Looking for some wisdom!
My 87 coolant light is flashing. The expansion tank is full no sign of leaking, things look dry.
The temp gage stay at the bottom side move up just a little. 
The strange thing is I pulled the plug off the sensor at the expansion tank and then reseated, light stopped like normal. Put the lid over the motor closed the back door, then started one last time and the light flashing again!
Thanks for the help.
Kevin
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