Heater blows out cold air this started 2 days ago.Is it the thermostat. on 1999 Ford Windstar

This problem just started a couple days ago.

by in Dallas, TX on February 12, 2012
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3 answers
ANSWER by , February 12, 2012
If it don't run hot,it's not the thermostat.Check the water level in the radiator and if that don't work then the heater core is stopped up.
ANSWER by , February 12, 2012
A leak any where in the coolant system could cause an air pocket in the heatern core.
ANSWER by , November 28, 2012
The fan is broken