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secondary turbo
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3
secondary turbo

hello

i have a problem, Can you help me?

i replace secondary turbo on RR 2010 3,0 D, becouse behind car was blue smoke. no fail code. in turbo was small amount of oil. now when is replace i have error code p1274-00, p0235-94 and when drive Blink me restricted performance on me, where Can be problem? thx
  
Post #22458549th Aug 2021 1:32 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10336

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

https://www.disco3.co.uk/forum/secondary-t...t=p0235-94


is the actuator free to move?
is the electric plugged in ?
  
Post #22458739th Aug 2021 2:52 pm
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

hi

electric IS All ok..

IS on second (right, small) turbo actuator to see to move?
  
Post #22458849th Aug 2021 4:36 pm
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 

Sounds like you have a vacuum pipe problem. The secondary turbo is vacuum operated and monitored by an electrical sensor on the turbo. When the PCM (Power Control Module) requests extra boost from the secondary turbo, the vacuum pulls the bypass closed to allow the turbo to spin up. If the bypass does not close, the sensor reports it to the PCM and you get those DTCs'.

Now, it could be that if everything is properly connected, you really do have a stuck bypass valve or faulty position sensor.

Check this out....
 Joe  
Post #224591710th Aug 2021 6:33 am
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

we dont have vacuum in pipe... how Can we test where is problem
  
Post #224595210th Aug 2021 12:13 pm
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

ok now we test All electric cables and was ok, All valves IS function, but not vacum going inside.. we test turbo as on video and we have oposite values Ohm.. going from Up to Down, but old turbo and new have same Ohm values.. what now 😔 ? IS somehow test IT on place in garage? when is body on?
  
Post #224605911th Aug 2021 10:25 am
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6224

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

Have you tested the TSOV valve they are known to stick and sieze up, the Valve vacuum is pipe come from the front center of the engine from the small vac chamber, check that this ok as well.

Flack Thumbs Up
  
Post #224607511th Aug 2021 12:36 pm
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

tsov IS ok, IS moving, but in pipe coming to tsov dosent have vacuum..

https://youtube.com/shorts/75TxpaJiJwM?feature=share
  
Post #224608011th Aug 2021 1:07 pm
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Flack
 


Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6224

England 2007 Discovery 3 TDV6 XS Auto Stornoway GreyDiscovery 3

I had a D4 where the back of the vac chamber had a crack in it and it would not create the vac needed to operate the TSOV, remove it check that, if the belts have been done recently then this needs checking.


Flack Thumbs Up
  
Post #224611411th Aug 2021 4:27 pm
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

thx for reply, vac chamer IS ok, IT Has vacum, than pipe IS going to ventil(valve) with 3 conections.. behind it we dont have vaccum, ventil IS ok.. when we add 12v .. system IS going normal, as control modul dosent give him the signal to open it.. and get vaccuum behind it
  
Post #224612211th Aug 2021 5:22 pm
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OvalAutos
 


Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382

United Kingdom 

If it was working before, then you need to trace back on everything you've touched or disturbed.

Like Flack mentioned the vac chamber is critical. Make sure the "T" pipe that connects to it has a good firm engagement. These rubber vac pipes get soft and will weep.

Also worth checking the connection to the vac pump in case it is not clicked in properly.
 Joe  
Post #224637413th Aug 2021 10:15 am
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ycon
 


Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8

Slovakia 2005 Discovery 3 TDV6 SE Manual Unknown ColourDiscovery 3

thanks so much.. problem was in new turbo.. we change it with old and we dont have error code.. today we mount new new turbo from another company and All IS ok.. 5 days gone with diagnositc.. searching All cables and pipes.. 3 times car body on and problém in new turbo... Big Cry

thx
  
Post #224698417th Aug 2021 9:24 am
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