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whining Sound after PCV wrong installation

Help, Advice, Owners' Discussion and DIY Tutorials on the Volvo S80 model. Sometimes called an "executive car", the S80 was and continues to be Volvo's top-of-the-line passenger car.
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whining Sound after PCV wrong installation

Post by sherry007 » Sat May 28, 2016 11:52 am

Volvo s80 2.9 1999 Non Turbo

I accidentally install the one way air valve on the Throttle hose which pushed the air back to PCV. After correcting it, now i can here the whining sound from the engine...please hear closely beside engine voice there is whining sound.

Please appreciate feedback

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