Hi , So as of the past couple months my car (2005 Acura TL) has been overheating. Initially, I suspected that the issue might stem from a malfunctioning thermostat. Consequently, I replaced the thermostat and coolant and refilled the radiator to its maximum capacity. Initially, the car operated noticeably better for about a day. However, it gradually reverted to overheating, particularly when accelerating. Notably, the temperature would only marginally decrease during coasting or when the vehicle was stationary. After shutting off the engine, the radiator fans continued to run for approximately 3-5 minutes before shutting down. No visible leaks were detected, and the coolant reservoir was consistently filled to the maximum level. The heater produced minimal airflow when on full blast. After turning the car on and letting it idle for about 10 to 15 minutes , no heat was emitted, but once i got the car moving and it started to overheat, heat would eventually come out from the vents, with very little airflow. My theory is that it could be due to a clogged heater core, though I could be wrong. Any insight or knowledge would be very much appreciated. If you have any questions please let me know. Thanks in advance!