Noticed yesterday. Started getting worse today. Something is making a rattling noise. (May be grinding, but i don't think so.)

I can't tell yet where its coming from, other than the front half of the car.

It only happens when the car is warm, and at certain low RPM ranges. (aprox. 1000-1500, and 2200-2700).

Doesn't seem to make a difference if I'm moving, stopped, clutch in, clutch out, in gear, out of gear.

I'm hoping it is just the loose heat shield or something.

Sound familiar to anyone?