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XC90 '02–'15 General Forum for the P2-platform XC90 model |
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Boost whistle noise when coldViews : 629 Replies : 2Users Viewing This Thread : |
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Jun 18th, 2021, 12:15 | #1 |
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Last Online: Jan 5th, 2024 15:14
Join Date: Nov 2019
Location: Peterborough
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Boost whistle noise when cold
2005 XC90 D5 auto. I have a hissing / whistling turbo boost related noise which I notice with a window down, but only at low speed for the first few miles of a journey. I've been telling myself that its a built in feature to reduce the boost pressure when the engine is cold, but suspect its more likely a leak which seals itself once everything is hot. Is there a common leaky joint? Is there an acknowledged way to find the leak which is only heard when the turbo is boosting? Or is it designed like this?
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