A failed heater blend door or actuator can cause the temperature control for the HVAC system to stop working. A clicking sound from the dash area would commonly indicate an actuator fault. If the heater gets stuck on the hottest setting, the heater blend door may be broken requiring replacement of the heater box to repair the issue.
Car Problem Reports
Ford Explorer Sport Trac Heater Stuck on Hottest Setting Due to Broken Heater Blend Door
Ford Explorer Sport Trac Problem
18 Reports
Model Years Affected: 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Average Mileage: 75,500 mi (42,000 mi - 112,000 mi)
Verified
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Visitor, 2008 Ford Explorer Sport Trac, 70,000 mi
I had a problem with the heater box blend door also. I also had a clicking sound . There is a small servo that moves it back and forth the gear was stripped I pulled one at the junk yard and replaced it. I actually only changed the gear itself.
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Visitor, 2007 Ford Explorer Sport Trac, 67,000 mi
No heat clicking sound blend door problem
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Visitor, 2007 Ford Explorer Sport Trac, 77,000 mi
After running for a few minutes the passenger side switches to heat and will not go back to cool. If I turn off the engine it may work again.
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Visitor, 2007 Ford Explorer Sport Trac, 56,000 mi
clicking sound started then before I had time to investigate the position 1 and 2 on the HVAC controls do not work anymore.
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Visitor, 2007 Ford Explorer Sport Trac
Passenger side stuck on hot.
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Visitor, 2008 Ford Explorer Sport Trac, 70,000 mi
blend door messed up. stuck on cool air.
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Visitor, 2008 Ford Explorer Sport Trac, 42,000 mi
hasn't been fixed yet dealer wants 1,000 to repair
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Visitor, 2003 Ford Explorer Sport Trac, 112,000 mi
Heater stuck in hottest setting,only thing i can do is cut it off when it gets hot.
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