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.
Resources for the Repair and Maintenance of your 1998 Mercury Grand Marquis
1998 Mercury Grand Marquis
1998 Mercury Grand Marquis Problems
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.
Certain police, fleet, and natural gas models may experience lower ball joint wear, requiring replacement in the front. This was a safety recall.
The alternator may get too hot, causing premature bearing failure.
1998 Mercury Grand Marquis Recalls (Recent)
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES. THESE VEHICLES HAVE JACKING INSTRUCTIONS WHICH, IF FOLLOWED, COULD CAUSE THE VEHICLE OPERATOR TO PLACE THE JACK ON A FRAME WELD WHEN ATTEMPTING TO RAISE A REAR WHEEL. IF THE VEHICLE IS JACKED UP WITH THE JACK PLACED ON THE FRAME WELD AND IF THE VEHICLE IS FREE TO ROLL (WHEELS NOT BLOCKED OR CHOCKED), THE JACK COULD YIELD AND THE VEHICLE MAY DROP SUDDENLY.Learn more »
Summary: VEHICLE DESCRIPTION: PASSENGER VEHICLES USING AFTERMARKET FRONT PASSENGER SIDE 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 INVOLVED IS SERVICE STOCK SEAT BELT ASSEMBLIES, MODEL NOS. H 9977, H 9979, T 9063, AND T 9217, BUILT BY TRW VEHICLE SAFETY SYSTEMS, INC. (TRW) MANUFACTURED FROM JUNE 1, 1998 THROUGH MAY 21, 2000. SOME OF THESE SEAT BELT ASSEMBLIES MAY HAVE BEEN INSTALLED AS SERVICE REPLACEMENT EQUIPMENT ON THE VEHICLES INVOLVED IN THE RECALL.Learn more »
Summary: 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 INVOLVED IS SERVICE STOCK SEAT BELT ASSEMBLIES, MODEL NOS. H 9977, H 9979, T 9063, AND T 9217, BUILT BY TRW VEHICLE SAFETY SYSTEMS, INC. (TRW) MANUFACTURED FROM JUNE 1, 1998 THROUGH MAY 21, 2000. SOME OF THESE SEAT BELT ASSEMBLIES MAY HAVE BEEN INSTALLED AS SERVICE REPLACEMENT EQUIPMENT ON THE VEHICLES INVOLVED IN THE RECALL.Learn more »
Summary: 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.Learn more »
Summary: 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 PREVIOUSLY REPAIRED USING A WIRING HARNESS THAT IS NOT COMPATIBLE WITH THE VEHICLE CIRCUIT POLARITY.Learn more »
1998 Mercury Grand Marquis Questions and Answers
green o/d light is coming on and when it does, does not shift into whatever gear it should.
Will changing transmission fluid help?
126, 887 mi.
my lifters started tapping on top right side would i need to replace them all?
Does me car and front and rear brakes and if so do they usually need replacing at the same time?
manuel says to grease the steering stops, but no one knows where they are
1998 Mercury Grand Marquis Reviews
Bought used with 80,000. Now has 158,000. 28-29 MPG hiway,20 everyday.Has never failed to start or broken down on road. Some electrical issues,hazard switch,power window switch,door ajar sensor. Love this car.
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 this probably caused that i dont know about. shortly after that intake cracks. now with 110k the im almost 100% sure that the trany is messing up too. and its a complete gas hog.
I FINALLY UNDERSTAND WHAT FORD STANDS FOR FOUND ON ROAD DEAD. IT IS TRUE. SINCE I HAVE OWNED THIS CAR HERE IN SOUTH FLORIDA AND WAS GARAGE KEPT THE HEATER CORE LEAKED ALL OVER THE PASSENGER SIDE CARPET,REPLACED LANDAEU TOP, ALL INTERIOR LEATHER ROTTED WITH OIL,FOUR RADIOS,ROOF FABRIC SAGS,OIL GAUGE FLUCUATES AND BRAKE LIGHT GOES ON AND OFF. INTAKE MANIFOLD CRACK AND NEEDED REPLACED,IGNITION COIL ON CYLINDER WENT,FRONT SUSPENTION NEEDED REPLACED ONLY 90K MILES,TRANSMISSION SHUDDERS AT 97K NEEDS REBUILD,EMERGENCY HAZARD SWITCH WORKS SOMETIMES. ALSO IN THE MIDDLE OF THE ROOF IT RUSTED.TAIL PIPE RATTLES AND HAD TO CUSTOM MOUNT MADE. DOES THE ABOVE REPAIR HISTORY SOUND LIKE QUALITY IS NUMBER ONE. THIS CAR IS THE WORST PIECE OF S__T IN THE WORLD.FORD WILL NEVER CHANGE ITS THE CULTURE IN DETROIT. BUY JAP-GERMAN-
P.S. FORGOT TO MENTION I WENT THRU A POND OF WATER AFTER A RAIN AND
THE FUEL PUMP SHORTED AND DIED. $640.00 GOD I LUV AMERICAN CARS
SIGNED SUICIDEL TENDICIES.
GOT 2ND HAND WIFE LOVES IT
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 spend the money to take care of some overdue maintenance. I am leaning toward doing the maintenance. At 140,000 miles, this car has a lot of life left.