NHTSA Complaint #11351850 — 2013 KIA SORENTO

2013 KIA SORENTO, 2.4L. I HAVE REPLACED THE ALTERNATOR, ACCELERATOR POSITION SENSOR, AND THE CRANK SHAFT POSITION SENSOR. SYMPTOMS OF THE PROBLEM ARE THIS, AFTER DRIVING TO ACHIEVE FULL OPERATING TEMP, LET THE CAR IDLE FOR 15 MINUTES, PULL OUT AND GET ON HIGHWAY, SLOW ACCELERATION, AND AT 2000 RPMS, THE CAR VIOLENTLY JERKS ABOUT 3 TIMES, TACH GOES TO 1000 RPM, ACCELERATOR IS NON RESPONSIVE BUT ENGINE DOES NOT DIE, AFTER ABOUT 4-5 SECONDS, THE ENGINE BEGINS TO RESPOND NORMALLY, NO CODES ARE CAPTURED, NO INDICATION TO WHAT THE ISSUE IS. I DID BRING MY CAR IN NOT LONG AGO AND THEY RE-FLASHED THE COMPUTER THAT CONTROLS THE TRANSMISSION, AND THIS NEW SOFTWARE MAY BE AT FAULT. IT IS NON REPRODUCIBLE TO DEMO TO THE KIA MECHANIC. BUT CAN HAPPEN AS SAID ABOVE BUT NOT RELIABLY. I PLAN TO GET A FULL ELECTRICAL DIAGNOSTIC OF THE MAIN COMPUTER, THE BODY CONTROLLER, AND TRANSMISSION CONTROLLERS TO SEE WHERE THE FAULT IS. I QUESTION THE HEALTH OF THE MAIN COMPUTER AS NO CODES ARE RECORDED.....SAMPLING RATE SEEMS TO BE IN QUESTION. THIS CAN HAPPEN AT 60 MPH OR 30 MPH, AT LOWER SPEEDS SEEMS LIKE THE ENGINE WILL TOTALLY QUITE ABOUT 30 PERCENT OF THE TIME, OTHER TIMES THE ENGINE CONTINUES TO RUN BUT IN "LIMP MODE" AND NON RESPONSIVE. I SEE THIS AS A SEVERE SAFETY ISSUE, YOU NEVER KNOW IF IT WILL DIE. IT ALSO SEEMS LIKE THE TRANSMISSION IS COMMANDED TO A LOWER GEAR AT HIGH SPEED AND AFTER THE JERKS, THE ENGINE WILL SHUT DOWN SO DAMAGE WILL NOT OCCUR TO TRANSMISSION OR ENGINE. IF ENGINE DOES NOT SHUT DOWN FULLY, IT SEEMS LIKE IT TAKES ABOUT 5 SECONDS FOR THE COMPUTER(S) TO RESET AND RESUME "NORMAL" OPERATIONS. ALWAYS HAPPENS WHEN IN MOTION, NEVER STATIONARY ON CITY STREET OR HIGHWAY AT 60 +MPH.