I have a 01 ford focus w/ 68,000 miles and it vibrates a lot when i turn it on everything inside shakes and when i start driveing it doesnt get better it feels like the engine because when i gas it the gas pedal vibrates also

 

I had the same problem on my 2000 ford focus..it ened up being the motor mound next to the radiator fluid tank..try replacing this I bet it will work

 

I replaced all the engine mounts with polyurethane mounts. Now, the engine vibrates a lot but it is well worth the $$. A lot more power is directed to the wheels and it increased my gas milage from 32 MPG to 35 MPG. I wish, I did this change a long time ago because I really really like it.