whistle sound when crosses 80 km/h

2015 TOYOTA YARIS
20,000 MILES • 1.3L • 3 CYL • AUTOMATIC
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FAKHAR
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there is a continuous whistle sound coming from my car. it start coming when speed reaches around 80 km/h and increases with increase in speed. I used to change oil and filters at time. I am worried about it.
Thanks.
Sep 2, 2015 at 5:44 AM
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HMAC300
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might be a vacuum leak check for that
Sep 2, 2015 at 7:38 AM