From the short description given the first thing I'd check for would be a broken engine mount.
motor mounts
No
Program a new key and ignition to a 2000 ford focus
how to remove hub assbley from car 2000 ford focus
yes
Where is the temp sensor on 2000 ford focus zetec engine
I have a 2000 Ford Focus it uses Mercon V. Mercon V is what I use in my 2000 Focus with a standard transmission. I have an Automatic 2000 Ford Focus station wagon and the owners manual suggests Mercon V.
Start by having the fuel filter changed.
It's actually in the trunk! You might not believe it but my nephew acually has a 2000 ford focus!
Ford focus with 2.0 eng.zetec
how to change 2000 ford focus quarter glass
do I have to lower the engine to replace the water pump ona 2000 ford focus zetec engine