What's this sensor / valve ?

Pjrebordao · Dec 7th, 2015, 12:35

On the right side of the engine, between it and the airbox, there's a valve (?) with three small hoses attached and a 2-pin connector. What's it for ?
I'm asking because the hoses look pretty bad...

Rossi-fan · Dec 7th, 2015, 12:51

Can you get a picture of it posted up?

Georgeandkira · Dec 7th, 2015, 13:15

In addition to a picture the year, trim level / engine size would be extremely helpful.

When you get to changing any hoses on this thing remember it's better to make a cut with a razor knife lengthwise down the barb fitting rather than "grab and twist". You don't want to break a fitting off.

Are the 3 hoses the same size? Kira

TDIvolvo · Dec 7th, 2015, 13:39

Quote:

Originally Posted by Pjrebordao

On the right side of the engine, between it and the airbox, there's a valve (?) with three small hoses attached and a 2-pin connector. What's it for ?
I'm asking because the hoses look pretty bad...

Pretty sure what you are talking about is the vacuum hose valve.

Pjrebordao · Dec 7th, 2015, 15:09

I'll post pics later but all 3 lines have same diameter and car is a 01' xc70 2.4T

outnumbered · Dec 7th, 2015, 16:22

Then it's the Tcv

Pjrebordao · Dec 7th, 2015, 16:47

Here it is. TCV ?

Pjrebordao · Dec 7th, 2015, 16:51

If it's the TCV, it might explain why sometimes boost seems to leave the house...

Georgeandkira · Dec 7th, 2015, 20:16

Do TCV's get serviced in any way? ...a light oiling or cleaning?
Do they ever just break? Kira

nordmaschine · Dec 7th, 2015, 20:34

They do die, but they can usually be either full of soot, especially if the engine/turbo is using oil, or just can't function properly if hoses coming to/off of them are split/torn somewhere. Or both...

Carb bleaner and replacing hoses might just give you back your boost...

Dec 7th, 2015, 12:35	#1
Pjrebordao I've Been Banned Last Online: May 20th, 2024 20:24 Join Date: Dec 2015 Location: Lx	What's this sensor / valve ? On the right side of the engine, between it and the airbox, there's a valve (?) with three small hoses attached and a 2-pin connector. What's it for ? I'm asking because the hoses look pretty bad...

Dec 7th, 2015, 16:22	#6
outnumbered Lunatic from Wakefield Last Online: Apr 16th, 2023 06:33 Join Date: Dec 2004 Location: wakefield	Then it's the Tcv __________________ 2012 volvo xc90 Executive Buccaneer Bermuda 2021

Dec 7th, 2015, 12:51	#2
Rossi-fan Premier Member Last Online: Feb 12th, 2023 10:07 Join Date: May 2009 Location: Durham	Can you get a picture of it posted up?

Dec 7th, 2015, 13:15	#3
Georgeandkira Premier Member Last Online: Today 02:06 Join Date: Feb 2009 Location: Hackensack	In addition to a picture the year, trim level / engine size would be extremely helpful. When you get to changing any hoses on this thing remember it's better to make a cut with a razor knife lengthwise down the barb fitting rather than "grab and twist". You don't want to break a fitting off. Are the 3 hoses the same size? Kira

Dec 7th, 2015, 15:09	#5
Pjrebordao I've Been Banned Last Online: May 20th, 2024 20:24 Join Date: Dec 2015 Location: Lx	I'll post pics later but all 3 lines have same diameter and car is a 01' xc70 2.4T

Dec 7th, 2015, 16:51	#8
Pjrebordao I've Been Banned Last Online: May 20th, 2024 20:24 Join Date: Dec 2015 Location: Lx	If it's the TCV, it might explain why sometimes boost seems to leave the house...

Dec 7th, 2015, 20:16	#9
Georgeandkira Premier Member Last Online: Today 02:06 Join Date: Feb 2009 Location: Hackensack	Do TCV's get serviced in any way? ...a light oiling or cleaning? Do they ever just break? Kira

Dec 7th, 2015, 20:34	#10
nordmaschine Member Last Online: Jun 16th, 2023 17:00 Join Date: Mar 2013 Location: Banjaluka	They do die, but they can usually be either full of soot, especially if the engine/turbo is using oil, or just can't function properly if hoses coming to/off of them are split/torn somewhere. Or both... Carb bleaner and replacing hoses might just give you back your boost...

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