2006 Kia Sportage started cutting off occasionally when slowing down or stopping at 47,000 miles. It now (at 53,000 miles) has also started acting like it is losing power and then trying to go into passing gear (this happens at normal speeds). I had some work done by my mechanic on it ($200.00 worth), but I lost my paper and can't remember what it was. Last things done was 3 cans of seafoam added when I filled up and also throttle cleaned. When the auto first started having problems, I took it to the dealership. The check engine light was on but they said the code they got wasn't causing the problem. They said they could do almost $500.00 worth of work but didnt know if that would fix the problem. The car also cut off when the mechanic drove it. They did say there was a recall because of ESP light staying on. They fixed it and within a week it was back on. Air bag light is on also. Any ideas about the cutting off problem or acting like its going into passing gear?