Join Date: Dec 2001
Location: Belleville, Illinois
Thanked 22 Times in 17 Posts
Re: Dana 35 Axle Problems, Please Help!!
This is a guess; this is only a guess. It sounds tire related to me. Could be that a belt wasn't exactly straight when the tire was made, could be that the belt was damaged by a pothole or big rock, could be that you have one tire with a different tread pattern or big difference in the amount of tread.
Differential noises are usually described as a whine, unless there are broken or severly damaged gear teeth in which case it's a crunch crunch sound.
Have a buddy sit in the back and listen for the source of the noise while you drive. Also try swapping tires on one side front to back. Then swap the other side front to back.
In the mid-70s belt problems were common at the Pontiac dealership where I worked. At low speeds, just above walking speed - you could hear a grunch grunch coming from one tire in synch with tire rotation. If the bad tire was on the front it could be felt pulling the steering wheel. For a while a big percentage of cars had at least one bad one, although they didn't show up for a few thousand miles. Finally the manufacturers worked the problems out, but a lot of tires were replaced before then.
Another possible cause would be a dragging, out of round brake drum, more of a whoosh whoosh. That should show up as a hot drum after a mile or two.
Really tough diagnosing a noise from its written description.