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FINALLY, a Vacuum Hose Diagram 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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matthew1
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Year and Model: 850 T5, 1997
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Re: FINALLY, a Vacuum Hose Diagram

Post by matthew1 »

Imageshack -- who was hosting the diagram -- appears to have deleted it from their server(!).

I found it somewhere, and am now hosting it here for safekeeping.

Image
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1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

Image
rcannon
Posts: 65
Joined: Fri Nov 20, 2009 4:52 pm
Year and Model: 96,7 850 T, GLT Wgns
Location: Peoria, IL

Re: FINALLY, a Vacuum Hose Diagram

Post by rcannon »

Hello - thanks for the diagram. I'm new here. Great forum. I have a new 97 850 turbo wagon, and am having some problems with overboost and cutting out. I can't figure out where the red line that comes out of the TCV should go. Currently it's tee'd into a line that hooks onto the beginning of the air inlet tube just after the air filter, and the other end goes to the end of the air inlet tube where there is a larger hose also coming into it. This doesn't make sense to me- the wastegate needs a line going to boost pressure. But I can't find a pressure tap according to the diagram on the turbo, unless the large 3/8" or so braided hose going into the turbo inlet line comes from the inlet manifold and there's an orifice in there or something.

Also the center blue line was going to a metal tube about 1/8" dia going down the back of the engine along a larger metal tube, and the hose appears about 1/4" so that can't be right. It says it goes to fresh air hose, or I suppose that's the air inlet also.

Thanks in advance.
Bob
rcannon
Posts: 65
Joined: Fri Nov 20, 2009 4:52 pm
Year and Model: 96,7 850 T, GLT Wgns
Location: Peoria, IL

Re: FINALLY, a Vacuum Hose Diagram

Post by rcannon »

Found a better picture elsewhere and mine is way off as suspected. But I still don't know what goes on the hard 1/8 tube that starts near the TCV but lower, and is rigid mounted, and goes across and down the back of the engine lower somewhere out of view. Maybe to the transmission? If so what should be hooked to it?
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kcodyjr
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Re: FINALLY, a Vacuum Hose Diagram

Post by kcodyjr »

Have that better picture? I'm finding that one hard to follow.
1997 850 GLT sedan, 152K and WHOOHOO!
RIP 1996 850 wagon, 201K, hit by a runaway 4-wheeler
RIP 1996 850 GLT sedan 5spd, 260K, rearended someone
RIP 1986 245 boring, 200K, rusted beyond inspectability
RIP 1981 242 turbo 5spd, 300K, serious teenage crash
rcannon
Posts: 65
Joined: Fri Nov 20, 2009 4:52 pm
Year and Model: 96,7 850 T, GLT Wgns
Location: Peoria, IL

Re: FINALLY, a Vacuum Hose Diagram

Post by rcannon »

I had found a parts book picture showing it in more detail on another forum. Here is the link.

http://volvoforums.com/forum/showthread.php?t=28205

Good luck.
MatDesign84
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Joined: Sun Apr 29, 2007 8:22 am
Year and Model: 1997,855 T5
Location: Johnson City, TN
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Re: FINALLY, a Vacuum Hose Diagram

Post by MatDesign84 »

I am experiencing several problems and trying to bang them out one at a time and not get too overwhelmed. I was putting on a new serp belt today and found a vacuum leak. It is on the left side of the what I think is called the Intake Manifold. I have highlighted the posted image from earlier where my problem lies. There is nothing connected there only the remains of where the end of the a hose that was once there. When I put my finger on it it sucks on it and after a few seconds the engine really smooths out and sounds better than it ever has. Can anyone advise me on how to find the other end of this hose where it connects to? Maybe even a pic of the part it connects to would be much appreciated. I would also be interested in knowing what size vacuum hoses I should purchase. I want to replace most of the vacuum hoses/ Measurements in mm would be great, or a place I can buy a kit.
Thank you in advance.
-Mat
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855 moneypit
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Joined: Sat Apr 17, 2010 11:35 pm
Year and Model: 850 1995
Location: San Diego

Re: FINALLY, a Vacuum Hose Diagram

Post by 855 moneypit »

I don't know the size of the hose you're looking for but the part number is 976734-4. I'm sure the dealership can give you the size and you can pick it up at your local parts store. The line from the dealer is $20.
BTW, getting the line on the manifold was a total PITA when I did mine. Very tight working space.
j_cd
Posts: 474
Joined: Sat Apr 24, 2010 3:34 pm
Year and Model: 1998 S70 GLT
Location: Los Angeles, CA

Re: FINALLY, a Vacuum Hose Diagram

Post by j_cd »

I just ordered this silicone vacuum hose kit myself. Scroll down past the Turbo Intercooler Kits and you'll see it. I got the cheaper one, I'll re dress my wires with 10mm later.

http://p.ly/bPVCk
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matthew1
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Re: FINALLY, a Vacuum Hose Diagram

Post by matthew1 »

Image
Help keep MVS on the web -> click sponsors' links here on MVS when you buy from them.
Also -> Amazon link
. Click that when you go to buy something on Amazon and MVS gets a kickback.

1997 850 T5, MSD ignition coil, Hallman manual boost controller, injectors, R bumper, OMP strut brace [gone]
2004 V70 R [gone]

Image
kevvenl
Posts: 1
Joined: Thu May 26, 2011 3:17 am
Year and Model: 1987
Location: santa fe spring

Re: FINALLY, a Vacuum Hose Diagram

Post by kevvenl »

Hi there, Above pics helps me better but posts are so old...looking for new pics that helps more... :roll:
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