Question about 2008 Ford Mustang
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
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Posted on Jan 02, 2017
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
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
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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