My 2010 L322 SC makes no odd noises when wheels are pointed ahead, but the slightest turn in either direction while under a bit of load and there is this odd thump-thump-thump sound that can be heard (sounds and FEELS a bit like going over a small speed bump fast) if I turn the wheel more, the thumping goes faster. But feels like it’s coming from the back. I’ve recently had an independent LR SHOP replace all front control arms and all ball joints. Which resolved some other clunks and play. But this was happening before and after all this work.

Last thing I’d add is that while 80% of the time it’s reproducible, some days it just doesn’t happen and I can’t pinpoint what is different about those days. (Not temperature or humidity based for example)

The truck drives great apart from this.

My guess is half-shaft u-joints or gearbox given how it comes on with turning but what do you think?

My guess would be drive shaft CV joints....

Any decent garage should be able to find the issue, nothing special that needs the main dealer to find...  Pete

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2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

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Last edited by Phoenix on 23rd Dec 2023 10:30pm. Edited 1 time in total

Haylands wrote:

My guess would be drive shaft CV joints....

Any decent garage should be able to find the issue, nothing special that needs the main dealer to find...

Phoenix wrote:

Could be transfer box locked up, try shifting from high to low & back again a few times.
It happens occasionally even though the lock %age is variable, sometimes the actuator needs a kick up the backside.

Check your tire pressures. I have experienced this on 3 different L322's and a couple of Discovery 4's and in every case, correcting the tire pressures solved the problem.

In my case, the slightly different wheel speeds due to differing pressures was enough to trigger the thumping. On one of the vehicles I had to alter the factory recommended pressures slightly on one axle to stop the noise. So if the pressures are definitely correct according to the book, try lowering the pressures by a couple of PSI on the front OR the rear only. If that doesn't work, try increasing it by a couple.

The correct pressures for normal loads are front 33 psi and rear 36 psi.

Quote:

heck your tire pressures. I have experienced this on 3 different L322's and a couple of Discovery 4's and in every case, correcting the tire pressures solved the problem.

In my case, the slightly different wheel speeds due to differing pressures was enough to trigger the thumping. On one of the vehicles I had to alter the factory recommended pressures slightly on one axle to stop the noise. So if the pressures are definitely correct according to the book, try lowering the pressures by a couple of PSI on the front OR the rear only. If that doesn't work, try increasing it by a couple.

The correct pressures for normal loads are front 33 psi and rear 36 psi.

Desper wrote:

Phoenix wrote:

Could be transfer box locked up, try shifting from high to low & back again a few times.
It happens occasionally even though the lock %age is variable, sometimes the actuator needs a kick up the backside.

interesting, I'll play with that!

FYI, I finally got the truck to make the noise for the LR indy mechanic and he said it sounded like rear diff. He took the truck and flushed/replaced the diff and gearbox fluids a few times (which where contaminated and gross) and then updated the software. since then it's been good(crossfingers). Will update if it comes back.

edit: 2 months in... seems fixed.