No heat on 1993 Ford Ranger

I put in a new thermostat, but the heater still only blows cold air.

by in Memphis, TN on December 13, 2010
2 answers 1 comment
ANSWER by on December 13, 2010
COMMENT by on December 16, 2010
How would I go about unplugging it. Is there any valve connected to the core?
ANSWER by on December 13, 2010
grab the heater hoses at the firewall and if one feels cooler then the other just flush it out with a garden hose,reconnect the hoses then check for heat.i would buy a $4 prestone hydrometer to check for boil over and frezze over protection also.
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