My kia starter was going bad, so my boyfriend went and got another one from autozone to replace it. Before he replaced it, it was cranking....but it was stalling and getting worst at starting, and now that he replaced it my veh won't crank at all. Also during this time I have had trouble with my ac. It won't blow out until gas is pressed and the minimum then, and finally after about 20 minutes of driving it will kick in normally. Any suggestions?