[ZZcamaro]

I have a mystery sound, or rattle, or grinding sound, in my car that I would like to know what you folks think it could be.

When I start driving there is no problem....but once the car heats up, I get a rattle, or grind sound around the feet area of the driver. It only does it when the car is finally warmed up. It seems to be on the driver's side, and not in the driveline. I figure it has something to do with exhaust, because it did not start until after me did some exhaust work!!

But when I go underneath to check it out, all the clamps are good and tight. I also could not find anything close enough to the exhaust to be rattling! Only think I did not check was how tight the O2 sensors are...but they are tight enough I could not spin them with my fingers.

Again this seems to only be on the driver's side near my feet once the car heats up. Does the stainless move once it is heated? Any input would be very helpful....