2008 Kia Sorento loses power. ESC light illuminates as well as check engine light. Vehicle will not accelerate to more than about 40-45 mph. If I pull over to a stop and turn the engine off and then restart the engine the problem sometimes resolves itself. Sometimes I find the fuel cap is loose and without turning the engine off I tighten the cap and this resolves the problem. I bought this vehicle in June 2009. It was used with about 12,000 miles on it. The first time this happened my son had it on a trip and he called in a panic while driving in a large city with heavy traffic. That was in the summer of 2010. The problem was resolved by tightening the fuel cap as he told me he had just filled it with fuel. During the summer of 2011 the problem has become much more frequent, nearly a weekly event for either my wife or me. Thankfully we live in a smaller city where traffic is lighter and it is easy to pull off on a side street to do the "shutdown/restart" procedure.

- Sioux City, IA, USA