2006 Lincoln Mark LT Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2006 Lincoln Mark LT

2006 Lincoln Mark LT Problems

Spark Plugs May be Difficult to Remove

Our technicians tell us the spark plugs in the 5.4L V8 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.

Shift on the fly 4WD system not working

The shift on the fly 4WD system may stop working due to a failed transfer case motor. Replacing the Transfer case motor commonly corrects this issue.

Shudder and Noise on Acceleration

A shudder and noise may be noted on moderate to heavy acceleration. This issue is commonly caused by improper driveline angle. In this case the driveline can be re-indexed using shims to create the optimum angle.

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2006 Lincoln Mark LT Questions

Why does my steering go from normal to really hard to easy. Fluid level is good. (1 answer)

While driving the steering wheel became very hard to turn. Hard turns result in a choppy feeling.
While in a turn, gradual turns are easy.
One day the steering returned to normal and there were no issues. Shortly afterwards it returned to very hard choppy steering.

I have been told it co...

I have a 2006 Lincoln Mark LT, The map light on the drivers side is out. (1 answer)

There is no console just a drivers side and passenger side push button lights with the controls for the sun roof in between. There is a plastic ring around the assembly and I cannot find a way to get to the bulbs. I tried prying lightly on the plastic ring but I was afraid of breaking it.

when I shift into 4wd nothing happens and the 4wd light on the dash doesn't come (1 answer)

on. What could be wrong with it?

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2006 Lincoln Mark LT Recalls

The Driver's Air Bag Could Deploy Without Warning

The clock spring jumper wire behind the driver's air bag may come into contact with the lower horn plate, resulting in damage to the wiring. If this occurs, the air bag warning light may illuminate or the driver's air bag could deploy unexpectedly, increasing the risk of injury or a loss of vehicle control. Dealers will replace the jumper wire with a new design, which includes a protective mesh cover. This recall is expected to begin on February 28, 2011.

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