Question about Cars & Trucks
The thermostat is not what regulates the heater in the car! It only regulates the flow of water to the front radiator to cool the engine. Your problem is with the heater core under the passenger side of the dashboard! If the heater valve that is mounted on one of the two hoses that go through the firewall is not functioning, hot water from the engine will not get to that core and the inside fan will deliver cold air. Get it checked out, now that you know (and hopefully, understand).
Posted on Jan 14, 2013
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Posted on Jan 02, 2017
SOURCE: heater blowing cold air
squeeze the hoses to get any air bubbles out and refill coolant as necesary. are you sure you put thermostat in the right way? may be backwards. also may be your sensor.
Posted on Jan 04, 2009
you have a blend door actuator that may be bad. Its a little motor that can be a bear to swap out. Unless your pretty mechanically inclined and have the right tools you may want a shop to diagnose this to be sure.
Posted on Dec 29, 2009
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