Wierd Clunk sound under car

[95_indiblue_sho]

I've noticed sometimes after I start my car, there is a sort of clunk sound. It seems like it is coming from directly below the center dash on the underside of the car. I doesn't do it all the time and sometimes it is louder than previos times.

Any ideas?

 

[Blue-By-U]

Do you ever hear this clunk while driving/turning?

 

[95_indiblue_sho]

Nope, only a few seconds after start up.

 

[TYSHO]

Rod bearings? shrug