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" > 850 / S70 & V70 '96-'99 / C70 '97-'05 General

Notices

850 / S70 & V70 '96-'99 / C70 '97-'05 General Forum for the 850 and P80-platform 70-series models

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

T-5R boost gauge

Views : 611

Replies : 3

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old May 17th, 2019, 23:47   #1
GMC
Senior Member
 
GMC's Avatar
 

Last Online: Mar 13th, 2023 14:51
Join Date: Dec 2005
Location: Glasgow
Default T-5R boost gauge

Where does your boost gauge needle go to on your T-5R?
Mine goes off the scale....way off, about 5mm beyond the end of the scale! I'll try to get a picture when I'm out on Sunday.

When on full boost it pulls like a train, but when on full boost for a few seconds, always in 4th or 5th gear, it'll suddenly cut the boost which makes me thinking its over-boosting because maybe the boost sensor (TCV) is faulty?

It never happens in 1st, 2nd or 3rd gear as I need to move up a gear before it occurs.

I'm thinking about temporarily fitting a scaled boost gauge to see how much boost its actually generating!

Any thoughts would be appreciated
__________________
1995 855 T-5R Manual - Gull Yellow
2000 Honda Accord Type R - Red
2003 E46 BMW M3 - Black
2013 V70 D5 R Design - Grey(Daily Driver)
2015 Audi A3 184 TDi Quattro - Grey (The Wife's!)

Last edited by GMC; May 18th, 2019 at 00:19.
GMC is offline   Reply With Quote
Old May 22nd, 2019, 18:56   #2
winsox
Senior Member
 
winsox's Avatar
 

Last Online: Mar 25th, 2024 12:20
Join Date: Jun 2011
Location: Castleford
Default

Quote:
Originally Posted by GMC View Post
Where does your boost gauge needle go to on your T-5R?
Mine goes off the scale....way off, about 5mm beyond the end of the scale! I'll try to get a picture when I'm out on Sunday.

When on full boost it pulls like a train, but when on full boost for a few seconds, always in 4th or 5th gear, it'll suddenly cut the boost which makes me thinking its over-boosting because maybe the boost sensor (TCV) is faulty?

It never happens in 1st, 2nd or 3rd gear as I need to move up a gear before it occurs.

I'm thinking about temporarily fitting a scaled boost gauge to see how much boost its actually generating!

Any thoughts would be appreciated

Id check the waste gate actuator pipes and connections onto the TCV. They are know to rot and will give you the issue you are having.

Uncontrolled boost with the possibility of a bent rod at low RPM
__________________
Current Cars

Volvo 850R Estate 1996 Manual Conversion
SLK AMG 350 R172
winsox is offline   Reply With Quote
The Following User Says Thank You to winsox For This Useful Post:
Old Jun 23rd, 2019, 22:41   #3
GMC
Senior Member
 
GMC's Avatar
 

Last Online: Mar 13th, 2023 14:51
Join Date: Dec 2005
Location: Glasgow
Default

Thanks again Winsox. Sorry for the delay responding, I've be so busy with work I've just made it back into the garage today! You were spot-on, both pipes running to the actuator & turbo had seen better days. Replaced both and things are back to normal!
__________________
1995 855 T-5R Manual - Gull Yellow
2000 Honda Accord Type R - Red
2003 E46 BMW M3 - Black
2013 V70 D5 R Design - Grey(Daily Driver)
2015 Audi A3 184 TDi Quattro - Grey (The Wife's!)

Last edited by GMC; Jun 23rd, 2019 at 22:47.
GMC is offline   Reply With Quote
Old Jun 23rd, 2019, 22:43   #4
winsox
Senior Member
 
winsox's Avatar
 

Last Online: Mar 25th, 2024 12:20
Join Date: Jun 2011
Location: Castleford
Default

Quote:
Originally Posted by GMC View Post
Thanks again Winston. Sorry for the delay responding, I've be so busy with work I've just made it back into the garage today! You were spot-on, both pipes running to the actuator & turbo had seen better days. Replaced both and things are back to normal!
Glad u got it fixed !
__________________
Current Cars

Volvo 850R Estate 1996 Manual Conversion
SLK AMG 350 R172
winsox 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 21:45.


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