Question about 1998 Ford Taurus

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Heat comes and goes

Flushed coolant 5 months ago. Ever since Fall arrived, and I needed to heat the inside of the car, the heat has been coming and going. So I changed the thermostat last weekend. Still didn't work. Ran water through the heater core to see if that was plugged. Water went through just fine...and the water was clear, not dirty at all. Engine warms up in normal time. Any suggestions?

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  • cook0212 Dec 26, 2008

    Advice was very helpful. I now have heat except for when the fan speed is on the highest setting.

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This is a common problem with the Taurus. You have an air lock in the system. You need drain the rad and open the cooling system at the highest point. This is usually the upper hose on the heater core.Fill the rad very slowly until the coolant comes out of the upper hose connection. Once done run the car with the hose reconnected and the rad cap off.Put a container under the rad filler.Run the car until it comes up to temp.Slowing top off the rad with the car still running. This should do it.

Posted on Nov 29, 2008

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