2007 Lincoln Navigator Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2007 Lincoln Navigator
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2007 Lincoln Navigator ProblemsCheck Engine Light due to Water/Coolant in Spark Plug Recesses
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.
In high dust areas, problems with the EGR system are common. The filter for the EGR solenoid may plug and cause the EGR to activate when it should not; this can cause the engine to stall. The dirty filter should be replaced to correct this concern.
2007 Lincoln Navigator QuestionsWhy does my wrench light keep coming on (1 answer)
When I start the car and close the doors i can hear the suspension pump turn on, right behind the passenger headlight. After a few min of running the check air suspension message turns on and the pump turns off. The front is fine but the rear end is low and makes for a bouncy ride. I've read ...
Just had a new battery installed
2007 Lincoln Navigator RecallsInside Door Handle Spring May Fail
The interior door handles have return springs that may fracture, which can prevent the handles from returning to the closed position. In an accident, the door may open, which could result in injury to occupants. Dealers will replace the interior door handle springs on the side doors. The Ford recall number is 08S03. This recall began on March 5, 2008.