I have a front wheel drive and at 120k I had noise in the back. It turned out to be a bad wheel bearing. It was tough to diagnosis because the quick check is to see if the wheel wobbles when pulled, but mine didn't. It wasn't untl they put it on a lift and found the wheel wouldn't roll freely.
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sorry did you get your tires rotated recentley if so that could be the tires ive had that happen to me before by not rotateing my tires for a while if thats the cause noise should go away if that not it its hard to tell you what a howling noise could be from is it only when your driveing and vehicle moveing
The final drive (diff) could be low or out of oil. Have a look around inside of the rear wheels for any oil leaks. Also ckeck the pinion seal. But get oil into the filler plug before you do anyting else.
Hello! This could be from a few things - you could have a differential pinion gear that is misaligned and that will cause a howling noise - or it could also be a wheel bearing. Check your differential fluid and it might be worthwhile changing it.
The problem is almost always caused by the clips that hold the clutch disc in place on the po-sirear-ends.The clip will come lose and catch between the carrier clamp and cause metal parts to be deposited in the housing causing the front and rear pinion bearing to wear. Howling while accelerating is the rear pinion bearing. Howling while decelerating is the front pinion bearing. Sometimes you can get by with just replacing the clips and pinion bearings. Clips can be ordered out of California. For around $70.00 .The dealer will want to sell the entire assembly. Which does not include the pinion and bearings. The longer you go the more damage that will be done. If you can't do this yourself. No one is going to repair just part of the assembly and warranty.
That's what it sounds like to me also. I would put the rear up on jack stands and spin the wheels to male shure wich side it is. Don't forget to block the front wheels for safety as you will not be able to set your e- brake for this test.
As a matter of fact the diff can make noise on and off the gas, my own car a 1996 Corvette does this, it needs the ring and pinion replaced, is this what you are talking about when you say they told you that you needed a whole new differential?