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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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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
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9th Aug 2021 2:32 pm |
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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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hi
electric IS All ok..
IS on second (right, small) turbo actuator to see to move?
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9th Aug 2021 5:36 pm |
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OvalAutos
Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382
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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
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10th Aug 2021 7:33 am |
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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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we dont have vacuum in pipe... how Can we test where is problem
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10th Aug 2021 1:13 pm |
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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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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?
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11th Aug 2021 11:25 am |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6236
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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
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11th Aug 2021 1:36 pm |
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Flack
Member Since: 06 Sep 2006
Location: Preston Lancashire
Posts: 6236
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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
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11th Aug 2021 5:27 pm |
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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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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
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11th Aug 2021 6:22 pm |
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OvalAutos
Member Since: 28 Dec 2018
Location: Cradley Heath
Posts: 382
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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
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13th Aug 2021 11:15 am |
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ycon
Member Since: 03 Jan 2017
Location: Dolné Mladonice
Posts: 8
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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...
thx
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17th Aug 2021 10:24 am |
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