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1998 Ford F-150 Question: 1998 ford f 150 the heater doesnt work.It blows cold air instead of hot

 

Question

gapjohn, 5.4L V8, Cumberland Gap, TN, January 03, 2012, 17:14
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cold instead of hot and kind of warm when turned to aircondision.Blend door is fine coolant is fine thermostat is fine.What is wrong?

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    January 03, 2012, 17:23
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     Master

    low coolant level, thermostat not working, air in system, clogged heater core and bad blend door motor are causes for this.

    Roy

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    gapjohn, January 03, 2012, 18:40
     Rookie

    we checked blend door and flushed heater core it has a new thermostat and plenty of coolant.We seem to have checked all the normal things that cause this problem.Still defrost gives cold air and a/c side on pannel gets warm.Is there anything else any one can think of?

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    mastertech6371, January 03, 2012, 18:41
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     Master

    do both hoses feel hot or is 1 hot and 1 cold?

    Roy

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