Volvo Community Forum. The Forums of the Volvo Owners Club

Forum Rules Volvo Owners Club About VOC Volvo Gallery Links Volvo History Volvo Press
Go Back   Volvo Owners Club Forum > "Technical Topics" > Diesel Engines

Notices

Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines.

Information
  • VOC Members: There is no login facility using your VOC membership number or the details from page 3 of the club magazine. You need to register in the normal way
  • AOL Customers: Make sure you check the 'Remember me' check box otherwise the AOL system may log you out during the session. This is a known issue with AOL.
  • AOL, Yahoo and Plus.net users. Forum owners such as us are finding that AOL, Yahoo and Plus.net are blocking a lot of email generated from forums. This may mean your registration activation and other emails will not get to you, or they may appear in your spam mailbox

Thread Informations

Diesel XC90 - Wastegate Stuck open ?

Views : 3561

Replies : 6

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Mar 12th, 2009, 16:24   #1
200bhp
XC90 03 D5 Auto
 

Last Online: Feb 29th, 2012 08:27
Join Date: Nov 2008
Location: solihull
Default Diesel XC90 - Wastegate Stuck open ?

My wifes 2003 XC90 has just had to have the crank seal replaced at only 50k (I mention that in case its related) and we noticed that if we blip the throttle hard there is a dump valve noise coming from the air filter box.

A volvo specialist has had a look and thinks the wastegate is stuck open and thinks we need a new turbo.

Has anyone has an experience of this ?

It seems strange to me that the wastegate can't be freed up but I am only familiar with older petrol turbos.

Any advice welcome even if it only for a recon specialist.
200bhp is offline   Reply With Quote
Old Mar 18th, 2009, 22:01   #2
4wheeldriver
Master Member
 
4wheeldriver's Avatar
 

Last Online: Jan 20th, 2013 21:28
Join Date: Nov 2008
Location: Aberdeen
Default

I can have a word here with a guy I know that deals in turbos and recons. Appreciate its a bit far from you but might be able to find out summat for you in regard to the wastegate and point you in the right direction.
__________________
BMW X5 3.0sd SE with more extras than the cast of Ben Hur!!!! Mini Cooper Worx
4wheeldriver is offline   Reply With Quote
Old Mar 18th, 2009, 22:43   #3
Clan
Experienced Member
 
Clan's Avatar
 

Last Online: Yesterday 22:26
Join Date: Jun 2007
Location: L/H side
Default

The wastegate as such is controlled by an electric motor they dont stick .. If there is a lack of power too , they have not fitted a boost pipe properly and it has blown off, take a look ...you may be able to refit it yourself .. failing that look for a split intercooler or a missing air filter ...
__________________
My comments are only based on my opinions and vast experience .
Clan is offline   Reply With Quote
Old Mar 18th, 2009, 23:42   #4
200bhp
XC90 03 D5 Auto
 

Last Online: Feb 29th, 2012 08:27
Join Date: Nov 2008
Location: solihull
Default

I keep getting different replies from different experts.

One says the noise isn't normal and is excess pressure and the power is reduced.

One says its normal and the power is fine.

It has been scanned by various machines - no fault codes as such but from reading live data some say there is a boost problem and others disagree.

If a few of you could report back what your diesel XC90 does that would be handy.

If you open the bonnet and blip the throttle to say 4000rpm as you lift off is there a noise like air escaping coming from the airbox ?

If you drive up the road with the window open as you accellerate and then lift in the course of normal driving can you hear the turbo whooshing ?

Thanks
200bhp is offline   Reply With Quote
Old Mar 19th, 2009, 00:30   #5
hobbyhorse
Premier Member
 

Last Online: Jan 26th, 2015 22:30
Join Date: Dec 2006
Location: Billericay
Default

Quote:
Originally Posted by 200bhp View Post
My wifes 2003 XC90 has just had to have the crank seal replaced at only 50k (I mention that in case its related) and we noticed that if we blip the throttle hard there is a dump valve noise coming from the air filter box.

A volvo specialist has had a look and thinks the wastegate is stuck open and thinks we need a new turbo.

Has anyone has an experience of this ?

It seems strange to me that the wastegate can't be freed up but I am only familiar with older petrol turbos.

Any advice welcome even if it only for a recon specialist.
What is it about about specialists & faulty turbo's ? if the wastegate was jammed open it would have about as much power as a moths f@rt right across the rev range. Sounds very much like a air leak at high boost. I suspect Cam's response is on the money here, especially as the car's had major surgery & the turbo's are very reliable
hobbyhorse is offline   Reply With Quote
Old Mar 19th, 2009, 08:59   #6
hobbyhorse
Premier Member
 

Last Online: Jan 26th, 2015 22:30
Join Date: Dec 2006
Location: Billericay
Default

Quote:
Originally Posted by hobbyhorse View Post
What is it about about specialists & faulty turbo's ? if the wastegate was jammed open it would have about as much power as a moths f@rt right across the rev range. Sounds very much like a air leak at high boost. I suspect Cam's response is on the money here, especially as the car's had major surgery & the turbo's are very reliable
I of course meant CLAN
hobbyhorse is offline   Reply With Quote
Old Mar 22nd, 2009, 01:03   #7
Road King Scot
New Member
 

Last Online: May 14th, 2010 01:43
Join Date: Dec 2007
Location: Newport Pagnell
Default

I've got a noise coming from my 2005 XC90 D5 when you ease off the revs. It sounds like a fan slowing down. I haven't experienced any loss in power or performance so I'm not sure what the noise is.

Is this an early symptom of this previously mentioned turbo problem, or is it something else? Car's due for its service in May, but should I be checking anything now? All power belts seem ok and aircon is working fine, so it's got me puzzled.
Road King Scot is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 00:28.


Powered by vBulletin
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.