Hoping to get some help diagnosing an issue I have on my 2.5i 5spd. About a week ago my car developed a strange vibration coming from the rear. The strange part is it only happens under certain conditions. From a complete stop, up hill, while the car is still cold from sitting overnight or all day.
My neighborhood has a red light at the bottom of a hill. From a complete stop, shifting into first, pressing and gas while lifting off the clutch. This noise coming from the rear almost sounds like something to do with the load on the drivetrain, however, once the car has warmed up it won't do it. Video linked below. Any ideas would be greatly appreciated.