Question about 1994 Ford Thunderbird

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Over heating My 3.8L over heats but when it does the heater stops blowing hot air. To me it seems that it air locks. I've changed the thermostat and bled the air when I top up the antifreeze. Once I top it up it works fine for about a week sometimes a month. I haven't noticed any leaks or seen any antifreeze in the interior where the heater core is. I have noticed hearing the coolant circulate through the heater core when I start it. Could my heater core have a small enough leak to cause this problem or could I have a head gasket failing?

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U have leaking head gaskets, all to common on the 3.8 V6
My experience: 20 years as a Ford dealer mechanic, 10 years as a Ford certified Master Technician.

Posted on Jan 15, 2009

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