big AC problem i think
 

I own a 2004 RX8 AT.... when i turn on my AC and have it on for about 5 mins. It starts making some noise, the noise is like a deep rumble.. and it viberates the car.. i can feel it in the drivers seat. I need some help. ( yes ive tried searching but the threads i have didnt anwser my question)..

Thanks,
Nick

Maybe a bad motor mount

^ That's what I was going to say.

damn if it ends up being motor mounts its gonna be my 5th set... (all the motor mounts were replaced under warranty. but now iam out of warranty. how can i tell if the motor mounts are bad? any pics of bad ones? or what should i look for?

If they are bad go to www.mazsport.net and get a set of there motor mounts. They are stronger and cheaper than OEM ones