Question about 2005 Volvo V50

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Whistling noise in the engine

I have a Volvo V50 T5 and out of the blue a whislting noise started to come from the engine, sounded like a air was trapped inside and trying to come out. Sure enough when I pulled on the dipstick it relieved the pressure and the noise stopped. No noise when the car is cold but it comes back when temperature rises to normal levels. A mechanic tells me that it as filter box(?) by the crank case. Have you heard of such a problem and do you have a rough idea of how much it would cost to get it fixed?
Thank you.

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  • MonsterVolvo Dec 31, 2008

    I have the same problem on a 2005 V50 T5 AWD with approx 21k miles on it; it sounds as if the turbo mechanism is whistling. I notice it at lower speeds, but probably only because it's easier to hear it at the lower speed. Whether or not the engine is warm doesn't seem to be an issue; it just whistles.

  • focus st May 10, 2009

    are Italian and I have the same problem on the focus st engine volvo with exactly how you solved?

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TAKE YOUR CAR TO THE DEALER. THE SOUND YOU HEAR IS A FAILED DIAPHRAM ON THE OIL BREATHER BOX (BENEATHE THE INTAKE MANIFOLD). FAILURE TO REPLACE THE AFFECTED PART WILL UNDOUBTEDLY RESULT IN YOU BLOWING YOUR CAM SEALS

Posted on Mar 03, 2009

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Check and make sure the crankcase ventalation system is not plugged, there sould not be pressure in the crankcase.

Posted on Dec 01, 2008

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