2002 TOYOTA AVALON Engine And Engine Cooling Problems

WHILE DRIVING HOME ON 9/24/13 MY CHECK ENGINE LIGHT CAME ON, I DROVE RIGHT TO THE TOYOTA DEALERSHIP. I WAS INFORMED THAT THE CATALYTIC CONVERTER SYSTEM WAS BELOW THRESHOLD ( CODE P0420). THIS REPAIR COST ME $2,541.27. I WAS TOLD THIS WOULD CORRECT THE PROBLEM WITH MY AIR BAG LIGHT FLASHING. AFTER PAYING FOR THIS REPAIR MY AIR BAG LIGHT CONTINUES TO FLASH, EVEN THOUGH THE SERVICE REPRESENTATIVE SAID THE DIAGNOSTIC DID NOT SHOW A CODE. I WAS PREVIOUSLY TOLD THE CODE FOR THE AIR BAG WAS B0113. SINCE PURCHASING THIS 2002 AVALON I HAVE HAD TO HAVE THE VALVE ASSY, IDLE REPLACED AT A COST OF 978.63, THIS IS IN ADDITION TO REGULAR SCHEDULED SERVICES. I HAVE OWNED OTHER CARS FOR THE SAME LENGTH OF TIME AND MILES AS THIS TOYOTA AND I HAVE NEVER HAD SO MANY PROBLEMS OUTSIDE REGULAR SERVICES WITH ANY OF MY OTHER VEHICLES (MAZDA...

IDENTIFY WHETHER OR NOT ELECTRONIC THROTTLE CONTROL SYSTEMS ARE INSTALLED ON MY 2002 TOYOTA AVALON AND 2003 TOYOTA SIENNA. IF ELECTRONIC SYSTEMS ARE PRESENT, ARE THEY DEFECTIVE? CAN NHTSA DECLARE THAT IF ELECTRONIC THROTTLE CONTROLS ARE PRESENT, THAT THEY ARE SAFE TO OPERATE? MY 2002 TOYOTA AVALON ALSO HAS A KNOWN DEFECT (ENGINE OIL GEL ISSUES) WHICH TOYOTA MANAGED TO AVOID A RECALL. WILL TOYOTA REPLACE MY ENGINE IF THE ENGINE FAILS DUE TO THIS KNOWN DEFECT? DID THE NHTSA EVER ISSUE A RECALL DUE TO THIS DEFECT? *TR

THIS IS TO REPORT 3 INCIDENTS OF UNINTENDED ACCELERATION OF MY TOYOTA AVALON. IN EACH INCIDENT, THE CAR ACCELERATED UNEXPECTEDLY FOR A SHORT TIME WHILE DRIVING ABOUT 55MPH ON A SMOOTH LEVEL HIGHWAY. THE ACCELERATIONS EXPERIENCED CAN BE BEST DESCRIBED AS A "LUNGE". THESE INCIDENTS WERE NO IMPACT ANOMALIES. THEY ARE BEING REPORTED NOW FOR THE FIRST TIME TO SUPPORT YOUR INVESTIGATION. *TR