Question about 2008 Ford Mustang

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I have a noise in the rear end, sounds like an axle bearing going out. I only have 18,000 miles on the car.

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  • Roland
    Roland May 13, 2012

    whew! those answers are enough to send you straight to the repair shop. I think you should give the tires a real good looking over. Irregular wear patterns can cause some serious noise that is often mistaken for bearing noise.

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  • Ford Master
  • 75,005 Answers

Hello
Here is a guide to noises in the rear end/differential
1. Gear noise: Gear Noise starts at about 45-65 MPH, is a steady whining noise that goes away when you let off the gas or accelerate

2. Bearing noises in ring and pinion bearings: If the noise is very loud and seems to be faster than the car is moving and gets much louder as speed increases and is very high pitched then that is a Pinion gear bearing noise. Ring gear carrier bearing (2) noises are lower in pitch and there all the time no matter the speed.

3. Wheel bearing noises: Start at about 15 MPH heard better at low speed, the noise will change when you turn as the load on the axle bearing is increased and decrease, it is a growling noise not a whine.

As a former Ford dealer Mechanic I would like to point out that this kind of failure is covered under your "Powertrain Warranty" this extended part of the factory warranty covers the engine, transmission and differential. Check with your local dealer, but I'm sure you qualify at 18,000 miles

Posted on Apr 07, 2011

  • yadayada
    yadayada Apr 07, 2011

    Here is an aid for easily diagnosing wheel bearing noises from a trusted site I use for technical advice.



    1. DRIVE AT A MANAGEABLE SPEED ON SMOOTH PAVED ROAD. MAKE SURE NO ONE ELSE IS ON THE ROAD WAY. HAVE SOMEONE GO WITH YOU




    2. TURN RIGHT THEN LEFT "DO NOT ****" BUT ENOUGH TO MAKE THE CAR SWAY.



    3. IF NOISE IS LESS WHEN YOU STEER LEFT, LEFT WHEEL BEARING IS BAD ONE.
    IF NOISE IS LESS WHEN YOU STEER RIGHT, RIGHT WHEEL BEARING IS BAD ONE.



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Posted on Jan 02, 2017

emissionwiz
  • 75005 Answers

SOURCE: noise in front end, sounds

You say the rear wheel axles and bearings have been replaced, you mention nothing of the front wheels, you have the symptoms of a front wheel bearing being worn out, remove them and check for pitting in the bearing rollers or the bearing races, I am sure you will find a problem. Hope this helps solve your issue with the bearing noise.

Posted on Jul 28, 2008

  • 49 Answers

SOURCE: intermitant droning noise from rear wheels

Sometimes tires get noisier as they wear out. Check the tread depth on the tires, see how close it is to the minimum. At 43k miles you're probably gonna need new tires pretty soon anyway.

Posted on Aug 04, 2009

  • 454 Answers

SOURCE: is replacing rear axles and seals and bearings

No, it is not common to replace seals and bearings once a year. Something is wrong. It could be low oil, dirty oil, improper installation or something else.

Posted on Oct 29, 2010

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