes are found when read by a generic OBD2 code reader.

Prior to this, the vehicle had been left for two months without running, during which time the vehicle battery went totally flat and the key-fob battery had also failed! I replaced the vehicle battery and also replaced the key-fob battery (and did the recommended procedure to pair the key-fob to the vehicle). I also fitted a priming bulb into the feed from the tank to the filter, to eliminate the possibility of the fuel having leaked back to the tank due to an air leak (but there is no evidence of a leak).

Please could anyone guide me through any further troubleshooting?

Cheers, Graham

17th Feb 2024 6:26pm

Graham_1957

Member Since: 10 Feb 2024
Location: Lancashire
Posts: 2

Thanks to everyone for their input... The problem turned out to be a recognised issue with the factory immobiliser, whereby it just fails - and Landrover put in a fix to the later models to work around this. So my issue was fixed by bridging the two wires behind the instrument cluster to bypass the factory immobiliser.

The thread that describes the solution is

https://www.defender2.net/forum/topic47486-45.html

30th Mar 2024 1:36pm

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