I have a 96 gsr. The car warms up and doesn't over heat. The system is bled properly but as soon as you drive the car it cools down to cold almost instantly. I was thinking stuck open thermostat. Just wondering if anyone had any other ideas. And help is much appreciated.

 

Replace the thermostat, it is stuck open. 94

 

^^That. Stuck thermostat will definitely cause that problem.