How do I fix my Erratic speedometer?
I have a 2004 Kia Optima EX 2.7 My speedometer is erratic. once the car
warms up and you are driving any speed above 35 and take your foot of the
gas, this is when the needle goes up an down and then not moving until the car
is restarted. I changed the transmission speed sensors. What next? Does this
car have a speedometer sensor or do I have to replace the cluster?