Rear differential problem?
Any tips on this would help. Our family is expanding and our beloved S-70 is getting cramped. I looked at an 01 Volvo XC70 w/ third row seat yesterday at an estate sale. Great shape, a few dings but no big deal. 122k and runs great. The only problem I noticed is when accelerating at any speed, I can hear a slightly rough sound isolated in the rear, possibly differential. It's not loud or obnoxious, it's just there. Let off gas and silence. I know these had some transmission problems, but the transmission is super responsive. Tires are new all around, so I am not sure if this sounds like differential or somthing worse. Any ideas or suggestions woul be great