2004 Kia Optima

2004 Kia Optima 4 cyl Two Wheel Drive Automatic 45000 miles

My Kia has approx 45K miles on it, the speedometer has began jumping, it will get to the speed that I am at then it will fall back to Zero, sit there for a while then jump back to a speed, not sure if it is the correct speed or not, what could be causing this problem, I hope nothing could be wrong with the transmission since I have not had the car that long and it only has 45K miles on it. Is this possibly an easy fix if so what is the estimated cost. Could you recommend a car place to take to have inspected.

Thank You
January 22, 2008.

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