Had a coolant leak that we couldn't track down -- not the water pump, the hoses or the head gasket. Turns out that the thermostat was frozen and the coolant was boiling out of the coolant reservior bottle. Relatively easy fix. Now if I can just figure out why the temperature gauge didn't warn me.

John Martin

 

The temp sonsor might be bad or was just reading incorrect because there was no flow on the sensor side.