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96' 850 unidentifiable hose at air filter box

Help, Advice and DIY Tutorials on Volvo's P80 platform cars -- Volvo's 1990s "bread and butter" cars -- powered by the ubiquitous and durable Volvo inline 5-cylinder engine.

1992 - 1997 850, including 850 R, 850 T-5R, 850 T-5, 850 GLT
1997 - 2000 S70, S70 AWD
1997 - 2000 V70, V70 AWD
1997 - 2000 V70-XC
1997 - 2004 C70

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abscate  
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Re: 96' 850 unidentifiable hose at air filter box

Post by abscate »

Are you near I87 on Thursday? Coming through on my way to PA. I have air box in my tailgate already.
Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 XC90-in-Red
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Ozark Lee
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Post by Ozark Lee »

The nice thing about that system, as opposed to the earlier version, is that it fails in the "hot air off" position. On my older cars with the wax capsule I just stuck a rock in the mechanism to hold it in the cold air position since its failure mode was constant hot air.

Not having the hot air from the exhaust is not a big deal with a cold engine but feeding it hot air with a warm engine kills the fuel mileage and to an extent the performance. If you don't have a local inspection process that mimics Formula 1 Scrutineering I would just block off the vacuum line and forget about it.

...Lee
'94 850 N/A 5 speed
'96 Platinum Edition Turbo
Previous:
1999 V70XC - Nautic Blue - Totaled while parked.
1999 V70XC - RIP - Wrecked Parts Car.
1998 S70 T5
1996 850 N/A
1989 740 GLT
1986 740 GLT
1972 142 Grand Luxe

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850 LPT
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Post by 850 LPT »

You guys are great!

Take a moment and thank these dedicated folk on MVS for going above and beyond to help people out.

Consider this problem solved.

Dirk
98' S70, base, 5-speed manual, pewter/ tan, 145k miles
99' S70, base, 5-speed manual, nautic blue/ tan, 225k miles, currently inop
06' V70, auto, willow green/ charcoal, 147k miles
79' Ford Capri S, Euro Spec 2.8 V6, T9 5-speed manual, owned since 1986
58' Porsche Diesel Junior
13' Honda Odyssey :oops:
84' Mercedes 300 D, gold/ tan, 420k miles (retirement project :D )

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