HELP!! 2000 F250 no heat and the fan only works on high. Changed thermostat and blower motor resistor. Still doesn't work. Now a new problem. When I added water and and anti freeze to the over flow reservoir the liquid ran out immediately on the ground. Any suggestions??

 

Sure.

First locate and fix that leak!

Pop

 

The leak was around the thermostat. I installed a new O ring at the same time I installed the thermostat. I have since bought some sealant to put around thermostat. So far it seems to be holding.
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