2008 Mercury Mountaineer Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Mercury Mountaineer

2008 Mercury Mountaineer Problems

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 rear wiper may stop working. This could be due to a rear wiper motor that has failed requiring replacement.

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.

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2008 Mercury Mountaineer Questions

While attempting to remove the trim around the shifter to find the light-bulb I'm getting som resistance on the left side - so if I pry too hard I know it's going to break. What's the trick?

This has happened many times it was suggested to put silicone on the tab on the back of the hood that didn't work plugs have been changed and new coils installed.

Thanks

Today it rolled about 20 feet before I put the brake on.
Is this an extended warranty problem?
Is this situation covered under a recall?
This has been happening on a small scale since we bought
the car 3 years ago. This seems more serious.

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2008 Mercury Mountaineer Recalls

A bolt securing the transmission oil cooler lines to the transmission may not have been sufficiently torqued during assembly. If the oil cooler lines separate from the transmission and transmission fluid contacts the catalytic converter, a fire could start. Dealers will inspect and tighten the transmission cooler line attachment. The recall began August 30, 2007. The Ford recall number is 07S56.

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2008 Mercury Mountaineer Reviews

I have had issues of the car not starting when the starter relay gets hot. Relays in the fuse box under the hood should never get hot, or so hot it burns blisters on your fingers when trying to pull them out. Once I pull the starter relay and let it cool down I reinsert it and the car will start. I have taken it to 2 dealerships, called 2 others and have even written and called Ford and no he...

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