Humming/roaring

Tiny
LUCKY86BAMA
  • MEMBER
  • 2007 PONTIAC GRAND PRIX
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 209,338 MILES
When accelerating and let off the noise get louder but when turning it almost stops.
Saturday, December 14th, 2019 AT 9:41 AM

1 Reply

Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
More than likely this is a wheel bearing or another bearing. By turning you are loading and unloading the bearing and the fact that it makes the noise when accelerating and decelerating, I suspect it is a bearing in the differential. However, the wheel bearings are easiest to check so I would start with those.

https://www.2carpros.com/articles/how-to-replace-front-wheel-bearings-and-seals

https://www.2carpros.com/articles/car-howling-noise
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Saturday, December 14th, 2019 AT 6:20 PM

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