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  1. #1
    Join Date
    Sep 2007
    Location
    Pretoria, South Africa
    Posts
    318

    Default TCV Installation

    I just took delivery of an IPD TCV ... with the 7' silicone hose. I believe the "bottom" hose is the difficult one to replace. Is anyone who has done it willing to share some "how to" and "watch out for" experiences please? A photo or two, maybe?

    Thanks!
    Pierre

    2016 V40 D4 AT
    2010 XC60 3.0T AT
    2004 Mazda Miata 1.8 - My new toy and restoration project ... Not everything you do in life has to be rational!

    Gone: 2015 V40 D3 AT, 2002 V70XC 2.4T AT, 2007 S60 2.5T Manual, 2004 S60 2.0T Manual, 1996 850 GLT Manual

  2. #2
    Join Date
    Mar 2005
    Location
    Pacific Northwest
    Posts
    1,927

    Default

    Quote Originally Posted by PierreC View Post
    I just took delivery of an IPD TCV ... with the 7' silicone hose. I believe the "bottom" hose is the difficult one to replace. Is anyone who has done it willing to share some "how to" and "watch out for" experiences please? A photo or two, maybe?

    Thanks!
    You will get performance just by replacing the top 2 hoses. Worked for both my 01 T5 and 01 V70XC.

    Strangely enough, just replacing TCV without the 2 top hoses yields no performance gain.
    Past Volvos : 01 V70 T5, 01/02 V70XC, 02 V70 NA, 00 V70XC
    Current EV/Hybrid : 13 Tesla S85, 11 Gen3 Prius
    Friends cars under my care 17 Audi A4 Quattro DSG (B9) 05 Audi A4 Manual 6sp Quattro (B7) 04 e320 V6 Auto, 05 Accord 2.4, 08 Element 2.4, 08 Camry Hybrid
    Past Others : 01/03 VW MK4 Turbo/NA/01M. Gen1 Prius, Gen1 CRV, Gen2 Rav4, 02 Town&Country, 06 Corolla, 12 Audi A4 Quattro (B8), 07 Civic 1.6
    https://sites.google.com/view/howardsvolvos

  3. #3
    Join Date
    Jan 2009
    Location
    Nebraska
    Posts
    1,442

    Default

    Quote Originally Posted by PierreC View Post
    I just took delivery of an IPD TCV ... with the 7' silicone hose. I believe the "bottom" hose is the difficult one to replace. Is anyone who has done it willing to share some "how to" and "watch out for" experiences please? A photo or two, maybe?

    Thanks!
    It's actually not all that difficult, I probably swore only 4 times, a lot less than that time I took the B4 servo cover off! Just remove the upper engine mount to gain better access to the turbo. I found it was easier to remove the clip for the lower hose from underneath the car, just grab it with the pliers and slide it up. Then you can pull the hose off from above. Replacing the hose can be done entirely from above.

  4. #4
    Join Date
    Sep 2007
    Location
    Pretoria, South Africa
    Posts
    318

    Default TCV hose replacement

    OK - so the "yellow" hose is easy ... but it seems that I will have to remove the air duct pipe between the air cleaner housing end the turbo to reach the bottom of the "blue" hose ...

    Is this the only way or is there another way? Or a special tool that can reach in the narrow space?
    Pierre

    2016 V40 D4 AT
    2010 XC60 3.0T AT
    2004 Mazda Miata 1.8 - My new toy and restoration project ... Not everything you do in life has to be rational!

    Gone: 2015 V40 D3 AT, 2002 V70XC 2.4T AT, 2007 S60 2.5T Manual, 2004 S60 2.0T Manual, 1996 850 GLT Manual

  5. #5
    Join Date
    Jan 2010
    Location
    Sarasota, FL
    Posts
    447

    Default

    the top two hoses, the green and blue can be replaced from the top without removing the intake pipe to the turbo.

    Put the car on ramps and is easier that way.

    The red(bottom) one is easier to get to it if you remove the clamp/hose from below, then attach new hose from above and place clamp over connection from below.
    John, '01 V70 T5
    '04 V70 2.5T

  6. #6
    Join Date
    Sep 2007
    Location
    Pretoria, South Africa
    Posts
    318

    Default Performance improvement

    I finally installed the IPD TCV ... including all three hoses!

    Immediate difference is an almost total elimination of turbo lag, which had become very noticeable and frustrating lately. Power delivery is also faster and smoother ...

    Well worth the $$ and EFFORT!

    Pierre
    Pierre

    2016 V40 D4 AT
    2010 XC60 3.0T AT
    2004 Mazda Miata 1.8 - My new toy and restoration project ... Not everything you do in life has to be rational!

    Gone: 2015 V40 D3 AT, 2002 V70XC 2.4T AT, 2007 S60 2.5T Manual, 2004 S60 2.0T Manual, 1996 850 GLT Manual

  7. #7
    Join Date
    Oct 2009
    Location
    Australia
    Posts
    1,439

    Default

    Im yet to connect the third one (bottom hose) and am already satisfied. Pierre, did you notice any difference by doing the third?

  8. #8
    Join Date
    Sep 2007
    Location
    Pretoria, South Africa
    Posts
    318

    Default Bottom Hose

    @ OceanRacer: Don't know as I did it all simultaneously ...

    Pierre
    Pierre

    2016 V40 D4 AT
    2010 XC60 3.0T AT
    2004 Mazda Miata 1.8 - My new toy and restoration project ... Not everything you do in life has to be rational!

    Gone: 2015 V40 D3 AT, 2002 V70XC 2.4T AT, 2007 S60 2.5T Manual, 2004 S60 2.0T Manual, 1996 850 GLT Manual

  9. #9
    Join Date
    Mar 2010
    Location
    Denver
    Posts
    148

    Default

    I've done 2, and will be doing the third next week when I finally get around to a few other things. I'm not expecting a significant difference but will report back regardless.

  10. #10
    Join Date
    Oct 2003
    Location
    Michigan, USA
    Posts
    460

    Default

    I've only done the top two on mine. Results are favorable as described by others. On the other hand, with the factory hoses I could detect hardly any difference with the heavy duty TCV.

    The explanation for only needing to change two of the three is, I think, that the bottom hose is pressurized by the turbo. It's purpose would be to provide the boost level feedback signal to the valve.

    The other two are vacuum lines (supply to the valve, control feed to the waste gate).

    Being constantly pressurized the signal hose would not be subject to collapse.

    But, if the hose walls aren't stiff enough, the two vacuum lines will collapse somewhat as the vacuum increases. As others have already explained, the collapsing hose would cause a lag/decrease in the control signal to the waste gate. So stiffer hose for those two lines results in better control signal with less lag.
    '04 XC70, Ash Gold / Taupe, Premium, Touring, Tinted Rear Glass, Rear SkyddsplÄt, Wing Profile Load Bars, USA Spec 11,
    StonGard Light Protection, Yokohama YK740 GTXs, Meyle HD Sway Bar Links, ipd HD TCV, subframe & top brace poly bushing inserts,
    TitaniumTim XC Cup-holder Coasters.

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