1984 Mercury Marquis problems
The Mercury Marquis is a model line of automobiles marketed by Mercury from 1967 to 1986. Deriving its name from a title of French nobility, the Marquis was introduced as the divisional counterpart of the Ford LTD; four generations of the two model lines were paired through rebranding. Initially slotted as the flagship Mercury full-size range (above the Monterey), the Marquis would serve as the basis for the later Mercury Grand Marquis.
The first three generations of the Marquis were full-size sedans (alongside the Mercury Colony Park station wagon). For the fourth generation, the Marquis became the mid-size Mercury sedan, following the 1983 split of the Marquis and Grand Marquis into distinct product lines. As Ford Motor Company expanded its use of front-wheel drive, the Marquis ended production after the 1986 model year, replaced by the Mercury Sable (the Mercury counterpart of the Ford Taurus). As the Grand Marquis, the nameplate continued on until the closure of Mercury during the 2011 model year.
For its first three generations, the Mercury Marquis was produced by Ford in Hapeville, Georgia (Atlanta Assembly), Hazelwood, Missouri (St. Louis Assembly), and Pico Rivera, California (Los Angeles Assembly); the fourth generation was produced by Atlanta Assembly and in Chicago, Illinois (Chicago Assembly).
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Common 1984 Mercury Marquis problems
Based on the complaints from owners of the Mercury Marquis 1984, several common problems have been reported. Here is a detailed list of these issues:
- Poor Acceleration: Owners have reported poor acceleration in the 1984 Mercury Marquis. This problem can be frustrating for drivers as it affects the car's performance and responsiveness.
- Burning Oil Smell: Another common complaint is the presence of a burning oil smell in the 1984 Mercury Marquis. This issue could indicate oil leaks or other engine-related problems that need to be addressed promptly to prevent further damage.
- Fuel Injectors Stop Working: Owners have reported instances where the fuel injectors stop working in the 1984 Mercury Marquis. This can lead to engine misfires, poor fuel efficiency, and overall drivability issues.
- Running Hot: Some owners have experienced the 1984 Mercury Marquis running hot. This could be due to cooling system malfunctions, such as a faulty thermostat or radiator, which need to be inspected and repaired to prevent overheating.
- Surges: Surging while driving has been reported in the 1984 Mercury Marquis. This issue can be dangerous as it affects the car's stability and control, potentially leading to safety hazards on the road.
- Car Shuts Off at Idle: Owners have complained about the 1984 Mercury Marquis shutting off at idle. This can be a frustrating issue, especially in traffic or at intersections, and may point to problems with the engine or fuel system.
These reported problems highlight various issues that owners of the 1984 Mercury Marquis have faced. Addressing these concerns promptly through proper maintenance and repairs is crucial to ensure the vehicle's optimal performance and longevity.
What was the worst year of the Mercury Grand Marquis?
Years to Avoid
- 2003. ...
- 2005. ...
- 1997. ...
- 2004. ...
- 2007.
What engine is in a 1984 Mercury Grand Marquis?
Ford 5.0 L Windsor V8
Powertrain
| Engine name | Years available | Horsepower |
|---|---|---|
| Ford 5.0 L Windsor V8 | 1983–1991 | 130 hp (97 kW; 132 PS) (1983) 140 hp (104 kW; 142 PS) (1984-1985, US) 155 hp (116 kW; 157 PS) (1984-1985, Canada) 150 hp (112 kW; 152 PS) (1986-1991) |
| Ford Windsor V8 | 1986–1991 | 180 hp (134 kW; 182 PS) |
How many miles can you get out of a Mercury Marquis?
200,000 miles
They will go 200,000 miles easily .
What is the life expectancy of a Mercury Grand Marquis?
Grand Marquis drivers typically report a minimum lifespan of around 200,000 miles before the more expensive repairs start to add up. That's not a terrible life expectancy, but these cars frequently hit the market with more than 150,000 miles on the odometer, so shop around for low mileage.
What was the worst year of the Mercury Grand Marquis?
Years to Avoid
- 2003. ...
- 2005. ...
- 1997. ...
- 2004. ...
- 2007.
