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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
High-pitched whine when driving & clunk on clutch pedal
Hi all

Recently I noticed that there's sort of a high-pitched whine coming from the passenger side of the car when I'm driving. It only occurs at low speeds, and is most noticeable when changing gears.

As soon as I depress the clutch, you hear the whine decreasing, and when stepping on the accelerator again, the whine is back.

It sort of sounds like a muffled air-raid siren, if that makes any sense. Anyone else experience this or know what this is?

There is also a clunk when releasing the clutch pedal, you can only notice it when stationary, whether the engine is running or not.
Post #35519 3rd Jul 2010 8:14am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
anyone Sad
Post #35669 6th Jul 2010 6:48am
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urbanriot



Member Since: 10 Jun 2010
Location: uk
Posts: 19
2008 Defender 90 Puma 2.4 XS CSW Santorini Black
Sounds like a clutch problem ! A Comparison Between Logs and Dogs
Both are very popular at Christmas,
But it is not generally considered cruel to abandon a log,
And dogs are rarely used as fuel.
Post #35672 6th Jul 2010 7:14am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
urbanriot wrote:
Sounds like a clutch problem !


surely if it were a clutch problem, the noise would appear when the clutch is engaged, ie., while changing gears, not when drive in engaged? Question
Post #35674 6th Jul 2010 7:30am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
my local landy specialist tells me it's all normal - the whine is the turbo spooling at low speeds, and the clunck is also normal.

The Td5 did not have these sounds Rolling Eyes
Post #35756 7th Jul 2010 11:30am
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2420
Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Naks wrote:
my local landy specialist tells me it's all normal - the whine is the turbo spooling at low speeds, and the clunck is also normal.

The Td5 did not have these sounds Rolling Eyes


Did you check on turbo“s hose? or perhaps front output bearing. You can take the cubby box out and the plate underneath it and a have a better look. Puma 110" SW

.............................................................
Earth first. Other planets later
Post #35760 7th Jul 2010 11:37am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
MK wrote:
Did you check on turbo“s hose? or perhaps front output bearing. You can take the cubby box out and the plate underneath it and a have a better look.


I wouldn't know what to look for Wink


I trust him, he knows his stuff. The noise only started recently when the engine started loosening up, he says it's normal.
Post #35762 7th Jul 2010 11:39am
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Eduardo



Member Since: 28 Aug 2008
Location: RegiĆ³n Metropolitana
Posts: 2110
Chile 2007 Defender 110 Puma 2.4 SW Stornoway Grey
Naks,

Can you describe better the noise?
As I comment some time ago I had a noise like a slippery belt (quite loudy) that turns to be the turbo inlet manifold seal.

Other possibility that also can be (as MK said) is little perforation in the turbo hose, but the noise is more low pitch (also personal experience)

Cheers Eduardo

MY 2007 110 SW PUMA 2.4: Big Fog of 64'
MY 1994 Jayco 1207 Folding camper: "El Tremendo"

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Post #35772 7th Jul 2010 1:04pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Eduardo wrote:
Can you describe better the noise?


Eduardo, I will try to record it and post it on YouTube.

But the best way I can describe it is it's like a low-pitch air siren from ww2?
Post #35773 7th Jul 2010 1:06pm
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Bad news... the mechanic had a poke at the turbo and he says there's a lot of play in the shaft, and it will not last much longer.

he's never seen this kind of play on a turbo with only 8800km - rarely sees this on Td5's with 180+Kkm on the clock even!

So off it goes to the stealer for a turbo replacement.
Post #35826 8th Jul 2010 7:52am
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CapeLandy



Member Since: 21 Jul 2008
Location: Cape Town
Posts: 558
South Africa 
this would be the Turbo Inlet Seal

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Minus the dust and oil Embarassed
Post #35827 8th Jul 2010 7:57am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
FYI, this is a recording of the whine.

I parked the car and reved it until the whine appeared.

https://docs.google.com/leaf?id=0B0DKxtjT2...&hl=en
Post #35831 8th Jul 2010 8:18am
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Naks



Member Since: 27 Jan 2009
Location: Stellenbosch, ZA
Posts: 2645
South Africa 2010 Defender 90 Puma 2.4 SW Alpine White
Ok, so N1 City says the play on the turbo shaft is within specs, and so is the whine. Spoke to the mechanic who did the work, and he says everything is fine, he found that the handbrake was set too tight and reset it to the correct level. Other than that, they gave it a clean bill of health.

No choice but to believe them and see if the turbo lasts...
Post #36697 21st Jul 2010 1:44pm
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