Problems owners report
Complaints filed with NHTSA about the 1991 Mercury Grand Marquis, by the system named in each complaint. One complaint can name several.
- Electrical system21
- Vehicle speed control12
- Service brakes, hydraulic11
- Air bags11
- Engine and engine cooling10
- Power train8
- Fuel system, gasoline4
- Structure4
- Exterior lighting3
- Visibility3
NHTSA ODI complaints (public domain) · updated 23 Oct 2026 · 13 injuries and 0 deaths reported
Compared with other years
NHTSA ODI complaints by model year
New York safety inspections
At its first New York inspection the 1991 Mercury Grand Marquis failed the safety check 1.75% of the time — 55% more often than the average 1991 passenger car (1.13%). Median odometer at inspection: 57,068 miles.
NY DMV Vehicle Inspections (vezn-fmmk), initial inspections since Aug 2021 · how we count
Recalls in Canada
2 Transport Canada recalls for the 1991 Mercury Grand Marquis.
| 1991056 27 Mar 1991 | Powertrain THE AUTOMATIC OVERDRIVE TRANSMISSIONS ON THESE VEHICLES MAY BE EQUIPPED WITH A PARK ROD ASSEMBLY THAT INCLUDES A PARK CAM WITH INADEQUATE SURFACE HARDNESS. … |
| 1990182 21 Nov 1990 | Seats And Restraints ON VEHICLES EQUIPPED WITH A DRIVER SIDE SUPPLEMENTAL AIR BAG, THE CENTRE POST THREADS OF THE AIR BAG MODULE MAY HAVE BEEN DAMAGED DURING ASSEMBLY. IN A DEPLOY… |
Transport Canada Vehicle Recalls Database · Contains information licensed under the Open Government Licence – Canada
Recalls
THE PARK ROD ASSEMBLY CONTAINS A PARK CAM WITH INADEQUATE SURFACE HARDNESS, WHICH COULD LEAD TO PARK DISENGAGEMENT OR NO PARK ENGAGEMENT WHEN THE LEVER IS PLACED IN PARK.
Whether a recall was fixed on a particular car is known only to the manufacturer: check the VIN at nhtsa.gov/recalls.
NHTSA recalls · summaries in NHTSA's own words
Service bulletins
What Mercury told its dealers about the 1991 Mercury Grand Marquis: known faults, fixes and updates.
| Bulletin | Summary |
|---|---|
| 636080 | TRANSFER SERVICE TIPS FOR THE FRONT WIPER MOTOR MOUNT BRACKET AND DEPRESSED PARK OUTPUT ARM. *TT |
| 627747 | THIS ARITLCE IS TO PROVIDE INFORMATION ON REPLACEMENT OF OLD STYLE HOOD LAMP SWITCH TO THE RVISED MECHANICAL HOOD LAMP SWITCH. *TT |
| 623988 | INFORMATION REGARDING TRANSMISSION FLUID USAGE CHARTS. *SLC |
| 623944 | SOME VEHICLES MAY EXHIBIT HEATER CORE LEAKS. *SLC |
| 622660 | THIS INFORMATION IS A SUPPLEMENT TO THE WIPER SYSTEM SERVICE INFORMATION PROVIDED IN THE WORKSHOP MANUALS. THIS SERVICE INFORMATION IS INTENDED AS AN AID TO ASSIST IN DIAGNOSIS AND REPAIR OF ERRATIC WIPER SYSTEM CONDITIONS. *TT |
| 618546 | SUBJECT REGARDING CLIMATE CONTROL - EATC - BLOWER MOTOR CONTROL SERVICE TIPS. *JB |
| 616522 | SUBJECT REGARDING CONTAMINATION FROM PRIOR TRANSMISSION CONCERNS OR EXCESS WEAR MAY BE TRAPPED IN THE TRANSMISSION FLUID COOLING SYSTEM. *TT |
| 612203 | INFORMATION REGARDING THE NEW TRANSMISSION COOLER FLUSHER- SERVICE TIP. *MJS |
| 6090087 | INFORMATION ON IDENTIFYING NON-APPROVED / ALTERNATE REFRIGERANTS WHICH COULD CAUSE SAFETY, AND PERFORMANCE CONCERNS IF INSTALLED IN FORD A/C SYSTEMS. *TT |
| 6089681 | SUBJECT ON A WIRE HARNESS TERMINAL REPAIR KIT AVAILABLE FOR REPAIRING ELECTRICAL WIRING HARNESSES. *TT |
| 608431 | INFORMATION ON THE NEW FLUSH AND FILL TOOL AVAILABLE THROUGH ROTUNDA. *TT |
| 606460 | EXPERIENCING A WHINE / BUZZ TYPE NOISE IN THE SPEAKERS OF THE ENTERTAINMENT RADIO OR TWO-WAY RADIO ON VEHICLES WITH AN IN-TANK ELECTRIC FUEL PUMP. *TT |
| 606420 | FORD MOTOR COMPANY NOW RECOMMENDS SAE 5W-30 VISCOSITY GRADE FOR SERVICING ANY FORD GASOLINE-POWERED VEHICLE REGARDLESS OF MODEL YEAR. *TT |
| 604059 | FORD MOTOR COMPANY HAS RELEASED A NEW ELECTRICAL GREASE ( F8AZ - 19G208-AA ) TO REDUCE THE POSSIBILITY OF MOISTURE CORROSION AT THE TERMINALS. *YC |
| 603724 | MASS AIR FLOW (MAF)- SENSOR CONTAMINATION- SERVICE TIP. *AK |
| 601343 | A NEW SILICONE GASKET AND SEALANT. *YC |
| 601341 | EXPERIENCING A WHINING / BUZZING NOISE IN THE SPEAKERS OF THE ENTERTAINMENT RADIO OR TWO-WAY RADIO. *TT |
| 601312 | INFORMATION ON A BUZZING OR RATTLE NOISE FROM THE EXHAUST SYSTEM. *TT |
| 601290 | INFORMATION ON TIRE COMPANY TELEPHONE NUMBERS FOR CUSTOMER ASSISTANCE. *YC |
| 601269 | ANNOUNCING THE FORD OEM AIR CONDITIONING RETROFIT KIT AVAILABILITY. *YC |
| 601238 | INFORMATION ON A NEW TRANSMISSION FLUID USAGE CHART. *YC |
| 601012 | THE USE OF PETROLEUM-BASED GREASE AS A LUBRICANT IN SERVICING DISC BRAKES IS NO LONGER ACCEPTABLE. *YC |
| 51987 | FUEL ECONOMY- CUSTOMER EXPECTATIONS VERSUS VEHICLE USAGE. *JD |
| 51945 | FLUID- TRANSMISSION FLUID USAGE CHARTS. *JD |
| 50997 | TRANSAXLE - TORQUE CONVERTER REPLACEMENT GUIDELINES AND TORQUE CONVERTER/TRANSAXLE COOLING SYSTEM CLEANING PROCEDURES - SERVICE TIP. *TW |
NHTSA manufacturer communications (public domain)
NHTSA investigations
BRAKE LINE PUNCTURES
NHTSA Office of Defects Investigation