What engine is in a 1984 Mercury Grand Marquis?
Ford 5.0 L Windsor V8
Powertrain
| Engine name | Years available | Horsepower |
|---|---|---|
| Ford 5.0 L Windsor V8 | 1983–1991 | 130 hp (97 kW; 132 PS) (1983) 140 hp (104 kW; 142 PS) (1984-1985, US) 155 hp (116 kW; 157 PS) (1984-1985, Canada) 150 hp (112 kW; 152 PS) (1986-1991) |
| Ford Windsor V8 | 1986–1991 | 180 hp (134 kW; 182 PS) |
How many miles can you get out of a Mercury Marquis?
200,000 miles
They will go 200,000 miles easily .
Why did they stop making Mercury Marquis?
As Ford Motor Company expanded its use of front-wheel drive, the Marquis ended production after the 1986 model year, replaced by the Mercury Sable (the Mercury counterpart of the Ford Taurus).
1984 Mercury Marquis car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Mercury Marquis problems, we found that the most common problems with these 2023 model year vehicles are:
- Electrical system problems
- Power train problems
- Fuel system problems
- Structure problems
- Other problems
The graph below shows statistics for all 1984 Mercury Marquis vehicle components and the number of complaints received.
1984 Mercury Marquis complaints
The NHTSA has received 14 complaints about various vehicle components related to the 1984 Mercury Marquis.
POWER TRAIN,EQUIPMENT PROBLEM
- Date Of Incident: 2003-02-03
- VIN: 1MEBP8932EG
- Components: POWER TRAIN,EQUIPMENT
- Summary: I PURCHASE A USED VEHICLE ON 2-03-03 AT 11:OO AM I WAS ENSURED THAT IT WAS A GREAT VEHICLE. ABOUT 5:15 PM I WAS ON THE FREEWAY, AND IT STARTED TO SMOKE AND IT LOOSE COMPRESSION. I HAD SPOKE TO THE DEALER AND HE STATED THAT IT WASEN'T HIS PROBLEM. I FEEL THAT I WAS SOLD A UNSAFE VEHICLE.
POWER TRAIN,ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2000-09-02
- VIN: 1MEBP893XEG
- Components: POWER TRAIN,ELECTRICAL SYSTEM
- Summary: VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
POWER TRAIN,ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2000-09-02
- VIN: 1MEBP893XEG
- Components: POWER TRAIN,ELECTRICAL SYSTEM
- Summary: VEHICLE LOST ALL ELECTRICAL POWER WHILE GOING DOWN THE HIGHWAY AT 65 MPH. PULLED OVER AND AFTER SEVERAL ATTEMPS THE CAR STARTED, BUT WHEN YOU PUT IT INTO GEAR IT WOULD LOSE ELECTRICAL POWER. AFTER INVESTIGATING, I FOUND THE IGNITION WIRING SEPARATED FROM ITS HOUSING.
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1998-03-13
- Components: ELECTRICAL SYSTEM
- Summary: IGNITION SWITCH STARTED SMOKING DUE TO SHORT.
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1998-03-15
- VIN: 1MEBP95F3EZ
- Components: ELECTRICAL SYSTEM
- Summary: UPON TURNING ON IGNITION SWITCH, SMOKE CAME OUT DUE TO A CABLE NEXT TO BRAKE BOOSTER MELTED.
SERVICE BRAKES, HYDRAULIC,ENGINE AND ENGINE COOLING,EXTERIOR LIGHTING PROBLEM
- Date Of Incident: 2024-11-24
- VIN: 1MEBP9036EG
- Components: SERVICE BRAKES, HYDRAULIC,ENGINE AND ENGINE COOLING,EXTERIOR LIGHTING
- Summary: RADIATOR/RADIATOR HOSE FAILED, RESULTING INN AN OIL LEAK; ALSO REPLACED BELTS/BRAKE PADS, SHOES, DRUMS AND WHEEL CYLINDERS/ EXHAUST SYSTEM/ALTERNATOR/HEADLAMPS. *AK
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2024-11-24
- Fire: 1
- VIN: 2MECP95F1FX
- Components: ELECTRICAL SYSTEM
- Summary: IGNITION FIRE. *AK
STRUCTURE PROBLEM
- Date Of Incident: 1996-02-19
- Components: STRUCTURE
- Summary: HEAD LINER FABRIC HANGING DOWN, OBSCURING VISION TO THE REAR. (SECOND VEHICLE ON 502774)
FUEL SYSTEM, OTHER PROBLEM
- Date Of Incident: 1996-02-19
- Components: FUEL SYSTEM, OTHER
- Summary: GAS GAUGE INDICATOR FAILED.
