1979 Ford Bronco Heater Blowing Out Hot Air Turn On Just Pushes Cold Replaced

1979 FORD BRONCO
308,000 MILES
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my heater isnt blowing out hot air i turn it on and it just pushes out cold air i just replaced the thermastat and put fresh anti freeze in and still doesn't blow warm or hot air
Dec 22, 2012 at 4:33 PM
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HMAC300
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if you have a water valve on engine check to see that both hoses are hot where they enter/exit heater. if one is cold and leads to wter vavle replac eit. check for a vacuum leak on hoses inside truck as well as one leaading to heater.
Dec 22, 2012 at 5:52 PM
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