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FRED110



Member Since: 29 May 2025
Location: GUADELOUPE ISLAND
Posts: 4
France 2010 Defender 110 Puma 2.4 HCPU Pennine Grey
" DEFENDER PUMA 2.4 Power Loss and Injectors problem
Hello everyone,

I own a 2010 Land Rover Defender Puma. Recently, I encountered an issue while driving. After about 30 minutes on the road, I experienced a loss of power, and the injectors started making a loud clacking noise. Despite this, I managed to drive a few kilometers at idle speed before having to stop and get the vehicle towed.

Once I got home, I noticed that the battery was completely dead. I installed a new battery, and since then, the vehicle seems to be functioning normally. As a precaution, I tested the alternator with the engine running, and it provides 13.5 volts.

I believe this issue could be related to the electrical system and may have affected the vehicle’s electronic systems, including injector management.

What do you think? Is this voltage normal for the alternator, or should I suspect an underlying issue? Your feedback and advice would be greatly appreciated!

Thank you in advance for your help.
Post #1070335 26th Jun 2025 2:49am
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BrickBox



Member Since: 05 Oct 2021
Location: Wales
Posts: 1009
Wales 2008 Defender 110 Puma 2.4 USW Zermatt Silver
Sounds like you solved the problem with a new battery. 2008 2.4 110 Utility Station Wagon XS.
Post #1070336 26th Jun 2025 3:12am
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20919
United Kingdom 

Click image to enlarge

The above is at rest, but with Alternator Charging current is at the slightly lower end of what would be expected. Is the voltage whilst running stable or relatively.
You shouldn’t really see too much more than 200mV / 0.2v each way fluctuation at idle. ____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_
Post #1070363 26th Jun 2025 2:31pm
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FRED110



Member Since: 29 May 2025
Location: GUADELOUPE ISLAND
Posts: 4
France 2010 Defender 110 Puma 2.4 HCPU Pennine Grey

Click image to enlarge
Thanks for the info, guys.

I just want to point out that I’ve been driving a Defender since I was tall enough to reach the pedals, but this is the first time something like this has ever happened to me. I’ll repeat the experience to make sure I didn’t imagine it.

I left home and drove 20 minutes for 17 km.

I stopped for 30 minutes.

I restarted the car without any issue and hit the road again.

After 5 minutes, I started to feel a loss of power—mild at first, but it quickly got worse.

The loss of power became so severe that I had to stop. The engine was barely running, and the injectors were making a loud clacking noise.

I turned off the engine, but after that, it wouldn’t restart: there were no dashboard lights at all.

I checked the relays and fuses, but nothing seemed out of place.

Finally, the tow truck brought me home. Once I got there, I installed a new battery, and everything started working again as if nothing had happened.

It’s truly incredible—I never would have thought a dead battery could cause a scenario like this.



I will continue investigating to see if a grounding issue might be the cause of this battery problem.

It’s all to help our Land Rover community! And if anyone ever visits Guadeloupe, I’d be happy to meet up.

See you soon, friends, and don’t hesitate to share your thoughts. In the meantime, cheers to your health!
Post #1070365 26th Jun 2025 3:03pm
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90 Dreamer



Member Since: 13 Jul 2019
Location: Oop North
Posts: 2260
United Kingdom 2016 Defender 90 Puma 2.2 HT Corris Grey
sounds like you had a totally dead cell that was not allowing the current from the alternator to recharge the battery........
Post #1070369 26th Jun 2025 4:08pm
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FRED110



Member Since: 29 May 2025
Location: GUADELOUPE ISLAND
Posts: 4
France 2010 Defender 110 Puma 2.4 HCPU Pennine Grey
Here in Guadeloupe, it’s incredibly hot, and the salty sea air is tough on everything. So, anything is possible!
Post #1070372 26th Jun 2025 4:29pm
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