One problem related to cooling fan has been reported for the 2013 Kia Motor Optima. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2013 Kia Motor Optima based on all problems reported for the 2013 Optima.
While accelerating vehicle would lose power even though gas pedal was pressed. There were no rpms showing at all no matter what speed I was driving. Car would accelerate until engine power lost, I would let off the gas, car would shift hard and then I could accelerate again until just prior to next gear. Same thing would happen. Also, when this occurred, I lost all air conditioning cooling. Fan would blow but no cold air. . Drove fine prior to this happening and drove fine after car sat over night. Haven't been able to duplicate issue but have video and pictures showing no rpm, but travelling/ accelerating.