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What part is next to IAC valve? Need a diagram or pic of all hoses for this and intake Topic is solved

Help, Advice and DIY Tutorials on Volvo's extremely popular car line -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, 850 R, 850 T5-R, 850 T5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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CIK7
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CIK7

What part is next to IAC valve? Need a diagram or pic of all hoses for this and intake

Post by CIK7 » Tue Nov 12, 2019 12:41 pm

In the pic posted below, you will see the IAC valve and the black thing it plugs into directly above the AI. What is that black thing? If you look real good, you'll see that I broke 2 of the capped holes. My engine is running rough now and I think this is the reason. I need to replace the black thing because of that. Is this a cheap part?
Also I had a difficult time understand where to put the small hoses. There's the one that comes out the passenger side of the air intake manifold (I didn't put it back on), then another that I already plugged in directory to the manifold (under those 2 bigger ones). One plugs into that black thing. I need someone to show me where all of those hoses go.
Also the the IAC/throttle body joint hose needs to be replaced and I don't know where I would get it.
On other news, will my turbo be louder without any of the air box components installed? This is how I have it rn and it sounds weird.
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1998 V70 XC (selling electric driver seat, PM me)

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crlande
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Re: What part is next to IAC valve? Need a diagram or pic of all hoses for this and intake  Topic is solved

Post by crlande » Tue Nov 12, 2019 1:23 pm

Called the vacuum tree



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erikv11
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Re: What part is next to IAC valve? Need a diagram or pic of all hoses for this and intake

Post by erikv11 » Tue Nov 12, 2019 6:05 pm

- Vacuum tree. With it broken the car has a massive vacuum leak and will run like crap.
- vacuum lines viewtopic.php?t=63615
- do you mean one of these two hoses ? https://www.fcpeuro.com/products/volvo- ... vo-9141016 or https://www.fcpeuro.com/products/volvo- ... vo-9146225
- if the car is missing air box components that could also lead to vacuum problems


'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 140k
'98 S70 NA, 210k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 280k
'06 S60 R, 160k
gone: '96 NA 850 210k, '98 NA V70 182k

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