Screeching/whistling noise on very low speed

2009 BMW 335
126,000 MILES • 3.0L • 6 CYL • 2WD • AUTOMATIC
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ALEX KANBAR
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I am facing a problem in my car, nobody could find the issue. the noise only comes when car is 100% warm and on very low speed around 10 - 20 km/h (Whistling/screeching noise like an unoiled metal rod turning in a pulley).
Jun 21, 2016 at 3:21 AM
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MHPAUTOS
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Is the noise engine speed related or road speed related? is the noise there if you remove the serpentine belt when the engine is hot? if you try this remember that you will not have power steering so test in a safe place.
Jun 21, 2016 at 2:38 PM
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ALEX KANBAR
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if it helps this is a video of some one having same case as me. https://youtu.be/xfhmvuGBAmI. I replaced two days ago the belt still same sound. I guess its speed related. Please check the video its is exactly what happens to me
Jun 21, 2016 at 10:23 PM
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ALEX KANBAR
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I read few places which are saying that it may be brakes or brake sensors if it is helpful.
Jun 21, 2016 at 10:23 PM
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JACOBANDNICKOLAS
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If it is the brake sensor, it should turn a light on in the vehicle and change pitch when applying the brakes. This vehicle has an electric sensor, one rear and one front brake. When the sensor is touched, it should set the check brake pads light in the vehicle. However, nothing works perfectly.
Jun 23, 2016 at 7:41 PM