I have a strange sound coming from under the car when I drive it. The more the accelerate and more speed I get the louder it gets. The sound is pretty hard to explain it's sort of like a rattle but not really. Any ideas?

 

Is it like a thumping sound?? How are your U-joints?

 

Its only happen when the wheels spin. And I don't know what U-joins are.

 

I would look at the Drive shaft... could be the joint is starting to fail...

 

only happens when the wheel spins.....wheel hub?

 

If you don't even know what u joints are then probably not much good in trying to diagnose a problem yourself that you can't fix anyway. Take it in and have it looked at.