1985 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 1985 Mercury Marquis problems
The Mercury Grand Marquis 1985 is a classic car that has been known for its comfort and style. However, like any other car, it has its share of common problems based on complaints from owners. Here are some of the most common problems with the Mercury Marquis 1985:
- Intake Manifold May Crack Leaking Coolant Behind the Alternator: This is a common problem with the Mercury Grand Marquis 1985. The intake manifold may crack, causing a coolant leak behind the alternator. This problem can lead to engine overheating and damage to the engine if not addressed promptly.
- Spring in Seat Belt Buckle May Fail: The seat belt buckle spring may fail, making it difficult to fasten the seat belt. This problem can be dangerous in the event of an accident, as the seat belt may not function properly.
- Transmission Failure: Transmission failure is a common problem with the Mercury Grand Marquis 1985. This problem can lead to a complete loss of power and require expensive repairs.
- Fuel Injectors Stop Working: The fuel injectors may stop working, causing the car to stall or have difficulty starting. This problem can be caused by a variety of factors, including a faulty fuel pump or clogged fuel filter.
- A/C System Not Working: Some owners of the Mercury Grand Marquis 1985 have reported issues with the A/C system. The compressor may not work, or the system may not blow cold air. This problem can be caused by a variety of factors, including a faulty compressor or low refrigerant levels.
- Fuel Pump Shut Off Switch Not Getting Power: Some owners of the Mercury Grand Marquis 1985 have reported issues with the fuel pump shut off switch not getting power. This problem can prevent the car from starting and may require replacement of the switch or a fuse.
- Climate Control Sensor in Dash Goes Bad: The climate control sensor in the dash may go bad, causing the A/C or heat to not work properly. This problem can be caused by age or wear and tear and may require replacement of the sensor.
- Poor Acceleration and Burning Oil Smell: Some owners of the Mercury Grand Marquis 1985 have reported issues with poor acceleration and a burning oil smell. This problem can be caused by a variety of factors, including worn-out spark plugs or a clogged air filter.
- Running Hot: Some owners of the Mercury Grand Marquis 1985 have reported issues with the car running hot. This problem can be caused by a variety of factors, including a faulty thermostat or low coolant levels.
- Surges: Some owners of the Mercury Grand Marquis 1985 have reported issues with surges. This problem can be caused by a variety of factors, including a faulty ignition coil or a bad spark plug.
These are some of the most common problems with the Mercury Marquis 1985 based on complaints from owners. If you own a Mercury Marquis 1985, it is essential to address these problems promptly to avoid more significant issues down the line.
How many miles does a Mercury Marquis last?
Well taken care of Mercury Grand Marquis and the very similar Ford Crown Vics and Lincoln Town Cars have frequently gone 300,000+ miles.
What size engine is in a 1985 Grand Marquis?
Underneath its grandeur, the 1985 Grand Marquis housed a capable 5.0-liter V8 engine that delivered smooth acceleration rather than sporty performance, with a top speed that could reach up to 110 mph.
Do Grand Marquis have transmission problems?
Problem Description
Transmission problems are common in this model, often as a result of a failed front pump.
How many miles per gallon does a Mercury Marquis get?
Fuel Economy
| City | 15 mpg |
|---|---|
| Highway | 23 mpg |
| Combined | 18 mpg |
What size engine is in a 1985 Grand Marquis?
Underneath its grandeur, the 1985 Grand Marquis housed a capable 5.0-liter V8 engine that delivered smooth acceleration rather than sporty performance, with a top speed that could reach up to 110 mph.
How many miles does a Mercury Marquis last?
Well taken care of Mercury Grand Marquis and the very similar Ford Crown Vics and Lincoln Town Cars have frequently gone 300,000+ miles.
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).
Do Grand Marquis have transmission problems?
Problem Description
Transmission problems are common in this model, often as a result of a failed front pump.
1985 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:
- Tires problems
- Power train problems
- Engine and engine cooling problems
- Vehicle speed control problems
- Electrical system problems
The graph below shows statistics for all 1985 Mercury Marquis vehicle components and the number of complaints received.
