Question about 2001 Chevrolet Blazer

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99 expedition front heat blows cold and it overheats...I have changed the thermostat, water pump, and a new radiator...any suggestions?

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  • superlucylu1 Mar 17, 2009

    My 1998 Ford Expedition 4.6 has the same problem. The temp guage spikes up to overheating, but if you continue to drive about half a mile, it drops back down to normal. It never runs right in cold weather. I live in Northern Wisconsin and we have very cold winters. All winter long the heater blows cold air, but once it gets warm out (above 30 F), the heater works great. I have had it to the ford garage twice to flush the coolant system and had the thermostat changed. The ford garage keeps saying it is a bad head gasket, but there is no antifreeze/water in the oil. It also runs too good to have a blown head gasket. My next step is to change both heater cores. Does anyone have any suggestions?

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Make sure that there are no air pockets in the cooling system this can cause cold air and overheating. if this doesn't work you might have to replace the water pump.

hope this helped
best of luck
please rate well

Posted on Mar 04, 2009

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