NHTSA Complaint #10460105 — 1999 HYUNDAI ELANTRA

I HAVE READ MANY OF THE COMPLAINTS ABOUT THE HYUNDAI. I'VE ELIMINATED PRACTICALLY ALL THE SAME COMPLAINTS ABOUT THE ENGINE PERFORMANCE BY TUNING THE ENGINE EVERY 30 TO 35 THOUSAND MILES. THE GAS MILEAGE AND PERFORMANCE HAS BEEN VERY ACCEPTABLE. YES I TOO HAVE HAD TO REPLACE THE MANIFOLD, MAS AIR SENSOR, AND OTHER SMALL MAINTENANCE PARTS. THE ONLY THING I HAVEN'T BEEN ABLE TO REPAIR IS WHEN I'M SETTING AT A STOP AND IDLING, THE ENGINE TENDS TO OVERHEAT. BUT WHEN I BEGAN TO DRIVE IT QUICKLY COOLS BACK DOWN. MY HYUNDAI NOW HAS APPROXIMATELY 230,000 MILES AND IS STILL IN SERVICE BUT STILL OVERHEATS. ANY SUGGESTIONS? *TR