1991 Mercury Grand Marquis Fuel system Problems
- Complaints
- 4about this part
- Share
- 5%of 82 total for the year
- Median mileage
- —not reported
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 4 complaints about the fuel system of the 1991 Mercury Grand Marquis, 5% of the 82 complaints for this model year.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“As I was turning a corner my car quit running. Further investigation found that there was no power getting to the fuel pump. The inertia switch had melted from a electrical short in the system. After removing the fuel pump/sending unit assy. From the gas tank, I found the short in the tank. The 12 volt power supply that runs from the tank wall plate, to the fuel pump, runs to close to the sending unit mounting plate near the fuel pump. Over time, the steel mounting plate had rubbed the singal coat of insulation from the power wire. This caused a direct short inside the fuel tank. …”
NHTSA complaint #705776, filed 1999-04Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2011 | 1 | 11% |
| 2010 | 1 | 4% |
| 2009 | 3 | 12% |
| 2008 | 4 | 5% |
| 2007 | 5 | 5% |
| 2006 | 13 | 9% |
| 2005 | 2 | 0% |
| 2004 | 6 | 2% |
| 2003 | 10 | 3% |
| 2002 | 4 | 5% |
| 2001 | 5 | 3% |
| 2000 | 8 | 5% |
| 1999 | 6 | 4% |
| 1998 | 8 | 6% |
| 1997 | 32 | 10% |
| 1996 | 21 | 9% |
| 1995 | 8 | 4% |
| 1994 | 6 | 4% |
| 1993 | 6 | 4% |
| 1992 | 20 | 8% |
| 1991 | 4 | 5% |
| 1990 | 2 | 4% |
| 1989 | 5 | 9% |
| 1988 | 5 | 7% |
| 1987 | 2 | 5% |
| 1985 | 2 | 10% |
| 1984 | 2 | 13% |
| 1983 | 1 | 14% |
Other parts of the 1991 Mercury Grand Marquis
21 complaintsBrakes
13 complaintsVehicle speed control
12 complaintsAir bags
11 complaintsEngine cooling
10 complaintsTransmission and drivetrain
8 complaintsBody and structure
4 complaintsExterior lighting
3 complaintsOther or unknown
3 complaintsVisibility (wipers, defrost, mirrors)
3 complaintsLatches, locks and linkages
2 complaintsSuspension
2 complaints
← All problems reported for the 1991 Mercury Grand Marquis
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Nov 1, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology