Little late but....sounds exactly like my issue, that would certainly be axle ping! These trannys are tanks, may need an update on older models but they rarely go bad internally even with poor fluid maintenance. Volvo came out with an axle ping bolt which is now discontinued (?idk why?) but you can ...

My radio has never worked correctly. I’ve owned 3 volvos and the radios and speakers have always been great. This radio cuts in and out with audio on radio stations , and CDs do the same. Nothing is loose , I have check fuses. I just figured I’d replace the radio but I’m not sure If I can just plug ...