2002 escort se problems..

hello,
i recently bought a 2002 ford escort. i noticed when i'm stopped or in reverse my whole car vibrates. it feels like it's coming from below me. i'm thinking it could do with my exhaust. i noticed my muffler has a hole in it.. anybody know what it may possible be??

is it auto or 5spd? the auto ZX2's idle rough as hell, but better plugwires fix it up rather well

I have an auto and mine does the same thing. I have a 2002 escort . I have no idea but it isn't my muffler or exhaust. Sorry I can't help but if you find out why please tell me.