What would cause a 1998 Kia Sephia LS to not shift?

Answer 1

Simple: If its automatic, save up lots of money and look into having your transmission rebuilt/replaced because it most likely has problems. If its manual: First off, not to sound rude but, SHIFT. If its not shifting and its a manual, well you get the idea. Now if you are driving stick and doing then one of several things are going on: Your clutch may not be working properly, your shift fork may not be working properly, which means look into having your transmission torn apart and looked at. I litterally just had this exact problem, except the car sat for 2 months while i was away, pulled apart then entire center consol, checked all the sensors and everything, figured out it was the prindle on the transmission was frozen. i am now looking into used trannys. if you need to check if your actual cable is frozen just pull off the intake box and intake, take off the bolt on the top of the prindle attached to the cable and try shifting through the gears (AUTOMATIC ONLY) if the cable moves its the prindle and a new tranny is needed.