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Boost Valve changover noise
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LIAMMCL
 


Member Since: 27 Aug 2013
Location: Northumberland
Posts: 196

England 2009 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4
Boost Valve changover noise

I recently towed someone else's caravan so for the first mile or so on country roads I had the windows open to listen for clunks etc.

There were a couple of hills to climb and the engine was working reasonably hard.

What I heard shocked me as in 4 years I've never heard it before. It was like a dump valve from a modified 90's ford rs turbo. The noise was obviously during the changeover to the second turbo but it was a really loud ''PTSSSHHH" noise.

I'm hoping its normal?
  
Post #186030022nd Sep 2017 9:45 am
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Saense
 


Member Since: 30 Sep 2016
Location: London
Posts: 30

United Kingdom 

Mine does it occasionally too, wouldn't worry about it, hoping it's normal as well Laughing
  
Post #187042220th Oct 2017 8:07 am
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Flack
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Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 4778

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

That sounds like you have a sticking TSOV valve, if its 2500 rpm and is it from the drivers side of the car ?.

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Post #187043020th Oct 2017 8:33 am
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LIAMMCL
 


Member Since: 27 Aug 2013
Location: Northumberland
Posts: 196

England 2009 Discovery 4 3.0 TDV6 HSE Auto Nara BronzeDiscovery 4

Sounds like it, yes drivers side. I wondering if it coincides with the 'supercharger' type whining noise which comes and goes through the boost stages.
  
Post #187046120th Oct 2017 10:12 am
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