when i crank my X up after it has been sitting for a while it makes a horrible rattling noise for several seconds. lately it has started to do it momentarily while driving also. i also had a slight belt squeek. so today i checked it out, i ended up replacing 2 of the belts just to be on the safe side and the squeek stopped. the rattle didnt. i think it is one of the pulleys, but i cant tell which one. it seems to be in the middle to drivers side area, just cant pinpoint it. anyone else had this super annoying rattle on cold start-ups? any advice, i dont know what to replace...