so this morning I started my 91 at about 10° f and when I started driving I got a scraping noise from the back right corner, I got out and checked to see if it was ice buildup on the arch, I didn’t find any but I assumed there was some on the back of the wheel so I kept driving. Once I got passed 10 mph the dash started making a whining sound and once i got on the highway doing 30 the sound changed to a grinding sound and bounced between 30-60 and sometimes it would fly all the way to 110, and ideas or suggestions would be greatly appreciated