I would suspect speed sensor
check for codes scan speed as you are driving does it show the same as the cluster ??
VEHICLE SPEED SENSOR
The vehicle speed sensor uses a Hall IC pick-up to generate speed signals. (MT models)
This sensor is installed on the transmission case and detects rotating speed of the transmission output gear.
The sensor generates 4 pulses per rotation of the speed sensor driven shaft and send them to the speedometer.
need manual CHECK IT @
Monday, October 27th, 2008 AT 8:26 PM