FUEL SYSTEM, OTHER PROBLEM
- Date Of Incident: 1996-02-19
- Components: FUEL SYSTEM, OTHER
- Summary: GAS GUAGE INDICATOR FAILED.
STRUCTURE PROBLEM
- Date Of Incident: 1996-02-19
- Components: STRUCTURE
- Summary: HEAD LINER HANGS LOOSE, OBSCURING VISION.
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1996-02-19
- Components: ELECTRICAL SYSTEM
- Summary: IGNITION SWITCH FAILED. (SECOND VEHICLE ON 501820) *DSH
POWER TRAIN PROBLEM
- Date Of Incident: 1995-04-17
- Crash: 1
- VIN: 1MEBP95F9EZ
- Components: POWER TRAIN
- Summary: CONSUMER PARK CAR DRIVE WAY CAR WAS RUN IN PARK IT CAME OUT OF PARK WENT INTO REVERSE WENT DOWN HILL AND HIT AN ENBANKMENT. TT
FUEL SYSTEM, GASOLINE PROBLEM
- Date Of Incident: 1995-01-19
- VIN: 1MEBP9032EG
- Components: FUEL SYSTEM, GASOLINE
- Summary: GAS TANK HAS TO BE REPLACED BECAUSE OF EXCESSIVE LEAKAGE. TT
1984 Mercury Marquis recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 1984 Mercury Marquis.
- Manufacturer: FEDERAL-MOGUL CORPORATION
- Components: FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
- Summary: CERTAIN FEDERAL-MOGUL AFTERMARKET FUEL PUMPS SOLD UNDER THE BRAND NAMES OF CARTER, ACCUFLOW, NAPA, TRUFLOW, PARTS DEPO, AND PARTS MASTER, SHIPPED BETWEEN AUGUST 2006 AND JULY 2007 FOR USE ON THE VEHICLES LISTED ABOVE. THE FUEL PUMP DIAPHRAGM IN CERTAIN PRODUCTION RUNS MAY HAVE BEEN IMPROPERLY INSTALLED OR INADEQUATELY TESTED WHICH MAY CAUSE THE FUEL PUMP TO LEAK.
- Consequence: A LEAKING FUEL PUMP COULD CREATE A VEHICLE FIRE HAZARD.
- Remedy: FEDERAL-MOGUL WILL NOTIFY OWNERS AND REPLACE THE DEFECTIVE FUEL PUMPS FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 15, 2007. OWNERS CAN CONTACT FEDERAL-MOGUL AT 248-354-7700.
- Manufacturer: FORD MOTOR COMPANY
- Components: SEAT BELTS:FRONT:ANCHORAGE
- Summary: THE BOLTS THAT ATTACH THE D-SHAPED RING FOR THE SHOULDER BELT ARE INADEQUATELY SUPPORTED BY THE MATERIAL IN WHICH THEY ARE MOUNTED. THE ATTACHMENT DOES NOT COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 210, "SEAT BELT ASSEMBLY ANCHORAGES".
- Remedy: DEALERS WILL INSTALL NEW ATTACHING HARDWARE TO IMPROVE THE STRENGTH OF THE MOUNTING.
Additional sources
More sources of information about 1984 Mercury Marquis problems:
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Transmission problems in a Mercury Grand Marquis : r ...
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What else can I do? No fuses are blown, 1998 Grand Marquis ...
Feb 21, 2020 ... If the fuse feeding these circuits is still intact, the problem is most likely a wiring issue in a common feed wire near the fuse. A weak ...
What causes intermittent failure in my 1986 Mercury Grand Marquis ...
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