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Humming Noise

Tiny
PCDRAFTER
  • MEMBER
  • 2003 MERCURY MOUNTAINEER
  • 6 CYL
  • AWD
  • AUTOMATIC
  • 83,000 MILES
I own a 2003 Mercury Mountaineer. I have noticed a very loud humming noise that is coming from the front passenger side. This noise only happens when I'm moving. The noise goes away when I turn right and also when I'm moving in reverse. I have no idea what this could be and any help would be appreciated.
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Wednesday, February 2nd, 2011 AT 4:11 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,908 POSTS
Wheel bearing is noisy. They sound like an airplane engine. Be aware it can be impossible to tell which side is noisy. Both of your observations do indeed suggest the right front wheel bearing, but it can still be the left one. It's common for the noise to transmit to the other side. The best thing to do is listen next to each bearing with a stethoscope while the vehicle is jacked up and running in gear.

Caradiodoc
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Saturday, February 5th, 2011 AT 1:27 AM

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