|
C30 / S40 & V50 '04-'12 / C70 '06-'13 General Forum for the P1-platform C30 / S40 / V50 / C70 models |
Information |
|
V50 1.6Hdi (D4164T) 2010 - VNT turbo control issue ?Views : 1050 Replies : 19Users Viewing This Thread : |
|
Thread Tools | Display Modes |
May 25th, 2024, 16:30 | #1 |
New Member
Last Online: Yesterday 12:16
Join Date: Feb 2024
Location: Nevers
|
V50 1.6Hdi (D4164T) 2010 - VNT turbo control issue ?
Hi everyone,
I'm stucked with a lack of power issue that leads since monthes. No mechanics could help about (3 different ones + 2 volvo dealers - but are those mechanics anyway ?) so decided to investigate a little by myself. So far, following was undertaken: - Particle filter + differential pressure sensor replaced - Fuel filter replaced - EGR replaced & calibrated (VIDA) - MAF replaced - pressure test on intercooler & air inlet pipes shows no air leak - Turbo shaft: no axial displacement, very limited radial gap (oil film thickness) - Turbo vacuum actuator checked, new servovalve expected in few days (under delivery, but I doubt it will help...). Could not check actuator stroke though, but could that noticeably have changed with time ? - no leak on vacuum hoses / circuit (tested with a vacuum hand pump) VIDA doesn't show up any relevant error code anymore, but I still feel driving an old 12T Panzer fitted with a 4.5V razor engine. Following chart may illustrate what the problem is: with 2nd gear engaged, it took 12 seconds to raise from 1080 to 3300 RPM (oh no, not an Anapurna road, just as flat as my feelings about repairing that car...). 240524-VIDA_004.jpg Any idea / suggestion / encouragement from you guys would be warmly welcome (you may even come along with odd ideas such as 'check tyres pressure' or 'wash the car with apple juice', I wont fail to try out ! )
__________________
V70 D5 AWD (2002), XC70 D5 AWD (2007) |
May 28th, 2024, 09:15 | #2 |
Member
|
I'm currently suffering exactly the same issue and have been through the list that you have. I've come to the conclusion that after 171k miles the vanes are either stuck, destroyed or that although the actuator looks to be working the mechanism that connects it to the vane angle mechanism has failed inside the turbo. Consequently I think replacement of the turbo is my only remaining option.
I took the output hose off the turbo, had the car constantly revved at 2000 rpm then manually activated the turbo actuator. There was no change at all in the airflow coming out of the turbo which would lead me to believe that the variable vane system has failed.
__________________
Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE Last edited by iainmd; May 28th, 2024 at 09:38. |
May 28th, 2024, 12:28 | #3 | |
New Member
Last Online: Jun 23rd, 2024 04:20
Join Date: Nov 2019
Location: Budapest
|
Quote:
Last edited by Lightguard; May 28th, 2024 at 12:31. |
|
May 28th, 2024, 13:49 | #4 | |
Experienced Member
Last Online: Today 11:03
Join Date: Jun 2007
Location: L/H side
|
Quote:
__________________
My comments are only based on my opinions and vast experience . |
|
May 29th, 2024, 11:16 | #5 |
Member
|
That's me just ordered a new Garrett turbo. I'll report on my progress once fitted. After testing virtually everything, I can only deduce that the variable vane mechanism is jammed or has failed so replacement seem like the best option. The vacuum system seems fine and the actuator is moving but there is zero boost.
__________________
Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE |
May 31st, 2024, 07:03 | #6 |
New Member
Last Online: Yesterday 12:16
Join Date: Feb 2024
Location: Nevers
|
Thanks everyone, and sorry for late acknowledgement.
@iainmd: well, your diagnostic might well be the right one. Please keep us informed, thanks ! @Lightguard: thanks for your suggestion, MAF unplugged makes no difference at all (tried that before replacing it) and unfortunately VIDA 2015 doesn't allow for more than 5 variables recordings...
__________________
V70 D5 AWD (2002), XC70 D5 AWD (2007) |
May 31st, 2024, 14:00 | #7 |
Member
|
Certainly will do. I expect the new turbo to arrive next week. I hope to goodness I'm right and it fixes the issue.
__________________
Present: 2009 Volvo V50 1.6D DRIVe SE Past: 2004 Volvo S40 T5 SE |
May 31st, 2024, 14:11 | #8 | |
Premier Member
Last Online: Today 14:04
Join Date: Jun 2009
Location: Devon
|
Quote:
|
|
May 31st, 2024, 14:19 | #9 | |
Experienced Member
Last Online: Today 11:03
Join Date: Jun 2007
Location: L/H side
|
Quote:
It amazes me you are happy to spend £1000 on a guess ( turbo) but wont get it diagnosed properly then repair it yourself.
__________________
My comments are only based on my opinions and vast experience . |
|
May 31st, 2024, 14:28 | #10 |
New Member
Last Online: Yesterday 12:16
Join Date: Feb 2024
Location: Nevers
|
Thanks for the advise CLAN, but I never had any fault code related to software whatsoever. Moreover, the car has been running nicely for few years before starting gradually to loose power / torque. And despite 45+ years working in automation and control systems, I've never seen a software (nor hardware) failing gradually... but sure, I may have missed something
__________________
V70 D5 AWD (2002), XC70 D5 AWD (2007) |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
|
|