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850 1995 pcv system without hose to the head from the oil trap

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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misha
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Re: 850 1995 pcv system without hose to the head from the oil trap

Post by misha »

LH 3.2 Jetronic.
One is for engine,the other one is for ignition.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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misha
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Post by misha »

viewtopic.php?t=62436

Looks like early B5254FS didn't had that hose for pcv on top of valve cover.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

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classical
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Year and Model: 1995 850 N/A 2.4
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Post by classical »

Ok. Well, I will see then what the oil trap is like and where the hoses go when (or if) I get the intake manifold out of the way. Thank you all so far!

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DennisCA
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Post by DennisCA »

That is certainly an odd one. I'd like to see where the trap goes as well.

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misha
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Post by misha »

It should connect to flame trap housing or big plastic hose which goes to throttle plate.
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
classical
Posts: 23
Joined: 4 December 2024
Year and Model: 1995 850 N/A 2.4
Location: Finland
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Post by classical »

This is what i found. Only one hose goes up from the box to the throttle plate, in addition to the short elbow hose obviously.
Attachments
20241213_130607.jpg

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misha
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Post by misha »

Pcv breather box have only one output?
I can't see clearly....knock sensor connector is blocking the view.

What about that little hose which looks like it's cut?
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
classical
Posts: 23
Joined: 4 December 2024
Year and Model: 1995 850 N/A 2.4
Location: Finland
Has thanked: 8 times
Been thanked: 5 times

Post by classical »

it is like this box (viewtopic.php?f=1&t=55470) but the hose from top of engine is missing.

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misha
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Post by misha »

I see only one port on the breather box from your picture.
Those from the link have two ports.

There is a Volvo part # on your breather box.
Can you read it and post it here?
'97 850 2.5 20v / fully equipped / Motronic 4.4 from the factory / upgraded with S,V,C,XC70 instrument cluster / polar white wagon
History of Volvos in the family:
'71 144 S
'73 144 De Luxe
'78 244 DL
'78 244 DL
'79 244 GLE
'85 340 GLS

User avatar
classical
Posts: 23
Joined: 4 December 2024
Year and Model: 1995 850 N/A 2.4
Location: Finland
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Post by classical »

My box is in other ways similar to the box behind the link except my box has only one port on top of the box. The part number: 6842718.

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