2005 Mercury Mountaineer Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2005 Mercury Mountaineer
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2005 Mercury Mountaineer ProblemsHeater Stuck on Hottest Setting Due to Broken Heater Blend Door
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.
The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.
The composite (plastic) intake manifold may crack near the thermostat housing and cause a coolant leak. Ford released an updated manifold that was reinforced to prevent a recurrence. No recall was issued for this problem but Ford did extend the warranty to seven years on some models from the date of purchase.
2005 Mercury Mountaineer QuestionsIs my all wheel system messed up or something else like trans or transfer case (1 answer)
It pulls left and right with a humming sound anywhere I drive it is an r title and the check advance trac is on but im not sure if it has to do with that or is it my transmission slipping and its really bad once ive driven it for about 10 minutes on until it cools down again
Checked all the fuses they are all good. What could the problem be