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Replacing TCV hoses

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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bobice
Posts: 163
Joined: 15 November 2009
Year and Model: XC70 1999
Location: MD

Re: Replacing TCV hoses

Post by bobice »

Where do you guys get the TCV hose?

How about this one: http://www.ipdusa.com/Volvo-S60/Engine- ... -395-4235/

redroostr
Posts: 3
Joined: 28 April 2010
Year and Model: s70 1999
Location: Orange, CA

Post by redroostr »

I just bought some vacuum hoses from the local auto shop. It was about 5 bucks for 6 feet.

phat78ta
Posts: 281
Joined: 21 January 2010
Year and Model: 94 850 turbo wagon
Location: ohio

Post by phat78ta »

You also need to remove the air inlet pipe from the turbo. With that out of the way, you have room for even the big arms(i know from personal exp). Also, a pair of bent nose needle nose pliers are your best friends on these engine bays. You want clearance problems, try replacing the bypass valve with the turbo on the car. Thank God for ratchet wrenches.:D
93 850 GLT sedan 156K
94 850 Turbo 189K

bobice
Posts: 163
Joined: 15 November 2009
Year and Model: XC70 1999
Location: MD

Post by bobice »

How to remove the fresh air hose from the airbox to turbo charger? It's easy to remove the side with MAF sensor, but I don't see a clamp on the other side?

My TCV hoses are so torn up that I could not see clearly the color codes - Where're the color-codes?. I am attaching the vacuum hose diagram if someone has the label off the hood.
Attachments
2000 V70XC Vacuum hose diagram
2000 V70XC Vacuum hose diagram
2000 V70XC Vacuum hose diagram.JPG (90.32 KiB) Viewed 3950 times

jblackburn
MVS Moderator
Posts: 14043
Joined: 8 June 2008
Year and Model: 1998 S70 T5
Location: Alexandria, VA
Has thanked: 9 times
Been thanked: 19 times

Post by jblackburn »

My old hoses were not colored, but the dots on the turbo control valve are.

Holding my old one in my hand right now,
IMG_5287.JPG
Right port, 0 degrees goes to the air hose. Yellow (90 degrees) to the wastegate. And red (left) to the compressor side of the turbo.

The intake air hose detaches at the turbo itself. You have to remove the pipe by reaching straight down through the back of the engine and feeling the hose where it attaches to the turbo. There you will find the clamp and feel around for the screw. A bright light REALLY helps a lot - I held a flashlight in my teeth while crawling across the engine to reach it. You can get to the screw with a flathead screwdriver, the longer the better.
'98 S70 T5
2016 Chevy Cruze Premier


A learning experience is one of those things that says, "You know that thing you just did? Don't do that."

mercuic: Long live the tractor motor!

bobice
Posts: 163
Joined: 15 November 2009
Year and Model: XC70 1999
Location: MD

Post by bobice »

Where can I get some of the spring clamps? And the size? I want to secure the hose to prevent another big problem on highway.

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