Question about 2001 Volvo S40

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Pcv valve location

2005 volvo s40 with check egine light on makes a whistling noise from the engine. I was told to check the pcv valve. could you tell me where it is located and how I can replace it?

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  • zest4itall Mar 16, 2009

    I have a 2004.5 S40 and I have same situation. I thought this might be the culprit.

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Volvo s80 y reg 2.4 runs ok little bit lumpy tickoover when warm but very loud whistling noise take dipstick it stops but very big suction from tube not pressure it is not breather box under manifold

Posted on Mar 12, 2010

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How do i change the pcv valve on my 2004 volvo s40? and where is it located?


location:Its a flame trap it separates the oil from ai
replacement:

  • 1

    Turn the Volvo 850 off and allow the engine and its components to cool for 30 minutes.

  • 2

    Open the hood of the Volvo 850 by pressing the hood release button within the vehicle. Locate the PCV valve; the valve is identified as a small rubber valve located on the engine crankcase. You will also notice a small hose sticking out of the end of the valve. If needed, read the Volvo 850 owner's manual for more information.


  • Disconnect the hose from the valve by pulling the hose out of the valve. The hose will come off the valve with minimal force.

  • 4

    Turn on the engine of the Volvo 850. Place your finger over the hole in the valve where the hose was connected. If you feel a strong suction, the valve is working properly and fine. If you do not feel a strong suction, the valve may be clogged and needs replacing.

  • 5

    Turn off the engine of the Volvo 850. Use needle-nose pliers and grip the valve. Pull the valve off of the crankcase.

  • 6

    Install a new valve by putting the valve in place on the crankcase. Insert the hose into the new PCV valve. Secure the new valve in place by pushing it down until it locks into place. Close the hood of the Volvo; pull up on the hood to ensure the hood is shut properly.


    X2 Performance Chip


  • Jun 19, 2012 | Volvo S40 Cars & Trucks

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    2006 volvo s40 50,000 mi. noticed a noise under hood that sounded like a belt slipping. sounded more like it was coming from the back of the motor. With the car running,I took the oil dip stick out and the...


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    Check engine, whistling moise


    THIS IS A CLEAR INDICATION THAT YOU HAVE A AIRLEAK TO THE MANIFOLD AND CAN BE ALLICATED WITH WATER SPRAYED TOT HE MANIFOLD. DO NOT PROLONG DRIVING AS THIS CAN DAMAGE YOUR VALVES.

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    Sounds like it's time for some basic maintenance. Some of the emission controls require changing. More specifically, the PCV. Positive Crankcase Valve.

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    Engine management light volvo s40 problem


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