NHTSA Complaint #11513608 — 2012 KIA SORENTO

I was driving my car on the highway and entered a ramp to another highway and as I began to accelerate again it was like my engine shut down and there was no response to the gas pedal for throttle. I pulled my car over to the side, sat for a moment, and then turned the car back on. I was able to accelerate, but if I accelerate too fast the engine would shut back down. I contacted Kia and they said all recalls have been processed for my vehicle, but now out of nowhere it's hardly driveable. I am still forced to use this car for short distances under a couple miles for work, but the vehicle's engine will try to shut off over 2k rpms. I have maintenance records for every year with this vehicle and I don't get how this just happens. My mechanic says a Knock Sensor is telling the engine to turn off and my local kia store said there wouldn't be anything to do without a recall.