I have tried replacing numerous thermostats. I was told not to run without the thermostat so I cut the spring and center section out of it. It didn't make any difference.
I have taken off the radiator cap to see if the water pump was working when the engine was at temperature, I can see fluid move through the radiator. The only thing that I haven't done was change the radiator cap. I am running a cap the doesn't have any indication of what the pressure is. I got it from Jim Carter as an original cap.
