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aspen



Member Since: 30 Jan 2017
Location: Sheffield
Posts: 10

United Kingdom 2005 Range Rover Sport TDV6 HSE Alaska White
Seems to be cross platform. Resonating at 1000 rpm

Hi All

So I’m the past 2 months I have been through a disco 5 - disc sport - another disco 5 - and eventually JLR have swapped it for a brand new RRS HSE 3.0 tdv6.

There were so many issues with the discos that they just downed tools and swapped me out. Now what does that tell you🤷🏼‍♂️

Long storey short one of the issues was, they all had a resonating sound around the 1000 rpm range. Which was horrendous. All of them had it except the disco sport. Actually that was a loaner while they sorted their **** out.

Anyway, after 1500 miles in my new RRS guess what, the same vibration in the same place. (Sounds like it’s left hand middle engine bay coming through the glove box area) only it’s much quieter in the sport inside the cabin due to the sound deadening of course.

Anyone noticed this. It seems it can’t be a coincidence. Also, I really can’t take it back for this as none else notices it you need to become attuned to the car really
I’d love to find it. I’ve done the usual things. Loose pipes and cables, loose sound deadening

Any ideas?

Post #577128 Sat Mar 16 2019 7:16am
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Brit Plumber



Member Since: 05 Jan 2018
Location: Sleaford, Lincolnshire
Posts: 796

England 2012 Range Rover Sport Supercharged Autobiography Fuji White

I wonder if the exhaust or parts of are the same for all the vehicles. I had an annoying rasp which sounded like it emanated from under the passenger seat. Turned out to be in the Autobiography exhaust tip, where the parts were formed together there was a gap. I put a tag weld between the 2 parts and it’s fixed it.

It’s probably nothing like that but it shows how the location of sounds can be misleading. 2012MY RRS 5.0 Supercharged Autobiography (Current)
Mods:
2016 Discovery 4 Mirrors AKA RRS2 (Done)
2014 L405 Surround Camera retro fit (WIP)
2013 RES Dual View Screen fit (Complete)
2016 LR4 RSE (WIP)
67 plate Focus ST Line (Current)
09 Mondeo 2.2 Titanium X Sport (Gone)
1942 VEP Ford GPW Jeep (Willys) (Current)

02 Ford Focus TDCI (Brilliant car sadly scrapped)
99 BMW M3GTII (Amazing car, written off By a Fiat)

Post #577139 Sat Mar 16 2019 8:34am
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aspen



Member Since: 30 Jan 2017
Location: Sheffield
Posts: 10

United Kingdom 2005 Range Rover Sport TDV6 HSE Alaska White

It’s always such a sense of achievement when you find and cure something like this it’s just finding the dam thing 😫

Post #577147 Sat Mar 16 2019 9:13am
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drdelrrs



Member Since: 02 Nov 2010
Location: UK
Posts: 1154

United Kingdom 2012 Range Rover Sport 3.0 TDV6 HSE Lux Orkney Grey

You could try changing the harmonics of the exhaust.

As a test if you have a piece of metal (relatively heavy) strap it firmly to the longest section of the exhaust and see if its enough to change the sympathetic vibration.

You might need try a few times and clamp it to other components. Remember JLR used to have very large weight slung behind the rear wheels because of body panel resonance. You could try taking out the front carpets and see if its worse.

Sympathetic vibrations are a pain with modern unit construction bodies.

The '"C" pillars on the first generation Dicos used to setup strange aerodynamic flows which cause strange sensation at motorway speeds (early Ford Sierra's had same issue).

Post #577163 Sat Mar 16 2019 2:53pm
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