Rear End Shakes.

[wastefuldreamer]

Need Help with a problem Ive been having. When I launch my car (90tsiAWD) or i shift hard into 2nd i get this shaking almost vibration from the rear end of my car and once i hit the top end of third its gone. I have no clue what the problem is so any help is appreciated. I dont know if this could cause anything but, I just did my clutch but all the bolts are secure and every seam is perfect. The vibration only happens when i beat the car, daily driving its fine no shakes no shimmys.

 

[killerquake]

kinda sounds like your driveline. maybe its a little loose. also, does it make any type of thumping when you launch?