I just bought a '97 Kia Sephia 5 speed, and it idles very low. When I am idling with the air conditioner on high it will stall. I have asked a few people about this and they have told me that there is usually a screw near the throttle that you can turn to increase/decrease the gas flow into the engine. One of the people have also told me that some cars do not have this screw and the only way to change the idle point is to bring it to a mechanic and have them do it for you. I was wondering if I would be able to change the idle point on my car, or if I would have to bring it to the mechanics to have it done. If I can do it myself, where is the location of the screw used in this and how much should I turn it?