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Discussion Starter #1
Hello,

I bought a RRS of 2005 2.7tdv6.
I have a little issue, when driving I hear a rustling noise underneath the car. The noise is not really loud but it is very well noiticeable.
It looks like it comes from the gearbox or transfer case or differentials.
It doesn't always make the sound, sometimes it does and sometimes it doesn't. If I 'play' with the gas pedal I can control the noise, I can make the noise happen and I can make the noise stop.
He doesn't do it when driving real slow, but he starts doing it from like 40 km/h and up.
The noise doesn't specific happen while shifting gears, it just happens randomly.
I also tried shifting in manual but when the car is shifting the noise doesn't happen.
I also tried to put my car in neutral while driving, than the car DOES NOT make the noise.
I don't feel anything wrong about this car, it drives great, it's only the noise is annoying.

A mechanic took a look at my car and he told me the gearbox, transfer case and differentials all were in great condition, he says nothing is wrong with the car. So what is this noise?

I hope anyone can give some good advice, I tried to google this problem but cant find anything about it...

greetings WS
 

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Discussion Starter #2
My mechanic tried changing the fluids of both differentials but the noise is still there...
 

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Premium Member
2006-2009 Range Rover Sport
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517 Posts
Check your drive shaft to see if the center bearing is shot. If so it may be spinning. Mine was very bad bit not totally separated. I put some hose in there until I could replace it.
 

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Discussion Starter #4
Thanks for the answer, I don't think this is the issue beccause I placed a whole new cardan shaft last week and the noise is still there.
 

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Discussion Starter #5
Hello guys,
I noticed when I start the car when the car is cold, than it's as quiet as a mice for like 3-4 minutes after starting. After those 3-4 mins than suddenly the car starts making that noise and it won't stop. Then I tried shutting down the car and starting it again ( now the car is hot ) , than the noise starts immediately. So I think the temperature of the car has something to do with it .

Also my mechanic said ( like i posted before in this thread ) that my diff's, transfer case and gearbox are in good condition but he only checked the fluids (on dirt etc.) so he might be wrong.

Greetings
 

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LEGACY VENDOR
2006-2009 Range Rover Sport
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808 Posts
Couple of suggestions:

1. Make sure all exhaust couplers/bolts are tight;

2. Make sure you don't have parts of the catalytic converter that are rattling around internally.
 

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2006-2009 Range Rover Sport
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517 Posts
Also check all your heat shields.
 

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Thanks guys, I dont have a catalitic convertor under my car and I can’t find any loose bolt or windshield.. I think it must be something wrong in the transfer case, is this possible?
 

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it is not your windshield that comes loose. It is the top or side trims. Unless you duct tape them to the windscreen, and take it for a drive, you can not rules these out.
 

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Discussion Starter #10
it is not your windshield that comes loose. It is the top or side trims. Unless you duct tape them to the windscreen, and take it for a drive, you can not rules these out.
Thanks for your reply.
I didn't mean windshield , I meant heatshield, sorry my fault =p.
But I think it has nothing to do with heatshields or loose bolts beccause that doesn't match with the symptoms:
- the first minutes after starting the car (when it's cold) the noise does not happen
- the noise is random, sometimes it's there and sometimes its not but most of the times it happens when releasing gas
- I can make the noise happen and I can make it stop when 'playing' with the gas pedal
- It also does not really sound like a loose bolt or heatshield


greeting
 

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2006-2009 Range Rover Sport
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Sounds like some kind of valve in the exhaust or intake system.
This forum is mostly gasoline RRS's but there are other forums that are British that have a lot of diesel powered Sports.
 

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Discussion Starter #12
Sounds like some kind of valve in the exhaust or intake system.
This forum is mostly gasoline RRS's but there are other forums that are British that have a lot of diesel powered Sports.
Thanks for your answer. I don’t think this can be the problem because it doesn’t happen in neutral. If it was due to valve in exhaust or intake system than wouldn’t it also make noise in neutral? Correct me if I am wrong.

Greetings
 

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2006-2009 Range Rover Sport
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Can we get a video or sound bite? Best way i found what was wrong under the truck was my gopro.
 

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Discussion Starter #14
Can we get a video or sound bite? Best way i found what was wrong under the truck was my gopro.
I tried that but on the vid I couldn’t hear anything. I might try making a vid underneath the car. Greetings
 

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Discussion Starter #15
Hello,

The problem is still not fixed.
Could the transmission oil be the problem? I drove for a while and took a look at the dipstick.
I noticed some small bubbles on it (look at the picture), could this be the problem?? The transmission oil has been changed half a year ago by the previous owner, maybe overfilled?.
transmissionfluid.jpg

greetings WS
 

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Discussion Starter #16
Hello,

Problem still not fixed, got a refurbished torque convertor but this didn't fix it.
aftert that I got a refurbished gearbox, this also didn't fix it..
:-? Is there really nobody that knows this problem??

Greets
 

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Premium Member
2006-2009 Range Rover Sport
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517 Posts
reviewing this thread I'm wondering if the noise is related to engine position. That is, when you accelerate the engine moves and may then cause rubbing on a drive shaft or something. when you rev the engine in neutral no engine torque so no engine movement. maybe you have a bad engine or transmission mount. I still say try to mount a GoPro or some kind of camera under the truck while test this. It may show something interesting.
 

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Discussion Starter #18
I also noticed that when I drive a constant speed in 4th gear than no noise occurs, but when I shift to 5th gear the same grinding noise also occurs and won't stop until I touch the brake or throttle, and if I do than it's gone for some seconds and it comes back.. So is it still possible to be engine mounts ? I think it must have something to do with gears, the engine mounts don't know what gear I am driving in..

EDIT : also btw, this noise starts happening when I drive the car (cold) for like 3-5 minutes, it does not start immediately after starting the car. And this ain't cooincidence imo. So it looks like some oil has to warm up a little bit or something, but how can oil warm up in only a couple of minutes :think:.
I also forgot to mention when it happens, the rpms surge a little bit, like 100-200 rpm.

Greetings
 

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2006-2009 Range Rover Sport
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517 Posts
Ok so maybe it is the transmission. That takes a few minutes to draw all the fluid up into the trans and maybe The previous owner missed something when changing the fluid. It mak be timeto have a trans shop look at it.
 

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Discussion Starter #20
Well, I got just a refurbished tranny and the problem is still there...
 
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