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check the air charge. mabey its out.

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Q: 2000 mercury mountaineer has no heat when you turn on the heat the AC just runs Any solutions?
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Why would heat come out when you turn on the air conditioning in Mercury Mountaineer?

the blend door actuater is bad


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Not by back passanger side tire. In front of the gas tank behind a heat shield.


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2004 Mercury Mountaineer heat is blowing cold and making knocking noise?

It is your blend door actuator. Good luck! It is a cheap part but an expensive time consuming fix.


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Whats wrong on a mercury mountaineer with duel controls when the heater only blows cold air?

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2004 mercury mountaineer blows cold air when heat is on?

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