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Volvo 850 T-5R vacuum hose issues - routing

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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Year and Model: 1995 850 T-5r
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Volvo 850 T-5R vacuum hose issues - routing

Post by HarryT5R » Thu Jul 25, 2019 3:29 pm

Hello all,
I am in desperate need of some help with my vacuum hose routing because it seems no mechanic in all the lands knows where this missing hose goes...

I have the now very rare T-5r and I'm not getting full boost due to a missing hose, resulting in a clicking sound when it's drawing as well. It's resulting in poor fule/air mix and messing with the o2 sensor as well.

Does anybody have a UK T-5r or even a T5 that could help trace where this mystery pipe goes?

I'm barely an amateur mechanic but I sure am a Volvo enthusiast and simply love and cherish my 1995 5 cylinder beast!!

I would really appreciate it if somebody out there with 1995 turbo could trace their hose and let me know as I'm truly stumped
Elbow hose attachment closeup.pdf
(13.58 MiB) Downloaded 38 times
overview of rightside bay.pdf
(19.46 MiB) Downloaded 27 times
To sensor under airflow .pdf
(15.38 MiB) Downloaded 19 times
from manifold, before sensor.pdf
(21.64 MiB) Downloaded 22 times
Hose .pdf
(15.19 MiB) Downloaded 29 times

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Year and Model: 97 850 R Wagon
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Re: Volvo 850 T-5r vacuum hose issues - please help

Post by gmh » Fri Jul 26, 2019 2:29 pm

Here are a couple of pics of my 1997 850R. I have removed the cold air intake that fits from alongside the radiator to the air filter housing. This connection is the evap purge valve in my car. Of course this is a USA spec car and these parts may not be the same as yours. The elbow is not visible in the top photo and circled in red in the second photo.
elbow 2.jpg
elbow 2.jpg (197.3 KiB) Viewed 77 times
elbow 1.jpg
elbow 1.jpg (193.95 KiB) Viewed 77 times

1969 145S (1987-91)
1973 145E (1989-90)
1981 245 (1990-2001)
1981 244 (1991-2002)
1989 760 Turbo Wagon (1999-2011)
1994 850 Turbo Wagon (2002-2013) burnt valve
2001 V70 2.4T (2009-2017) sold
1997 850 R Wagon (2013-present)
2014 XC60 T6 (2017-present)

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Year and Model: 850, S/V70, 06 S60R
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Re: Volvo 850 T-5r vacuum hose issues - please help

Post by erikv11 » Fri Jul 26, 2019 4:15 pm

You should consider just replacing all vacuum hoses, the 25 year-old rubber is probably disintegrating in many places.

Look at the white sticker on the underside of the hood for your car's particular setup, but overall all turbos 95-98 have the same vacuum line routings: viewtopic.php?t=63615

If your car has EGR that makes for a few extra lines under the intake manifold to pay attention to.
'95 854 T5-R, Motronic 4.4, 185k
'96 855 NA, 145k
'98 S70 NA, 220k (living out west)
'98 V70, T5 tune-injectors-turbo, LPT engine, 286k
'06 S60 R, 167k
'99 Camry V6 :shock: 125k
gone: '96 NA 850 210k, '98 NA V70 182k

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