2003 Volkswagen Passat Whistling sound

2003 VOLKSWAGEN PASSAT
109,200 MILES • 1.8L • 4 CYL • TURBO • AUTOMATIC
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KAPAPAT
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When driving 40 mph and over there is a whistling sound. This sound only comes when I hit the gas and it gets louder when I pick up speed. This noise is annoying and surely cannot be normal?
Jan 21, 2015 at 5:41 PM
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CARADIODOC
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Would you say it sounds more like the buzz of an airplane engine? If so, a good suspect is a noisy front wheel bearing. Your mechanic can identify that by listening next to it with a stethoscope while it's running in gear, on a hoist. Sometimes you can also feel it by spinning the tire slowly by hand and feeling for the vibration on the coil spring.

If it's really a whistling noise, check for loose hose clamps on the fresh air tube, and anything else related to the turbocharger.
Jan 21, 2015 at 5:49 PM
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