2011 Buick Regal Humming noise

Tiny
JSANFORD
  • MEMBER
  • 2011 BUICK REGAL
  • 52,450 MILES
I have a 2011 Buick Regal, and yesterday out of the blue it started to make a loud humming noise when ever I accelerate. The fast I go the louder it gets. Does anyone have any idea what this could be.
Monday, July 22nd, 2013 AT 5:23 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,858 POSTS
Can't really hear it here; maybe if I step outside. If the noise will occur while the car is not moving, the common suspects are a serpentine belt idler pulley and the power steering pump. You can identify the cause with a stethoscope. If you only hear the noise when the car is moving it is most likely a noisy front wheel bearing. That is also identified easiest with a stethoscope while running the car in gear on a hoist. Listen next to each one. One will sound a little rough but the noisy one will be a lot louder. Sometimes you can also find which bearing is noisy by rotating the tire by hand and feeling the vibration in the coil spring.
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Monday, July 22nd, 2013 AT 9:50 AM

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