this just started this morning, theres a rattle noise comming from the car, it sounds like its comming from under the car near the cat. everytime i hit the acceletrator it rattles and sometimes it rattles when im standing still on a hill, and twice it felt like the shifter or shiftlinkage was gettin stuck, it makes the noise when even when im idiling in my driveway if i hit the accelerator, so i dont think its the tranny, and now all of a sudden this weekend it started to leak anti-freeze so i dont know what is going on with my car any help would be great

 

loose heatshield/rock stuck in heatshields, or your exhaust manifold hanger has snapped off. as to the antifreeze. jack up the car and start it up see where its dripping from. mostlikely a hose is cracked and needs replacing