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Mercury Problems

RepairPal has identified the most common problems for 16 Mercury models based on complaints from actual vehicle owners. We'll tell you what the problem is and what it'll take to fix it.

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140
Known Problems

On higher mileage vehicles, one or more EGR orifice in the intake manifold may plug with sludge. This can cause the engine to misfire when first accelerating because too much exhaust gas is directed into the cylinders where the orifice is not plugged. Cleaning the clogged passages should correct this concern.

An oil leak may develop from the the right side head gasket.  Oil from this type of leak will commonly drip onto the starter. Our technician tell us an updated head gasket is available to correct this concern.

The synchronizer shaft for the camshaft position sensor can cause a loud squeak or chirping noise due to failure of the upper bushing. The noise may be erratic and is usually present when the engine is warm.

The exhaust manifold often warps and cracks, breaking off the studs between the cylinder head and the exhaust manifold. A ticking type noise may be noted most noticeable when the engine is cold.

The intake and valve cover gaskets may leak oil.

Valve seats (components in the cylinder head that help seal the valve) can fall out. When this happens, it causes rough running and creates noise. Replacement of the cylinder head is commonly required to fix this problem.

The rear window wiper may not fully contact the rear window. To fix, replacement of both the wiper blade and wiper arm is necessary. 

Transmission problems are common in this model, often as a result of a failed front pump. The pump loses its ability to create hydraulic pressure, which an automatic transmission needs to function. A sign of front pump failure can be a whine type noise.

The instrument cluster (IC) may reset to its default settings when the ignition is turned off. Our technicians tell us revised IC programing is available which should correct this concern.


The electric trunk latch solenoid can get stuck in the open position making it so the trunk will not latch closed. The diagnosing technician should verify correct electrical connection at the solenoid and check for correct cable routing. The trunk latch most commonly will need to be replaced.

Sludge build up in the throttle body can cause a poor engine idle, stalling, and/or hesitation. The correction is to install a new idle air control valve spacer kit to prevent the sludge build up, set the base idle, and clean the throttle body.

Fitment and abrasion of wheel covers to the wheels can cause the wheel covers to make a ticking and / or clicking noise. Lubricating the back side of the wheel covers where they mate to the wheels should correct this problem.

Faulty material in manufacturing could cause the inside door pull handle to break. Both handles should be replaced.

Fitment and deterioration of weatherstripping on mating surfaces of the convertible top can cause water to leak in the interior. The contour of the roof can also contribute to the leak problems. Foam can be added to bolster the contact points where leaks occur and / or the weatherstrips can be replaced where they are deformed.

If the vehicle hesitates or idles roughly after being parked for twenty to thirty minutes, with the engine still warmed to normal operating temperature, you may need to reprogram the PCM (powertrain control module) with new calibration.