 | Home > Puma (Tdci) > Puma 2.4 conked our now won’t start |
 
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| Blue Member Since: 13 Aug 2019 Location: UK Posts: 43  
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Hi Mat,
I had a similar issue to you; checked everything you have listed (made sure the starter was functioning correctly too) also replaced the fuel filter without getting it started. Due to lack of diagnostic software, I had to concede and took to the local diesel specialist, and they found it was the VCV at fault - may point you in the right direction? This also remedied a smokey cold start I had, did you have have this symptom before your problem? Best of luck! |
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12th Oct 2019 3:58pm |
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| mata Member Since: 24 Jan 2014 Location: Manchester Posts: 153  
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Hi Blue, thanks for your reply.
I know the VCV is easily damaged by water in the fuel. I’ve replaced mine twice now, once with a pattern part that failed after a couple of years then more recently with a genuine denso one. Both times symptoms were rough idle hesitation when getting on the gas,for example when pulling out of a junction - I think more pronounced when the engine was cold. Did yours just suddenly stop running and then not stat despite cranking over (like I described above) or did you have other engine running issues before it stopped starting? Cheers, Mat. |
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12th Oct 2019 4:28pm |
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| Caterham Member Since: 06 Nov 2008 Location: Birmingham Posts: 6298  
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this might be a red herring but if you've had a dodgy speedo my guess would be the connection at the rear of the speedo binnacle is loose. my understanding is this is key to the entire ecm / electronics sysstems and if it's now become disconnected my understanding is it won't start for love nor money until reconnected.
I'm sure someone with more knowledge with be along soon to confirm or otherwise. good luck. |
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13th Oct 2019 2:04pm |
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| Blue Member Since: 13 Aug 2019 Location: UK Posts: 43
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The penultimate start before the issue was definitely strained, I incorrectly dismissed it as a battery problem. |
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13th Oct 2019 4:31pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6605 
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If the instrument pack wasn’t connected you wouldn’t get cranking.
Is the instrument pack reading correctly before you start cranking - is the temperature gauge reading ok and the glow and MIL operate correctly?  1988 90 Td5 NAS soft top
2015 D90 XS SW |
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13th Oct 2019 5:15pm |
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| bear100 Member Since: 22 Mar 2010 Location: South Wales Posts: 1917  
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Had a very similar issue myself, but the give away for me was the temperature gauge rising when cold, had the same symptoms as you and it turned out to be the cylinder head temperature sensor
A little tricky to change I am pretty sure I sliced a notch out of a spare socket to help but still certainly a DIY job and quite cheap
A nice easy one to check but make sure it’s been sat and cold for a while  2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI 2010 Range Rover Sport TDV8 (gone) 2007 Discovery HSE TDV6 (gone) 1993 110 csw 200 tdi (gone) 1994 90 HT 300 tdi (gone) 1994 discovery 300tdi (gone) 90 hybrid 3.5 v8 (gone) Range rover bobtail 3.5 v8 (gone) |
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13th Oct 2019 5:43pm |
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| HardCharger Member Since: 03 Mar 2013 Location: Manila Posts: 737  
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If you've had water in the system, change out the VCV for good measure.
I also encounter the rough engine with hesitation before going dead then would just crank and not fire. If you have the priming tool, re-prime the fuel system. It's what I did when mine when it did all this followed by a new VCV. Also check that your fuel filter is fit on snug and not wobbling even when tight. Also check the connections on your instrument cluster as well. |
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14th Oct 2019 2:20am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17391 
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As above, if you have the slightest reason even to suspect water (or the diesel bug, which will follow water) in the fuel, then purge the system of water and dirty fuel, flush clean fuel through the pipes, and replace the VCV as a matter of routine.
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14th Oct 2019 7:56am |
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| custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20382
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How do you un-clip the IPAC? The clip is partially broken on mine and I have no idea why, or how it was.
I think it has by its self, as I'm not aware of anyone touching it.  $W33T $0U7H3RN $UG4R
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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14th Oct 2019 10:23am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6605
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I posted pics here: https://www.defender2.net/forum/topic64947.html
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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14th Oct 2019 10:51am |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6605
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I can supply a replacement housing/latch part if you need - the right hand part of this: https://www.disco3.co.uk/shop/defender-pum...0-p86.html
1988 90 Td5 NAS soft top
2015 D90 XS SW |
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14th Oct 2019 10:53am |
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| mata Member Since: 24 Jan 2014 Location: Manchester Posts: 153
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Hi All, thanks for your replies, I’ve not been getting email notification so hadn’t seen them until now.
I got a tow off Rassay and on to Skye with another defender, much to the delight of the lads operating the ferry who all run landcruisers! A local mechanic is not on it in his spare time and believes the first place to look if fuel due to how much water came off the bottom of the fuel filter. Regarding the IPAC, it’s been working fine other than the intermittent speedo. The connector on the back is solid, positive and undamaged. There was on one occasion whilst trying to start the engine after the conk-out a full red reading from the temp gauge which hasn’t returned. This steered me to check all fuses and relay connections which appeared good. I checked the relays were clicking over with ignition switch use and I swapped the back relays over. I believe the local mechanic is sourcing a priming tool and that’s his next move, I’ll suggest we put a new VCV on it as you’ve suggested. Fingers crossed, thanks again. |
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17th Oct 2019 7:32am |
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| mata Member Since: 24 Jan 2014 Location: Manchester Posts: 153
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The saga continues...
Local mechanic re-primed the fuel system and reported that their was no sign of water in the fuel system. He was injecting fuel into the pump and confirmed it coming out of the return line. At that point he gave up so i had the vehicle recovered to my local garage back home where its now been for a week. An auto electrician came to look at it yesterday and drew a blank, he thinks that it's 'something mechanical' and gave up... My next thought its to get hold of a tool that can disable the factory immobilizer, to rule that out. |
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29th Oct 2019 10:02am |
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| mata Member Since: 24 Jan 2014 Location: Manchester Posts: 153
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Shes alive...ALIVE
Recon fuel pump from PF Jones fitted today and i've seen a video of the engine running! So there we go, with no warning what so ever, the fuel pump died over five weeks ago. Question now is was that just old age (10 years - 147,000 miles) or could a bad batch of fuel or contaminated fuel have seen it off? Plan now is to drain the tank and inspect what comes out, change the fuel filter and check the fuel lines for any leaks where  could be getting sucked in. Love to hear anyones wisdom on that. Also considering fitting an under-bonet additional filter, but perhaps thats overkill?
Thanks. And hurrah! |
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18th Nov 2019 8:10pm |
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