Loud clanking noise

[azyankee7]

Not a good weekend for my cars. Lost the brakes on my 88 735, now a problem with my 2000 740i. I am getting a loud clanking noise from under the car. It is a metal on metal sound. Could this be the center support bearing for the drive shaft.

[purplecty]

Is it only while driving in gear? Post a youtube video link.

[Saj8986]

Noise under car or under hood?
Under car diesel rattle sound could be bad cat....under hood....hmmm.

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[azyankee7]

It is under the car and not a rattle. It is a loud clank, and very repetitive. The faster you go the faster it clanks

[purplecty]

Similar to this?

http://forums.bimmerforums.com/forum/showthread.php?t=1826628

[azyankee7]

That is it, the video with the loud clank.
I just got out from under the car, took the heat shield off and looked around. The cv joint at the diff has some play in it and makes noise when I try and turn it. Should there be any play in it.
The flex joint on the front has a few hairline cracks in it.
I just took the car out for a test ride to try and film the sound and it it gone, no clanking.

[purplecty]

That is it, the video with the loud clank.
I just got out from under the car, took the heat shield off and looked around. The cv joint at the diff has some play in it and makes noise when I try and turn it. Should there be any play in it.
The flex joint on the front has a few hairline cracks in it.
I just took the car out for a test ride to try and film the sound and it it gone, no clanking.

Lol thats how it always goes... Itll come back... I dont think there should be any play...

[azyankee7]

I guess I will order a new cv and flex joint. The center bearing looks ok.

[purplecty]

Check csb... May as well replace for piece of mind since you can get to it while doing the others...