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turbo hoses

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
lasseamager
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Year and Model: volvo 2002 s80 t6
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lasseamager

turbo hoses

Post by lasseamager » Fri May 15, 2020 11:16 am

Hello everyone
I got this " problem " my hoses to tcv ....red and blue. IF the blue is connected to the intake right after the MAF , and the red on top of engine where the two pipes gets to one , THEN i will only get 0,4 bar of pressure BUT if i switch these to ( red and blue ) i can get around 1 bar . why do i only manage to get 0,4 when everything is connected proberbly ? is there something wrong ( obviously there is ) but how can it be ? i pressure checked my wastegate actuators and everything seems fine , did also adjust em .....how do you guys adjust em ??? i have a new tcv on, soo it SHOULD not be that . i noticed that if i do a pcv test, the one with the glove over the oil filler cap , then it dosent get sucked in the engine !!! hope anyone can help me a bit here

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SuperHerman
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SuperHerman

Re: turbo hoses

Post by SuperHerman » Sun May 17, 2020 3:47 pm

Let us start by forgetting about your boost numbers. What is the issue with the vehicle? Any lights or engine codes you can share.

On my XC90 T6 when I reversed the hoses I would get killer boost - thing was a rocket - then it would over boost code. So yes, reversing the hoses will allow more boost - but you could blow your engine. The computer is doing its work in the background.

lasseamager
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Year and Model: volvo 2002 s80 t6
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lasseamager

Re: turbo hoses

Post by lasseamager » Sun May 17, 2020 3:53 pm

I did get overboost . I noticed or...looked at diagram and so, and saw the oneway valve from the " blowoff " was putted the wrong direction. That helped alot BUT the biggest help was switching the brand new tcv out with one i got from scrape. I do need to look at my pcv system though.... i did not have any codes ! Wich i dont understand

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