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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4206

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
Puma earth straps
Is their list of the main earth locations on a Puma anywhere? Are they obvious if I crawl underneath? I’m having some occasional no start problems. 2007 110 TDCi Station Wagon XS
Post #1036860 8th Jun 2024 6:04pm
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Iktank



Member Since: 08 Nov 2014
Location: Porthcawl
Posts: 237

Wales 2014 Defender 90 Puma 2.2 SW Corris Grey
Clean up the earth that connects to the transfer box, even if it looks ok clean it up Smile

Last edited by Iktank on 9th Jun 2024 5:42pm. Edited 1 time in total
Post #1036862 8th Jun 2024 6:35pm
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Zed



Member Since: 07 Oct 2017
Location: In the woods
Posts: 3278

United Kingdom 2010 Defender 110 Puma 2.4 XS CSW Santorini Black
This earth does seem to cause a few issues. Is there an improved connector or method available? WARNING.
This post may contain sarcasm.
Post #1036871 8th Jun 2024 8:21pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20339

United Kingdom 
Basically it’s exposed to extreme conditions, extreme vibration, moisture, temperature changes and the most likely culprit is during any transmission work such as a clutch change it gets whipped off, and then screwed back on in a rush often at the end of a job.
It can then be dirty, not tightened up enough and things like that. Probably considering it’s quite a big job to change the clutch fatigue sets in and sometimes it just gets nipped up the nut on the thread or even left hand tight as I unfortunately experienced once.
And that can cause the most strange issues such as indicate left, right indicator comes on.
Hazard lights flash the entire dash lights, all due to the poor earth distribution via multiple circuits and voltage leakage.

It’s a quite resilient design really, it’s just when it gets worked on and all electrical connections can degrade over time, especially those in harsh conditions. $W33T $0U7H3RN $UG4R
🇬🇧🏴󠁧󠁢󠁥󠁮󠁧󠁿🏴󠁧󠁢󠁷󠁬󠁳󠁿🏴󠁧󠁢󠁳󠁣󠁴󠁿🇮🇪🇺🇸⛽️🛢️⚙️🧰💪
Post #1036873 8th Jun 2024 8:42pm
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andy63



Member Since: 30 Jun 2023
Location: north east
Posts: 513

United Kingdom 
Re: Puma earth straps
Bluest wrote:
Is their list of the main earth locations on a Puma anywhere? Are they obvious if I crawl underneath? I’m having some occasional no start problems.


No list as such but from doing a few jobs I've noticed these..
The battery main earth cable has a bolted connection to the transfare box.. That same cable has a another spliced connection that has a bolted (I think) connection to the main chassis box section..
On the opposite (drivers side) I have a couple of earth connections on to the side of the transfare box..
And finally at the rear of the drivers side front wheel arch I have an earth strap from body work to chassis..
There is also a multiple earthing point on the bulkhead in the engine compartment which should be easily spotted..
That's all that come to mind.. But I'm sure there will be many more points around the vehicle for lights etc..
Post #1036881 9th Jun 2024 6:21am
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macfrank



Member Since: 05 Nov 2015
Location: somewhere in the north
Posts: 1073

Germany 2015 Defender 110 Puma 2.2 SW Keswick Green
Here‘s an abstract diagram of all earth points https://www.defender2.net/forum/topic70711.html
Post #1036885 9th Jun 2024 7:25am
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Millerdark



Member Since: 16 Sep 2015
Location: Berkshire
Posts: 25

United Kingdom 2010 Defender 90 Puma 2.4 XS CSW Fuji White
Can you describe the starting problem in more detail. How do you eventually start it, when it does not start?
Post #1036959 9th Jun 2024 5:23pm
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 4206

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black
After the car has been sat a while, a few days or weeks, not exactly sure, the problem occurs. Turn the key and nothing happens other than a click. This might repeat 2 or 3 times then it bursts into like as normal.

Alway kept on a CTek, I always let the glow plug light go out. Issue doesn't seem to occur if it's been used recently. 2007 110 TDCi Station Wagon XS
Post #1036966 9th Jun 2024 6:20pm
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