My Kia optima LX 2004 with 130000 has problem with speedometer. After I drive about 7-8 minutes the speedometer needle up and down. Sometimes it stays on zero, but the odometer(rpm still work great).And when I drove with cruise the car lost it cruise. What is the problem of it? Is it because of speed sensor or other problem? If because of the speed sensor, where the location of speed sensor? Which one the input or the output speed sensor? Please let me know. thansk
Cars & Trucks - Kia - Optima - 2004 Kia Optima