something is loose.

[eagelfan92]

I have no clue what is loose underneath my car. It is hard to describe without actually hearing it but I will try my best. When I am driving around at any speed but mostly lower rpms (a lot at high rpms to) with the clutch out letting it coast i hear kind of a grinding/clanking noise and it varies with loudness. Some times when I put it into gear it will make a small clank noise or when i start letting off the clutch and giving it gas from a stop it will make a small clank as well. It never does it while I am using the gas only during deceleration and it doesn't happen every single time. Someone suggested it may be the U joints loose, well I checked the rear one and it seems to be a tiny tiny bit loose and the rubber thing next to it is pretty torn up and it moves a lot when i shake it. also when I shake it right there at the u joint in a twisting motion i can hear it clank. I am pretty stumped on what is making the grinding/clanking noise while I drive.

 

[Kaosjoker]

What you explain sounds like U joints, I would start with changing those.