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1998 Volvo S70 T5 - PCV cleaning

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
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1997 - 2000 V70, V70 AWD
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Lan506
Posts: 14
Joined: Fri Feb 20, 2009 10:13 am
Year and Model: 1998 S70 T5M
Location: San Jose, CA
Contact:

1998 Volvo S70 T5 - PCV cleaning

Postby Lan506 » Tue May 05, 2009 4:50 am

As stated above I am working on a 1998 Volvo S70 T5 PCV breather system.

I am hoping MIJ can help me out with this, seeing how he just recently went through cleaning and replacing hoses on his PCV system.

I want to hopefully just clean out the PCV system, because I do not think it is to the point where it needs replacement. Some of the hoses and fittings look to be shot, so I am sure there will need to be hose replacements. I just bought silicon hose to replace all the vacuum lines and I would like to know which hoses on the PCV diagram can be replaced with either 3.5, 4, 6, or 10mm silicon hoses.

Referring to the diagram:
I am keeping Part 1 (Cleaning it)
I am keeping Part 17 (No need to replace)
Which of the remaining hoses do I need to buy a replacement for and which can i substitute with silicon?

Thanks
Zach
Attachments
pcv9596_850T.jpg
Black 1998 Volvo S70 T5m
2003 F-250 Super Duty Diesel

MadeInJapan
MVS Moderator
Posts: 12127
Joined: Thu Mar 31, 2005 2:14 pm
Year and Model: '98 S70 T5
Location: Knoxville, TN American but born in Japan

Re: 1998 Volvo S70 T5 - PCV cleaning

Postby MadeInJapan » Tue May 05, 2009 10:50 am

Zach,
I did a non-turbo pcv system which is much simpler- I would actually recommend you get the entire long piece with the two hoses inside of it (#7?)... problem is the nipple on the oil trap and the other end (PTC nipple/valve) are very large- much larger than the 10mm hose opening. Actually on mine, I used a 10 mm hose and fit it "inside" of the opening on the oil trap and cinched down a zip tie over all of that...it's a tight fit inside of the opening so I'm hoping it will stay and not be pushed out with any pressure- since yours is a turbo, there will be even more pressure from time to time- stay with the OEM large section (#7)....I know this is the main one- Oh, and also the snorkel piece to the top would be very hard to get silicone to work for- the rest, you could use silicone hose- different sizes- just get them all out and see what fits as you do the job.
'98 S70 T5 Emrld Grn Met/Beige Tons of Upgrades Mobil-1
'04 V70 2.5T Red/Taupe Some Upgrades Mobil-1
94 850 Sedan NA Drk Blue/Tan
'00 V40 Purple/Grey - SOLD

Lan506
Posts: 14
Joined: Fri Feb 20, 2009 10:13 am
Year and Model: 1998 S70 T5M
Location: San Jose, CA
Contact:

Re: 1998 Volvo S70 T5 - PCV cleaning

Postby Lan506 » Wed May 06, 2009 6:55 am

Sounds good, thanks MIJ I will order the part number 7. Gotta get the car up and running for a cross country trip, unfortunately I'm buying all the parts blind because my car is at my ma's house, but I need to order all the parts so they are there when I get there because I only have 3 days to fix everything up :o .
Black 1998 Volvo S70 T5m
2003 F-250 Super Duty Diesel


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