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What is this part? ...

Help, Advice, Owners' Discussion and DIY Tutorials on S40 and V40. In this forum you'll find S40/V40-specific owners asking and answering questions on maintenance, ownership, repairs, tutorials and almost every do-it-yourself thing you can do to save money owning these Volvos.

1996 - 2004 S40
1996 - 2004 V40

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Year and Model: 2001 S40
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What is this part? ...

Post by MikeLMFT » Sun Sep 22, 2019 10:06 pm

Need to replace this leaking HOSE, and yet cannot identify it. Front end goes up into the same port as upper intercooler hose, then burrows inches right of intake and beneath throttle body. ID is about 1", and stretched is about 10-12" long.

Thanks to anyone that can help!
HOSE back-center of radiator to under throttle body.jpeg
Name and purpose of this hose? It' leaking oil.

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Year and Model: 1998 s70 t5m
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Re: What is this part? ...

Post by VTs70T5M » Sat Oct 12, 2019 8:27 pm

Looks like it pulled from the oil separator box.
Its under the manifold so will require you to remove intake manifold.
Its part of the pcv system that is likely clogged.
Check ptc nipple at air pipe that goes to turbo down low past maf it has an electrical connector and 2 hoses attached to it. Takes ventilation from engine separates the oil and air puts air in intake and oil back into block. The ptc generally clogs and allows air pressure to build and blow the weakest link in your case looks like oketier clamp that held hose to oil separator box.

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Re: What is this part? ...

Post by RickHaleParker » Sat Oct 12, 2019 9:39 pm

Hose between the Charge Air Cooler (CAC) and the Idle Air Control (IAC) Valve, which is built into the intake manifold.

2001-03 | X40 Idle Control Valve Hose is Volvo Part Number 30637166.
$12.70 at FCP Euro.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
Platform P2 2004 S60R, B2524T4, AW50/51 AWD, B8444S TF80 AWD, Bosch Motronic 7.0, BorgWarner K24 turbocharger. V8 conversion in progress.

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