Speedodmeter not working on 1999 Kia Sportage

possible a faulty vehicle speed sensor(VSS) as it reports to all those functions
run the fault codes for a check

http://www.kia-forums.com/cerato-2003-2008-spectra5-2004/77687-2006-kia-spectra-speedometer-not-working.html

The signal to your speedometer comes from the transmission cover. When they changed the clutch they probably had to unplug the speed sensor.
Hope this helps.

The transmission speed sensor mounts in the side of the transmission. It has a wiring harness plug and is held in with a bolt and bracket.
What did you replace ??

http://www.kia-forums.com/1g-2001-2005-rio/49008-2004-kia-rio-starts-idles-but.html

The speedometer and rpm gauges are operated by sensors instead of cables on your model. It is very possible that either your sensors are not hooked up to your tranny or that they are in need of replacing. Check all fuses.

try checking tps_throttle posistion sensor or idle speed control sensor.

assuming the instrument cluster is ok check the output shaft sensor on the transmission. It sends the signal for speed of output shaft which is translated into mph.

Your Vehicle velocity sensor has gone bad or the wire harness has gone bad. Check the wire harness first and if that is good, then replace the sensor. You can find the sensor on the transmission out put shaft on the drivers side. Good luck and keep me posted, be glad to help.

replace the transmission speed sensor.