So flashing low coolant light means the pcm is not recieving data or bad data from the coolant temp sensor. so i replaced ECTS and flushed radiator and coolant tank, unpluged battery reset everything and still get the blinking light. temp gauge works fine engines stays at 1/4 to 1/2, so what else may be wrong, its a manual so what about tts? also car will not pass obd self test, it seems the computer will not "hold memory" and yes i've done the drive cycles. perhaps the coolant issue interfears with the self tests? or a pcm problem? Any suggestions!!!???? i've about exhausted all resources and can't afford some mechanic telling me one thing and charging me an arm!!