Confusing clunk under back seat?

[sean210]

Just wandering if anyone has an insight of what this could be.
When I am slowing down there is a repeditive clunk under the
back seat. It only does it when I slow down and its not constant.
It only does it every once in a while.

 

[lintlars]

drive shaft steady bearing?

 

[jdub]

More likely the rear u-joint.
Could be the rear section of the driveshaft (it's a double tube w/ rubber connecting them).

 

[Rennat]

could also be the rear diff...

i would check out the driveshaft first.

 

[PROJECT N00b]

drive shaft steady bearing?

Carrier bearing

 

[TooGoode]

Carrier bearing

+1 if you put your hand on the center column right behind the armrest, you should feel it right there....

 

[suprabad]

Yeah, I'd say carrier bearing is the most likely suspect. Jack up the car (use jackstands), get under it and grab the drive-shaft near the carrier bearing and see if there is any play, if there is much, than your carrier bearing is shot. Pretty common for these things to wear out.