speed sensor
A bad tire can cause your 2002 Honda Civic to jerk while driving. A bad ball joint can also cause this issue.
a wire could have came loose
cause its a civic that Honda makes
Cause it does
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.
Terrible engineering that's why it's a Honda
If a 2001 Honda Civic will not go into gear, the problem is probably the transmission. Otherwise, it may be the shift mechanism that is the cause.
Your 1994 Honda Civic will overheat when the thermostat is malfunctioning. The overheated engine can experience the idle to surge. The engine should be turned off immediately.
A thermostat
Probably age at this point.
The size of tires can effect that accuracy of a speedometer. Larger tires will cause the speedometer to read less than you are actually going.