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Newest reported 2003 Mercury Mountaineer problems

Vacuum leak from intake manifold O-ring gaskets

for the Mercury Mountaineer

The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.

12 Reports

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Heater Stuck on Hottest Setting Due to Broken Heater Blend Door

for the Mercury Mountaineer

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.

44 Reports

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A Cosmetic Crack May Develop on the Liftgate

for the Mercury Mountaineer

A cosmetic crack may develop on the plastic liftgate trim panel. Our technicians tell us the Ford has released a service procedure to replace the applique without damage the the liftgate glass.

106 Reports

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