I have a 7 speed Honda fit gd3,it works fine ,gears shift from gear one to 7 but the speedometer is unstable ,showing wrong speeds and also the odometer keeps on counting even when the car is stationary.At times when moving at a higher speed,the car stalls/jerks.A diagnostic machine identified abs sensors at one point ..the abs light is on.Could the abs wheel sensors be the challenge affecting speedometer or odometer or the transmission to cause jerks/stalling ?.Furthermore ,could the transmission speed sensor also be a faulty ?