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Need Help and Advice Turbo lag
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Gazza5555
 


Member Since: 29 May 2023
Location: kings lynn
Posts: 36

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4
Need Help and Advice Turbo lag

Can some more experienced on hear help me, my car over the last year had developed a very bad turbo lag. yesterday pulling out of a roundabout I put my foot down and the delay was very bad even dangerous is there anything I can do to make this go away or at least improve It. What do you all think?

D4 2015 3.0 v6 it has covered 85,000
 Discovery 4 2015 HSE Lux Gauseway Grey  
Post #237187726th Jun 2024 6:36 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6311

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

A few things, check if its been egr'd blanked and that the butterfly valve has been removed, check the Turbo actuator rod is not seized up, clean the Maff sensor and also get a remap on the PCM.

Flack Thumbs Up
  
Post #237188026th Jun 2024 7:44 am
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disco chris
 


Member Since: 25 Apr 2022
Location: London
Posts: 292

United Kingdom 2005 Discovery 3 TDV6 HSE Auto Buckingham BlueDiscovery 3

I had a similar issue pulling onto roundabouts and junctions and it was completely resolved when I cleaned the MAP sensor. 5 minute job and costs nothing so worth a try.

Have a read of the below thread (if you haven't tried cleaning your MAP sensor already).

https://www.disco3.co.uk/forum/go-clean-ma...MAP+sensor
  
Post #237188126th Jun 2024 7:59 am
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Gazza5555
 


Member Since: 29 May 2023
Location: kings lynn
Posts: 36

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Thanks very much Chris, yes I have cleaned the Map sensor
 Discovery 4 2015 HSE Lux Gauseway Grey  
Post #237188626th Jun 2024 9:11 am
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Gazza5555
 


Member Since: 29 May 2023
Location: kings lynn
Posts: 36

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Hi Flack, is it a simple job to check the Turbo actuator rod is not seized up?

egr has not been blanked
 Discovery 4 2015 HSE Lux Gauseway Grey  
Post #237188726th Jun 2024 9:15 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6311

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

With it being a D4 you need to check the TSOV valve is not stuck, its on the drivers side and is just behind the radiator, its a common thing on the D4. The linkage seize up, its driven by a vacuum pipe from a chamber at the front of the engine.
You need to remove the big pipe and valve to check its working.

Check this thread out

https://www.disco3.co.uk/forum/sticky-tsov...light=TSOV

Flack Thumbs Up
  
Post #237196327th Jun 2024 8:52 am
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Gazza5555
 


Member Since: 29 May 2023
Location: kings lynn
Posts: 36

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Thank you will do that now
 Discovery 4 2015 HSE Lux Gauseway Grey  
Post #237198027th Jun 2024 2:29 pm
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sub
 


Member Since: 04 Jul 2022
Location: Cheshire
Posts: 100

United Kingdom 2016 Discovery 4 3.0 SDV6 Graphite LE Auto Waitomo GreyDiscovery 4

dupe
  
Post #237199327th Jun 2024 7:09 pm
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Gazza5555
 


Member Since: 29 May 2023
Location: kings lynn
Posts: 36

United Kingdom 2015 Discovery 4 3.0 SDV6 HSE Lux Auto Causeway GreyDiscovery 4

Well thanks for all the help, I have today taken off the cover and found the Turbo actuator rod, it all looks good and free , but I put a lot of WD 40 on and lets see what happens Thumbs Up
 Discovery 4 2015 HSE Lux Gauseway Grey  
Post #237208829th Jun 2024 11:37 am
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