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Bug



Member Since: 03 Mar 2016
Location: Hayling Island
Posts: 20
United Kingdom 2015 Defender 110 Puma 2.2 USW Corris Grey
1400 rpm rattle
My 64 plate 110 XS Utility 2.2 (175,000 miles) has developed a deep rattle at 1400 rpm when the engine's on load, worse in higher gears. It seems to be coming from underneath the passenger seat/centre of the vehicle around the exhaust area but rattles are well known for reverberating around the body!
2 local independents have not identified the source of the rattle although one took the front prop out and it disappeared - they suggest it needs an extreme angle front prop. I had Terrafirma TF199 suspension fitted last year (heavy duty, standard height) as it's got a winch, an aluminium roof tent, and the back is full of dog cages, load drawer, and SAR kit. It looks like this has raised the ride height a bit, especially at the front but would that be enough to affect the prop? The top of the front wing is 45" from the ground. My other thought - surely the prop is running relative to road speed so why should it be affected by engine speed?
Any thoughts?
Post #1067600 13th May 2025 2:54pm
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Ianh



Member Since: 17 Sep 2018
Location: Essex
Posts: 2383
United Kingdom 
Things to check.
Prop UJ’s , transfer case flange, flange on diff and look in diff to see if the pin has elongated it’s hole in the carrier. You should be able to look at this by removing the fill plug.

See https://www.defender2.net/forum/post909095.html

If it does transpire you need a wider angle prop a double cardan one from gwyn lewis would be the ideal solution.
Post #1067602 13th May 2025 3:35pm
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jbcollier



Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 232
Canada 2009 Defender 110 Puma 2.4 SW Alpine White
First of all, you should not be loading a Puma engine at 1400 rpm. Rock crawling? Ok, sure. Going down the highway? No way. Read your manual. Best operational rpm range is between 2k and 3k. I don’t even need to look at the tach. My engine sound becomes distinctly laboured below 2k. Keep it in its happy place.

Second, they took off the front propshaft and the noise went away. That’s a pretty clear indication to me. Fit a front propshaft with a double-carden joint. If you don’t do much off-road rock crawling, stick with a Terrafirma shaft or similar. The massive Gwyn Lewis shafts are a lot of weight to be spinning at highway speeds.
Post #1067604 13th May 2025 3:52pm
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jim4244



Member Since: 13 Apr 2014
Location: Bedfordshire
Posts: 947
England 2013 Defender 90 Puma 2.2 CSW Fuji White
Hi

Check the simple things first. I had something similar and it ended up being the exhaust touching the removable chassis cross member, Below the gearbox, when revs were applied to the vehicle and vibrating against it.

https://www.defender2.net/forum/topic95130.html

Jim

Last edited by jim4244 on 14th May 2025 8:24am. Edited 1 time in total
Post #1067605 13th May 2025 3:58pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20851
United Kingdom 
Are you sure it isn’t gearstick weights vibrating or turbo heat shield ? _\Hennessey|Venom| F5/___
___\⭐️Lone|Star|State/___
____\We|Will|Win/___
____/🇬🇧🇺🇸\____
_//*⛽️🛢️⚙️🧰*\\_
Post #1067611 13th May 2025 5:13pm
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Johan_B



Member Since: 20 Sep 2024
Location: Gothenburg
Posts: 94
Sweden 2008 Defender 110 Puma 2.4 CSW Tonga Green
If it is only and distinctly at 1400 rpm I would pick up on your last thought, that the prop is road speed dependent and not engine speed. It might be a fluke that the rattle went away when the front prop was removed, or it could have an effect on the problem with its weight or torque on other components, such as what Jim describes, but not be the cause of it.

Also as jb says, don't drive it with high load in that range, I know it's sometimes easier said than done since, at least for me, it feels ridiculous to rev it high enough to avoid that in uphill gear shifting for example. But I try.
Post #1067664 14th May 2025 10:52am
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irishhawk11



Member Since: 07 Mar 2022
Location: Feldkirch
Posts: 13
Austria 2011 Defender 90 Puma 2.4 HT Santorini Black
I once had a issue that the turbo heat shield carrier was cracked through at the front which caused a rpm related high pitch rattle/vibration noise.
Post #1067668 14th May 2025 11:15am
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Scotm



Member Since: 28 Feb 2014
Location: Aberdeenshire
Posts: 686
Scotland 2012 Defender 110 Puma 2.2 SW Orkney Grey
A rattle I had was due to loose bolts on the bracket that holds the dpf to the block. They used to come loose until a bit of thread lock was applied.
Post #1067699 14th May 2025 3:16pm
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