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1994 volvo 850 turbo wagon - ptc valve

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.

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southofmotown
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southofmotown

1994 volvo 850 turbo wagon - ptc valve

Post by southofmotown » Fri Aug 21, 2015 10:50 pm

Can anyone tell me what this hose is (outlined in yellow)? I have it connected my PTC valve, which I assume is proper placement. Thanks.
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by scot850 » Fri Aug 21, 2015 11:15 pm

From your other post, this pipe should run to the RH end of the inlet manifold and is the smaller pipe of the 2 you show in the other post. (RH is passenger side just behind the rear of the power steering pump and alternator.

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southofmotown
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by southofmotown » Fri Aug 21, 2015 11:28 pm

So bottom line is it should NOT be connecting to the PTC valve?

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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by Sommerfeldt » Sat Aug 22, 2015 3:06 am

ONLY the 2 hoses in the foam sleeve should be connected to the PTC. The big one on top, and the one with the elbow on the connection in your first pic.

- S
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southofmotown
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by southofmotown » Sat Aug 22, 2015 7:33 am

Okay I attached both breather hoses to the PTC valve (see pics). On the other side, the larger hose attaches to the oil trap, but I don't know where to put the smaller hose. My intake manifold does not appear to have an connection for it (see pics). Thanks.
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by Sommerfeldt » Sat Aug 22, 2015 8:12 am

Well... there should be a connector for it. I can see that you don't have one... But it would be helpful to see what connections you have on the other side. Have someone been tinkering with you intake manifold, to your knowledge?

Anyway, seems this chap has the same problem you do, if I'm not mistaken: http://volvoforums.com/forum/volvo-850- ... ump-24402/

- S
'96 855 T5, R bumper and spoiler, Koni Yellows & blue H&R springs all 'round.

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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by rspi » Sat Aug 22, 2015 8:42 am

The vehicle is a '94 model and probably has tubes running along the top of the head under the spark plug cover. Different from most.
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by Sommerfeldt » Sat Aug 22, 2015 8:48 am

rspi wrote:The vehicle is a '94 model and probably has tubes running along the top of the head under the spark plug cover. Different from most.
Yeah...could be. But isn't it still supposed to have the manifold connector? To me it kind of looks like someone's put a plug in that whole side of the manifold.

- S
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by southofmotown » Sat Aug 22, 2015 9:26 am

No I can't see that anyone has tinkered with the intake manifold - it was owned by a lady and then a younger guy who I don't think did much maintenance. As far as Robert's explanation, I've attached a pic of under the spark plug cover (if this view is helpful). Also, there is a hose that I don't know where it connects. I've outlined it in red so you can follow it. Can you tell me what it is and where it should connect? Thanks.
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Re: 1994 volvo 850 turbo wagon - ptc valve

Post by abscate » Sun Aug 23, 2015 4:33 am

Can you put up a picture of your vacuum hose diagram..sticker under the hood?

What's left....

EGR?
Fuel pressure regulator
Evap purge valve
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