NHTSA Complaint #10521884 — 2003 CHEVROLET MALIBU

MY 2003 MALIBU(65000 MILES) STARTED TO IDLE HIGH (2000-2500RPM). WE TOOK IT TO OUR REGULAR MECHANIC SHOP, THEY DECIDED IT WAS THE IDLE AIR CONTROL VALVE, REPLACED IT AND IT WORKED FINE UNTIL EARLY JUNE WHEN IT STARTED IDLING HIGH, INTERMITTENTLY. THE RISING IDLE WOULD START WITH A ROUGH ACCELERATION, THEN THE RPM'S WOULD START TO RISE AND NOT COME BACK DOWN. WE TOOK IT BACK AND THEY COULD NOT GET THE PROBLEM TO RECUR, SO THEY TOLD US TO BRING IT IN WHEN IT WAS ACTING UP, SINCE IT WAS NOT CONSTANT. THEY ASSUME AT THIS POINT IT WAS A FAULTY IAC THAT HAD BEEN REPLACED. 2 WEEKS LATER, IT DID AND WE TOOK IT IN. THE RPM'S WERE CLOSE TO 4000 AND IT WAS STARTING TO OVERHEAT WHILE THE MECHANIC WAS CHECKING IT. THAT WAS ON MONDAY, JUNE 24, 2013. THE MECHANIC REACHED INTO THE ENGINE AND DID SOMETHING TO STOP THE RPMS FROM CONTINUING TO INCREASE. TODAY IS WEDNESDAY AND THEY DO NOT KNOW WHAT THE PROBLEM IS. IF ANYONE HAS ANY INFORMATION ON IF THIS IS A PROBLEM WITH THIS MAKE AND MODEL, PLEASE LET ME KNOW. THANK YOU. *TR