Home > Technical > 2.4 Puma cold starting issues. |
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v8bobber Member Since: 26 Aug 2012 Location: pembrokeshire Posts: 447 |
It may be worth taking the glow plugs out and testing them. Even though the glow plug light may come on on the dash it just means that there’s power getting to them but may not be operating
I seem to remember that I changed mine that they were only £50 for a complete set so just did it as a service item. When I tested the old ones there were only two that still worked which I kept as spares Dave |
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9th Dec 2024 8:33pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20444 |
Could be glow plugs, but if there is any sign of lower power in 5th and 6th then possibly consider VCV replacement. No Guts, No Glory.
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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9th Dec 2024 8:36pm |
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Joshcank Member Since: 09 Dec 2024 Location: Leicestershire Posts: 5 |
Glow plugs have been on the list as a potential next option, just tormented by the threat of them shearing off
The VCV was replaced around 5k miles ago after an intermittent misfire and complete loss of power. Although I have read people having issues with new VCV valves off the shelf. It was replaced for a genuine DENSO part. Injector seals were also replaced at the same time. |
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9th Dec 2024 8:41pm |
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jim4244 Member Since: 13 Apr 2014 Location: Bedfordshire Posts: 803 |
Hi
It may be a fuse or the relay that is causing the problem. The glow plug light will still illuminate on the dash even if the relay is shot. For the sake of £15 I would change out the relay (under the drivers seat) check the 60amp fuse and check the associated 10amp fuse. There was a good trouble shooting guide on the forum which, if I remember correctly, Martin had a great deal of input in. Jim |
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10th Dec 2024 5:02am |
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jim4244 Member Since: 13 Apr 2014 Location: Bedfordshire Posts: 803 |
Here's a photo showing the glow plug relay and 60amp fuse.
https://www.defender2.net/forum/post983848.html Jim |
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10th Dec 2024 5:11am |
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mwestcrew Member Since: 09 Dec 2019 Location: South Warwickshire Posts: 262 |
Just change the glow plugs. Get a set from Empire tuning, they are about £50.
If the haven’t failed, they will. My truck was exactly as you have described, new glow plugs sorted it completely. 2011 130 Utility Body 2005 110 Van |
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10th Dec 2024 6:49am |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17443 |
Mine has done this throughout the time I have owned, it is random and not temperature related, and I have no idea what the cause is. I have over time replaced the battery, starter motor, relays, starter switch, as well as checking that all cables are good and all terminations clean and properly conductive, yet it STILL randomly does it. The effect is exactly as though the battery is dying, however it isn't, and waiting for a short while (about the time it takes to get jump leads and a second battery) and the vehicle will start normally. It is very strange and quite annoying. Sluggish cranking can only really be caused by a fault with the starter or starter circuit, or a partially-seized engine. I don't see how the glow plugs, fuel system (or anything in the fuelling circuit such as the infamous VCV) can have any bearing on sluggish cranking. |
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10th Dec 2024 8:39am |
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MK Member Since: 28 Aug 2008 Location: Santiago Posts: 2420 |
A delay in firing the engine is related to a faulty camshaft position sensor. Check the battery health and its specs are up to the job. Puma 110" SW
............................................................. Earth first. Other planets later |
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10th Dec 2024 11:41am |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20444 |
Makes me wonder if the Crank Position Sensor is the reason for a lot of this.
The trouble is, I’m not keen on replacing parts unless they really need to be. The trouble is with that, a few of these things can give troublesome symptoms but you live with it, rather than how it should be. That’s especially problematic if they don’t produce a DTC, but they aren’t operating as efficiently as they should do. So for example you could have a part, where if it’s not working as efficient as it should be say at 80%, for a long time. It might only trigger a DTC if it reaches 50% efficiency or lower, it could stay just above that threshold or a bit higher as far as what the ECU sees for years. Similar applies to the CHT Sensor as well, if it fails it can run that bit more rich even when up to temp on fuel, there should be a DTC if it fails completely but it’s efficiency could be lacking. You would only be able to tell those with some resistance tests etc depending on the part, but you’d need the new parts to know the readings that you’d expect to see. LR don’t document that, that I am aware of, but new parts, will of course tell you if they are used in the correct way, but again unless installed you won’t always get the real world readings. So depending on which specific part, it isn’t always that easy to see the difference. No Guts, No Glory. 🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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10th Dec 2024 6:31pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17443 |
This ^^^ is not due to the CPS or glow plugs. |
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10th Dec 2024 7:09pm |
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Joshcank Member Since: 09 Dec 2024 Location: Leicestershire Posts: 5 |
This statement sums the problem up perfectly, there seems to be an answer which rules out almost every possible cause. The problem doesn't seem to get any worse, to the point of complete failure, it is just more persistent in cold weather. I'll definitely swap out any relays that are involved in the starter circuit. At just under 90k miles I guess it wouldn't hurt to have a fresh set of plugs anyway as I have no record of them ever being swapped, this will only help the situation. After that I guess its on to the starter motor. I am dubious about swapping the starter motor, as it will spin a red hot engine over without any issue what so ever. All suggestions are very much appreciated. |
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10th Dec 2024 8:05pm |
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blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17443 |
I swapped the starter because the solenoid and the motor were the only things I hadn't changed. It didn't achieve much!
Changing the starter on a 2.4 is not enjoyable. |
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10th Dec 2024 10:45pm |
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custom90 Member Since: 21 Jan 2010 Location: South West, England. Posts: 20444 |
Just getting near the starter isn’t fun, that’s for sure. No Guts, No Glory.
🇬🇧🏴🏴🏴🇮🇪🇺🇸⛽️🛢️⚙️🧰💪 |
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11th Dec 2024 1:24pm |
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spudfan Member Since: 10 Sep 2007 Location: Co Donegal Posts: 4704 |
Get someone else to do it, sit back and watch them do it with a smile on your face! It will come at a cost though..but worth it, especially if do not have access to a lift or a ramp 1982 88" 2.25 diesel
1992 110 200tdi csw -Zikali 2008 110 2.4 tdci csw-Zulu 2011 110 2.4 tdci csw-Masai |
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16th Dec 2024 11:33am |
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