The problem may not be with the engine, but in fact may be a problem wiht the transmission. This is a known problem with the 2002 model.
I don't know you tell me.
spark plug gap Can also be a vacuum leak.
Busted motor mount.
i would really like to know myself
It might be a broken motor mount or transmission mount.
It needs an front end alinement or your tires & wheels need rotated
If it happens when you are driving fast (60-70 MPH) it could be that your wheels are out of alignment.
Sounds like a misfire caused by electric supply to plugs.
Loose motor mounts.
check your motor mounts if not than it might not be your motor but the pavment your driving on.
bent wheels or a broken cord in a tire or a deformity in a tire.
If it only happens when you are braking I would suspect warped brake rotors. Other reasons the front end could shake would include unbalanced tires or the vehicle needing realignment. Whatever the case may be; driving a car in this condition is unsafe and you should repair it or have it repaired before you drive it again.