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1999 Ford Explorer

Question: Heater blows cold air

Question

Visitor, 4.0L V6, Pelham, GA, March 17, 2011, 12:17

Heater blows cold air and after 20 miles or so it will start getting warm. It then starts blowing cold again. It goes back and forth like this while running.

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  • Answer #1

    DaveJHM March 18, 2011, 01:11
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     Master

    Sounds like a classic thermostat issue.

    However, if the engine is hot enough, it could be a temperature blend issue inside the dash.

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