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Repairpal verified Mercury problems

 

Verified for the Mercury Marauder

Low compression caused by leakage from exhaust valves can cause the check engine light to illuminate indicating an engine misfire. The cylinder head will need to be rebuilt by a qualified machine shop if possible. Please note that this problem will require careful diagnosis because misfires can also be caused by basic ignition components like spark plugs, coils, etc.

3 Reports
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Verified for the Mercury Marauder

The spark plugs may become dislodged from the cylinder heads. A loud popping noise can be heard and a subsequent misfire experienced. The threads on the spark plug ports in the cylinder head(s) can become stripped or missing when the spark plug is dislodged. The threads in cylinder heads may be replaced using “Lock-N-Stitch” aluminum inserts. Our technicians tell us thread replacement is performed when the vehicle is out of base warranty. Vehicles under base warranty receive a new cylinder head.

2 Reports
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Verified for the Mercury Mariner Hybrid

The hybrid models have a coolant pump that cools control electronics. The pump can fail or spin slowly, which causes a Check Engine Light to illuminate and complete engine shut down.

47 Reports
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Verified for the Mercury Mountaineer

The Check Engine Light will illuminate and the engine will idle roughly when cold. There are updated upper intake manifold gaskets to resolve the problem.

7 Reports
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Verified for the Mercury Mountaineer

A rattling noise from the engine may indicate that the timing chain cassette is worn. Our technicians tell us that installing an updated cassette and timing chain tensioner should correct this concern.

24 Reports
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Verified for the Mercury Grand Marquis

Bad spark plugs or an ignition coil can cause ignition misfire, which will illuminate the Check Engine Light.

5 Reports
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Verified for the Mercury Tracer

The distributor may become internally contaminated with engine oil because of an internal seal failure. This causes ignition failure because the distributor cap has filled with oil. If this happens, the car will not start.

9 Reports
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Verified for the Mercury Capri

An alternator pulley, of the incorrect size, installed at the factory can be the cause of drive belt failure and illumination of the battery light. The alternator pulley should be inspected and replaced as necessary if the drive belt brakes. When the new belt installed, it must be adjusted to the proper tension.

10 Reports
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Verified for the Mercury Montego

A defective electronic throttle body (ETB) can cause the Check Engine Light to illuminate and could have limited to no throttle response. Our technicians tall us that replacing the electronic throttle body will commonly correct this concern.

18 Reports
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Verified for the Mercury Grand Marquis

One or more oxygen sensors may fail resulting in illumination of the Check Engine Light.

1 Report
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Verified for the Mercury Cougar

The Check Engine Light can illuminate with codes due to the lack of EGR (exhaust gas recirculation) flow caused by the intake manifold passage plugging up with carbon and oil. The EGR valve has to be removed and the passage cleaned thoroughly. Partial restriction of this passage can cause Smog test failures for the NOx emissions without causing a drivability symptom.

9 Reports
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Verified for the Mercury Sable

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.

3 Reports
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Verified for the Mercury Mountaineer

The intake manifold O-ring gaskets commonly leak, causing stalling and poor idle quality; the Check Engine Light will illuminate.

18 Reports
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Verified for the Mercury Grand Marquis

A spring in the seat belt buckle may wear or fail, causing the airbag light on the instrument panel to illuminate. Failed buckles will require replacement.

41 Reports
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Verified for the Mercury Mountaineer

4wd vehicles may develop a squealing noise coming from the front wheels when driving below 30 mph. This is generally caused by dry excluder seals, lubricating the seals will commonly correct this concern.

10 Reports
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