a wire could have came loose
speed sensor
The speedometer on a 1996 Honda Accord EX is the pulse variety. It is likely that the teeth on the speedometer gear are not meshing properly.
no cause they are different years, model changed.
A bad tire can cause your 2002 Honda Civic to jerk while driving. A bad ball joint can also cause this issue.
A thermostat
The top speed is 128mph (2006 EX sedan). The speedometer would probably read 130. I drove it at 202 Kmp/h
no compression
Maybe the airfilter
Tires and/or wheels may be out of balance
Lx
Where is the starter on a 1997 Honda Civic?
One of the causes could be a hole in the exhaust