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1990 Mercury Grand Marquis problems

The most common problem on the 1990 Mercury Grand Marquis is electrical system. It has fewer complaints than a typical Grand Marquis model year.

Typical yearClose to a typical year
Owner complaints
55
Recalls
0
Service bulletins
36
Worst area
Electrical
Fuel economy
18mpg

The worst 1990 Mercury Grand Marquis problems

Ranked by number of owner complaints. Mileage and cost come from what owners wrote.

Problems by type

Tap a problem to see which part fails, at what mileage and in which other years.

  • Electrical
    13
  • Acceleration
    9
  • Airbags
    9
  • Brakes
    7
  • Transmission
    6
  • Engine
    4
  • Body
    3
  • Fuel system
    2
  • Visibility
    2
  • Seats
    1
  • Tires
    1

Specific symptoms reported on the 1990 Mercury Grand Marquis

Airbag light 6

Recalls

No recalls on record for this model year.

Defect investigations

Brake line puncturesOpened September 11, 1991, closed January 15, 1992

There is no summary currently available

PE91125

Technical service bulletins for the 1990 Mercury Grand Marquis 36

Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.

See all 36 bulletins for the 1990 Mercury Grand Marquis

1990 Mercury Grand Marquis fuel economy

Official EPA estimates in miles per gallon (MPGe for electric). Ranges cover trims that share the same engine.

EngineDriveCityHighwayCombined
5.0L 8‑cylRWD152218

What 1990 Mercury Grand Marquis owners say

Most recent owner complaints, unedited.

Filed Aug 1, 2015 · Engine · 40,000 miles · IL

Engine occasionally surges when placed into reverse. The engine immediately races and the car even convulses. The only thing that stops it is to turn off the engine. This is my mom's car and she rarely drives it.

Filed May 24, 2005 · Fuel system · 89,000 miles · TX · crash

I embarked on a routine trip to dinner in my mother's 1990 mercury marquis. I started the engine which idled normally, as usual. With my foot on the brake, I engaged the shift lever into the r position which resulted in immediate accelleration in a reverse direction. I swerved the car to the left to avoid children across the street and rammed a vehicle parked on the street. The vehicle stopped on impact with the other vehicle and returned to normal idle speed. I place the car in d and returned it to the driveway where it remained until we could deliver it to our family mechanic. He placed the engine on his analyzer - did other inspections of brakes, cruise control and other throttle related systems and found nothing.

Filed Oct 28, 2004 · Tires · NJ

Goodyear integrity p215/75r15. Sidewall blowout at highway speed (45-55 MPH.) tires were installed on 08/27/2001, and had 36,000 miles at time of failure. Tires were well maintained, had no prior damage, and tire showed no signs of problems prior to failure. Failure was spontaneous and catastrophic. T is ironic that a tire with the brand name of "integrity" should spontaneously disintegrate.

Filed Sep 15, 2004 · Airbags · IL

The 'air bag' light on my dash is lighting up. It doesn't stay on constantly, but it does flash, which concerns me. It doesn't go on every time my car is on, but it does flash about 95% of the time. I saw the recall and want to know if my vehicle was involved and if it was fixed.

Filed Sep 7, 2004 · Airbags · IL

I have a concern about the air bag in my car, which is a 1990 mercury grand marquis. The "air bag" light comes on. It doesn't stay on constantly, but it does 'flicker' or it will stay on for a few seconds. There are times where it doesn't come on at all, but I am still concerned. I was wondering, since there was a recall on the part of the airbag, if I should have it looked at.

Filed Sep 26, 2003 · Transmission · NJ

Problems with transmission malfunctioning.*mr when the vehicles accelerator pedal was pressed it became stuck to the floor of the vehicle. The vehicle was taken to a dealer who indicated that the insulator cap fell off. The technician said this was a common problem with these vehicle.

Filed Sep 16, 2003 · Brakes · 49,000 miles · TN

Brake lines rusted through, loss of rear brakes. Also emergency brake frozen and inoperable.

Filed Aug 1, 2003 · Transmission · 127,989 miles · NJ

While driving automatic transmission doesn't shift properly from the first gear, wont shift. Dealer notified. Vehicle was taken to independent shop and overhauled. Transmission at cost over $1000.00 *ak

Filed Aug 1, 2003 · Acceleration · 127,998 miles · NJ

While driving at normal speed accelerator pedal went to the floor, and vehicle lost all power to go forward. Dealer notified. Consumer stated this vehicle was no longer under warranty. Transmission cost over $1000.00. *ak

Filed May 9, 2003 · Brakes · NY

The vehicle leaked brake fluid. The vehicle was taken to a service technician who stated the brake line rusted.

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Questions about the 1990 Mercury Grand Marquis

Is the 1990 Mercury Grand Marquis reliable?

Owners have filed 55 complaints about the 1990 Mercury Grand Marquis, fewer than a typical Grand Marquis model year.

What is the most common problem with the 1990 Mercury Grand Marquis?

Electrical system, with 13 complaints. Next is acceleration (9).

How many recalls does the 1990 Mercury Grand Marquis have?

No recalls on record.

What year does the Mercury Grand Marquis have the most electrical problems?

The Mercury Grand Marquis model years with the most electrical complaints are 2005 (75 complaints), 2003 (51 complaints) and 1992 (41 complaints).

What gas mileage does the 1990 Mercury Grand Marquis get?

Official estimates for the 1990 Mercury Grand Marquis range from 18 mpg combined. The most efficient version (5.0L 8-cyl, RWD) gets 15 city and 22 highway.

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