mileage meter problem

[civic18c]

mileage (speedo) meter problem

help me all sifu
im using b18c gsr auto engine on ek body around 1 year,
but now mileage (speedo) meter going to crazy some time they come up and down
when i want to stop my car.
pls help....to soft the problem t.q

 

[achor]

probably ur speed sensor, out already. does ur check light lights up?

 

[civic18c]

the speed sensor at gearbox?

 

[achor]

i think so. have u checked it out?

 

[hattech-v]

sometime it bcoz of ur faulty speedosensor..
oso can be cause by the poor grounding...

 

[civic18c]

thanks mie