Generally if the odometer works and the speedometer does not, the problem is with the cluster. If the instrument cluster passes the self -diagnostic test but the speedometer still remains at certain speed or operate erratically, the problem is with the VSS. Good news is that you allready changed that one so, the neste thing to check for is the VSS circuit.
Check the wiring back to the sensor for short or open.
One thing, make sure that the vehicle is equipe with the proper gear ratio and tire size as either one of these can affect speedometer operation.
Saturday, October 17th, 2009 AT 5:29 PM