Question about 2004 Mercury Mountaineer

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Moaning noise coming from rear axle at 65mph+ very loud 2004 Mercury Mountaineer whats the cause?

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Sounds to me like the differential. Check and add fluid, the driveline t's off at the rear axle, and there is a nut that your socket wrench should fit into (without a socket). Stick your finger in there and the fluid level should be to hole level.

Posted on Jul 29, 2010

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Posted on Jan 02, 2017

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1 Answer

What could be causing the noise we hear when reaching 40 MPH on our 1999 Mercury Mountaineer, it sounds like when you are reaching a toll booth and the speed strips on the road warn you to slow down.


Sounds Like an Axle going bad or an axle Bearing, Where is the Noise ?
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More noise on turns? or graded pavements?
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I have a 2006 Honda Element that has always made a clicking noise in the rear every time I turn sharply (into a parking stall for example). Also there is a loud whirring sound that is also present that...


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Humming sound while driving


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Jun 30, 2012 | 2004 Mercury Mountaineer

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When I get up to about 65-70 mph with my 2004 Lincoln Navigator it makes a humming noise... very annoying.. Can anyone help me with what this is and how I can get it fixed?


Unfortunately, this is a somewhat common problem. Ford has issued several Technical Service Bulletins related to rear end noise. Without an extended warranty, this is something you will have to pay for.
TSB 05-23-3 11/28/05 REAR AXLE NOISE REPAIR FORD: 1997-2005 Expedition, F-150 2002-2005 Explorer LINCOLN: 1998-2005 Navigator 2003-2005 Aviator MERCURY: 2002-2005 Mountaineer
ISSUE:
Some vehicles may exhibit an axle whine or hum during acceleration, deceleration and/or cruise.
ACTION: An axle repair kit has been developed which incorporates most parts required for a comprehensive axle repair. The kit should be used instead of installing a complete axle assembly to repair an axle whine/hum. Replace Ring and Pinion with Axle Kit and Components.

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I have a 2004 Mercury Mountaineer. Sometimes when


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sounds that something is wrong with your left axle. maybe they forgot lubrification when installing. see a mechanic before this axle gets damaged if it has not allready happend

Jun 03, 2009 | 2004 Mercury Mountaineer

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