1998 Mercury Grand Marquis Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1998 Mercury Grand Marquis

1998 Mercury Grand Marquis Problems

The composite (plastic) intake manifold may crack near the thermostat housing and cause a coolant leak. Ford released an updated manifold that was reinforced to prevent a recurrence. No recall was issued for this problem but Ford did extend the warranty to seven years on some models from the date of purchase.

The heater hose outlet may leak coolant at the back of the intake manifold. Sometimes this is misdiagnosed as a leaking intake manifold gasket because it resembles a leaking manifold.

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.

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1998 Mercury Grand Marquis Questions

It's a 1998 mercury grand marquis
It will turn over but won't start
Only the driver side got wet

replaced water pump, hoses, thermostat, radiator,and reservoir bottle...had overheating (1-2 times a week) issues for the last year after heater core replacement...checked for air in system..hose blew so I did all the repairs listed except heater core..now hose to thermostat gets hard and there a...

My 98 Marquis revs up and down intermittently. This will only happen when the car is in idle but in drive AND the heat is on. It does not rev when in park. It seems to subside when temperatures outside are below freezing. I've had a lot of repairs done in the last 2 months. New thermostat ...

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1998 Mercury Grand Marquis Recalls

FORD IS RECALLING 225,000 MY 1992-2003 ECONOLINE, MY 1993-1995 TAURUS SHO, MY 1992-1998 CROWN VICTORIA, MY 1993 BRONCO, F-SERIES, MY 1995-1997 F-SERIES SUPER DUTY STRIPPED CHASSIS, MY 1992-1998 MERCURY GRAND MARQUIS, AND MY 1992-1995 LINCOLN TOWN CAR VEHICLES. THE AFFECTED VEHICLES WERE PREVIOUS...ON CERTAIN PICKUP TRUCKS, PASSENGER VEHICLES, SPORT UTILITY VEHICLES, AND MOTOR HOMES CHASSIS, THE SPEED CONTROL DEACTIVATION SWITCH MAY, UNDER CERTAIN CONDITIONS, LEAK INTERNALLY AND THEN OVERHEAT, SMOKE, OR BURN.VEHICLE DESCRIPTION: PASSENGER VEHICLES USING AFTERMARKET DRIVER'S SEAT BELT ASSEMBLIES THAT WERE SOLD BY FORD PARTS DEPARTMENTS FROM JANUARY 1, THROUGH JUNE 13, 2000. THESE SEAT BELT ASSEMBLIES FAIL TO COMPLY WITH THE REQUIREMENTS OF FMVSS NO. 209, "SEAT BELT ASSEMBLIES." THE EQUIPMENT INVOL...

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1998 Mercury Grand Marquis Reviews

Absolutly the best car I have ever owned. I bought it used with 22,000 miles and have owned it for 11 years. Highway milage usually exceeds 27 mpg with cruise control. Local milage averages 17 mpg. This is the LS model and has automatic temperature control that still works perfectly - and the AC system has never been recharged. I am about to decide on whether to buy another car, or just sp...

I had gotten this car from a older gentalmen and it was pretty well kept up and drivin only in town. worked great when i got it at 80K. Heres the thing i think the old man was smarter than i thought cause almost a week into owning this car i turned into a gas station and the right joint broke completly. car slamed on tire and puff theres the tires and the joint. not to mention the other damages...

GOT 2ND HAND WIFE LOVES IT

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