2007 Mercury Mountaineer Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2007 Mercury Mountaineer
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2007 Mercury Mountaineer ProblemsCoolant Leak/Overheating Due to Radiator Leak
A coolant leak may develop from the radiator. Ford has released and updated radiator and powertrain control module (PCM) software update to address this issue. The software update includes revised cooling fan operating parameters. Failure to complete both service procedures may result in repeated radiator failures.
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.
Our technicians tell us the spark plugs in this engine can be very difficult to remove. Ford has issued a service bulletin (08-7-6) to address this issue, which includes a recommended procedure on how to remove the plugs. Failure to follow the recommended procedure can result in the one or more spark plugs breaking off in the cylinder head.
The recommend procedure is as follows. Using this procedure will greatly reduce the chance of breaking a spark plug.
1. Break the spark plugs loose when the engine is warm.
2. Turn each plug 1/8 to 1/4 turn and soak the treads with 1/2 to 3/4 teaspoon of Motorcraft Carburetor Tune-Up Cleaner or a quality penetrating oil. Do not try to remove the plugs at this time.
3. Let the threads soak for at least 15 minutes.
4. After the soak period, tighten and loosen each spark plug, working it back and forth until the turning effort is reduced. Then, you can remove the spark plug.
There are special tools available to remove the broken spark plugs and repair shops will often charge additional labor time, over and above the quoted spark plug replacement cost, for the removal of each broken spark plug.
2007 Mercury Mountaineer QuestionsI give it a jump and will stay on but after 5mins it will shut off by its self (1 answer)
Why does my mountaineer turn off while its idling and will not start again
Took it to Auto Zone and they said it was the Thermostat. Even took to a dealer and they said same thing. Well we replace the upper and lower housing and reset light. After about 2 days of driving it was back. Took back to get hooked up and again said the Thermostat. We replaced it again all in a...
It is a 4.6 v8