1985 Mercury Marquis complaints
The NHTSA has received 5 complaints about various vehicle components related to the 1985 Mercury Marquis.
TIRES PROBLEM
- Date Of Incident: 2000-09-04
- VIN: 2HEB995S6FX
- Components: TIRES
- Summary: PE 00 020/TIRE TREAD SEPARATION: RIGHT REAR TIRE EXPERIENCED A TREAD SEPARATION (TIRE WAS STILL INFLATED) WHILE TRAVELING AT 40 MPH, WITH DRIVER AND THREE PASSENGERSIN A 1985 MERCURY, MARQUIS, AFTERMARKET EQUIPMENT INSTALLED AT 50,000 MILES, P215/75R14, AND DOT# HYHBS77050. FIRESTONE NOTIFIED, AND INFORMED CONSUMER THAT TIRES WERE NOT COVER UNDER RECALL. PLEASE FEEL FREE TO PROVIDE ANY FURTHER DETAILS. *AK FIRESTONE P215/75/R14 *MW
POWER TRAIN PROBLEM
- Date Of Incident: 2000-08-10
- VIN: 1MEBP8937FA
- Components: POWER TRAIN
- Summary: THIS CAR HAS HAD THREE TRANSMISSION PUT IN IT THAT I KNOW OF AND SOMETHING IS STILL A WRONG WITH IT. THIS CAR HAS OTHER PROBLEM'S TO NUMEROUS TO MENTION,LIKE AIR CONDITIONER, DOOR LATCHES , REAR END AND BACK AXLES.
ENGINE AND ENGINE COOLING PROBLEM
- Date Of Incident: 1997-09-05
- VIN: 2MEBP95F3FX
- Components: ENGINE AND ENGINE COOLING
- Summary: WHILE DRIVING THE VEHICLE CAME TO A STOP AND THE VEHICLE STALLED AND SHUT OFF. THIS HAPPENS ALL THE TIME WHEN COMING TO A STOP. ONCE IT STALLS VEHICLE SHUTS OFF, VEHICLE WILL START BACK UP . INVESTIGATION IS CLOSED, PE 87 028, STALLING. *AK EGR REPLACED TWICE AND ALSO MAP SENSOR REPLACED. *YD
VEHICLE SPEED CONTROL PROBLEM
- Date Of Incident: 1996-12-18
- VIN: 1MEBP8931FG
- Components: VEHICLE SPEED CONTROL
- Summary: GOING UP RAMP, ENGINE LIGHT ON, MAKING LOUD NOISE, ENGINE SURGED FORWARD QUICKLY, APPLIED BRAKES TO REDUCE SPEED, GOING UP HILL, ENGINE RACED AHEAD. DID NOT TAKE TO DEALER. *AK
ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 1995-01-05
- Components: ELECTRICAL SYSTEM
- Summary: BROKEN WIRE AT BRAKE LIGHT SWITCH, CAUSING BRAKE LIGHTS/CRUISE CONTROL/HORN MALFUNCTIONS. *SKD
1985 Mercury Marquis recalls
The National Highway Traffic Safety Administration (NHTSA) has issued 2 recalls for different components of the 1985 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: SERVICE BRAKES, HYDRAULIC:POWER ASSIST:VACUUM
- Summary: BRAKE BOOSTER REAR SHELLS MAY HAVE REDUCED WALL THICKNESSES WHICH COULD CAUSE THE SHELL TO BREAK. CONSEQUENCE OF DEFECT: REPEATED BRAKE USE COULD CAUSE THE SHELL TO CRACK AND THE BOOSTER ASSEMBLY TO COME APART. SERVICE BRAKES CAPABILITY WOULD BE TOTALLY LOST WITHOUT WARNING AND COULD RESULT IN AN ACCIDENT.
- Remedy: INSPECT AND IF NECESSARY REPLACE THE POWER BRAKE BOOSTER ASSEMBLY.
Additional sources
More sources of information about 1985 Mercury Marquis problems:
1985 Mercury Grand Marquis LS Comments (r11354)
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