I was driving today and I turned left and heard a thumping noise so I got home and checked my tension rods and they were fine. so I drive it again and no noise until I pull up in my driveway. Then it made the same noise but I was in park, so I think it's the flywheel, but then I checked the flywheel and it's ok. So my question is WHAT THE HELL IS GOING ON!!
I even checked the driveshaft because that's what it sounds like and sounds like it's coming from but it's not. so any help would be cool.

 

piston slap? rod knock?

 

No it doesn't sound like that it sounds like the driveshaft but it's not.

 

I was checking it closer today and it sounds like a rolling thump noise.
It getsw louder when you sit down in the drivers seat.

 

haha u might have bad u-joints, because when i got done wiht my clutch swap my car was doing that and it still is

 

could the tranny mounts or stabilizer be the cause

 

If by chance you make a short clip video with sound I may be able to help you. What you are describing could be numerous problems...

 

it doesn't make the noise unless some one is sitting in the drivers seat. if no one is in the drivers seat there is no noise. I would record a sound file for you but you cant really hear it that well, butt it sounds or actually feels like the drive shaft, butt it isn't.