NHTSA Complaint #10126598 — 2002 KIA RIO CINCO

APPROXIMATELY 1.5 YEARS AGO I WAS HAVING A PROBLEM WITH THE CAR HESITATING ON THE HIGHWAY AND THE CHECK ENGINE LIGHT COMING ON. I BROUGHT MY CAR TO THE KIA DEALERSHIP (HAMILTON, ON) FOR DIAGNOSIS AND THEY DIAGNOSED THE PROBLEM AS BEING THE MASS AIRFLOW SENSOR. I HAD THEM REPLACE THE SENSOR (250$CAD) AND DO A 300$ TUNE UP ON THE CAR. TWO DAYS LATER THE CHECK ENGINE LIGHT CAME BACK ON AND I BROUGHT IN BACK TO THE DEALER. BY THE TIME I HAD THE CAR AT THE DEALER THE LIGHT HAD GONE OFF AND THEY SAID TO BRING IT BACK WHEN IT WAS ON. FINALLY AFTER A NUMBER OF VISITS THEY DETERMINED THAT THE ECM NEEDED A FLASH. THEY FLASHED THE ECM AND THE CAR SEEMED FINE. APPROX 3 WEEKS AGO THE CAR STARTED HESITATING AGAIN AND I BROUGHT IT BACK TO THE DEALER. THEY FOUND A BULLETIN FROM KIA THAT STATED A PROBLEM WITH CERTAIN KIA'S (WHICH MINE FELL UNDER) WHERE THE ECM WOULD INCORRECTLY INTERPRET RESULTS FROM THE MASS AIRFLOW SENSOR AND TURN ON THE CHECK ENGINE LIGHT. THEY DIAGNOSED THE PROBLEM AS BEING THE ECM AND REPLACED IT, BUT THE PROBLEM REMAINED. THEY FINALLY FOUND THAT THE PROBLEM WAS THE REAR CATALYTIC CONVERTER. THE PROBLEM IS THAT THE INCORRECT READING FROM THE ECM WOULD HAVE MADE THE CAR SEND UNSPENT FUEL THROUGH THE SYSTEM AND INTO THE CATALYTIC CONVERTER THEREBY CAUSING THE CATALYTIC CONVERTER TO FAIL.