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" > 700/900 Series General

Notices

700/900 Series General Forum for the Volvo 740, 760, 780, 940, 960 & S/V90 cars

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

Whats this on my 940 turbo?

Views : 546

Replies : 7

Users Viewing This Thread :  

Reply
 
Thread Tools Display Modes
Old Jan 14th, 2019, 14:53   #1
mhuk
Senior Member
 

Last Online: Mar 1st, 2024 09:41
Join Date: Mar 2009
Location: London
Default Whats this on my 940 turbo?

I found this tube and it's damaged. The other end had a screw bodged in the end. Picture located bulk head end of engine in the middle above rocker. Goes left to right and ends up UK passenger side.

Cheers
Attached Images
File Type: jpg 20190112_161021.jpg (88.3 KB, 59 views)
mhuk is offline   Reply With Quote
Old Jan 14th, 2019, 18:03   #2
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 16:15
Join Date: May 2012
Location: Lakenheath
Default

Quote:
Originally Posted by mhuk View Post
I found this tube and it's damaged. The other end had a screw bodged in the end. Picture located bulk head end of engine in the middle above rocker. Goes left to right and ends up UK passenger side.

Cheers
Does your boost gauge work? It looks suspiciously like the hose that feeds the gauge to me.
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby is offline   Reply With Quote
Old Jan 15th, 2019, 08:37   #3
jonnyf90
Grumpy git born too late!
 
jonnyf90's Avatar
 

Last Online: Mar 20th, 2024 02:04
Join Date: Jul 2014
Location: Between Derby & Nottingham
Default

Definitely looks like a vacuum tube. As mentioned, dashboard boost gauge feed?

Cheers
__________________
1997 965 2.5 SE Manual
1996 944 Classic 2.3 LPT - SOLD/BROKEN/SCRAPPED
1997 S90 3.0 - SOLD to doingitsideways

2021 Škoda Octavia Estate L iV PHEV (Company)
jonnyf90 is offline   Reply With Quote
The Following User Says Thank You to jonnyf90 For This Useful Post:
Old Jan 15th, 2019, 11:08   #4
mocambique-amazone
Master Member
 

Last Online: Jan 24th, 2022 18:08
Join Date: Nov 2008
Location: small village in the north of Germany
Default

is your with cruise control?
mocambique-amazone is offline   Reply With Quote
The Following User Says Thank You to mocambique-amazone For This Useful Post:
Old Jan 15th, 2019, 13:06   #5
mhuk
Senior Member
 

Last Online: Mar 1st, 2024 09:41
Join Date: Mar 2009
Location: London
Default

thanks all. I do not have cruise control or a turbo gauge. I suspect it's for a turbo gauge but none here apart from what the old user fitted and that's using a different line.
mhuk is offline   Reply With Quote
Old Jan 15th, 2019, 14:11   #6
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 16:15
Join Date: May 2012
Location: Lakenheath
Default

Next thing is to follow the hose to its ends to find out if it's actually connected to anything. A thought crossed my mind that if the previous owner had a boost gauge, he also had an MBC so the gauge would have been on one hose and the MBC on the other - the one in your pictures maybe.
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby is offline   Reply With Quote
Old Jan 15th, 2019, 15:29   #7
mhuk
Senior Member
 

Last Online: Mar 1st, 2024 09:41
Join Date: Mar 2009
Location: London
Default

I have a turbo smart valve. I can switch between 10 and 16psi. I'm just confused why i have (looks to be) a volvo boost line and no OEM guage.

Unless... Does the volvo ECU come with a MAP sensor? My modded 480 turbo had a remapped ecu with a 3 bar map sensor added.

oh the fun of 25psi on a T25 and FWD. Shame the autobox was not friends lol.
mhuk is offline   Reply With Quote
Old Jan 15th, 2019, 15:48   #8
Laird Scooby
Premier Member
 
Laird Scooby's Avatar
 

Last Online: Today 16:15
Join Date: May 2012
Location: Lakenheath
Default

If yours is/was an LPT originally, it won't have the boost gauge as far as i understand things.

The MAF takes the place of a MAP sensor usually, the MAP tends to eliminate the need for a MAF as the same info can be calculated by the ECU from engine speed, throttle position (through a throttle potentiometer, rather than just two switches as on the majority of the Volvo systems) and Manifold Absolute Pressure.
__________________
Cheers
Dave

Next Door to Top-Gun with a Honda CR-V & S Type Jag Volvo gone but not forgotten........
Laird Scooby 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 19:27.


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