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Carbon box 95 850 N/A

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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Danonly55
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Carbon box 95 850 N/A

Post by Danonly55 »

What would happen mechanicly if my carbon box and fuel tank vent were not connected ?
2014 Ford 3.5L ecoboost XLT
1995 Volvo 850 wagon GLE

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abscate
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Post by abscate »

You are going to Vent gas fumes into Mother Nature and she will angrily set a code for an evap error in retaliation
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foggydogg
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Post by foggydogg »

Better than even odds that it will disconnect itself naturally, then you get to play Whacka-Mole-vacuum hose.
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Danonly55
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Post by Danonly55 »

Ok , don't want to piss off mother nature. The car came with a replacement carbon box, purge line not hooked up or vent from tank not hooked up. No codes at all. It also passed emmissions :o . The car does have all new vacuum lines instaled when I did the PCV system. It still doesent have much pickup when I have to slow down on the freeway and then get back up to speed... slow to get back up to speed, she's a dog/pig/snail. Any Ideas guys ??
2014 Ford 3.5L ecoboost XLT
1995 Volvo 850 wagon GLE

Life is tough, but it's tougher when your stupid'
" John Wayne

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volvolugnut
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Post by volvolugnut »

Maybe she hangs out with Shotzie the Diesel Mercedes too much? :lol:

Assume it has had routine maintenance? Plugs, wires, etc.
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badboye46
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Post by badboye46 »

I know this is an old post, but I have a 94 NA sedan and have found that there may be the same problem with my car, my charcoal canister is connected and recently after having the same problems you are describing I found a missing plug (or vacuum cap) missing on my canister, the car idles fine runs fine once I get up to speed. But that’s where it sounds a lot like your problem. There is a vacuum line connected to the top of your air cleaner box top held on by two screws, one vacuum goes to the vacuum tree on the intake and another on that piece is teed and goes to the charcoal canister, these lines connect right under the battery tray. So if you are running the existing charcoal canister; as you said you have a spare, and the fuel vent line is disconnected and other lines to the vacuum canister, that is now a vacuum leak and could explain the “no pep” issues with your car should you still own it.

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