2G 2g dsm driveshaft vibration/noise

[Mikesam]

Recently my eagle talon tsi started make a weird noise / vibration around 3000 rpm. I figured out that the noise was my drive shaft vibrating because of bad u joints. After I installed new u joint the noise / vibration almost went away, but is still there. I can see that the piece of metal that is on the yoke of the drive shaft going into the tranfer case is vibrating while I Rev the car. Does anyone know what that metal piece is called, what it does, and if that play is normal.

You must be logged in to view this image or video.

 

[Mikesam]

You must be logged in to view this image or video.

This is a video of the metal piece on the driveshaft yoke.

 

[dwb]

Does anyone know what that metal piece is called, what it does, and if that play is normal.

Some sort of collar, maybe a debris shield. It is kind of loosely tacked down (bent) in two spots to secure it. I could see it coming loose pretty easily. It has no structural function, just protects the output seal.

 

[Mikesam]

Thanks for the help. I took the drive shaft off and was able to beat it on. Now it doesn't move around.