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Mercury Grand Marquis loss of power problems

25 of the 3,703 owner complaints about the Mercury Grand Marquis describe sudden loss of power, most of them for the 1997 model year.

owner complaints
25
worst model year
1997
typical mileage
57,000
Is there a fix? No recall or service bulletin covers this area of the car yet.

By model year

  • 2008
    1
  • 2007
    1
  • 2006
    1
  • 2005
    1
  • 2004
    3
  • 2003
    2
  • 2002
    2
  • 2001
    1
  • 2000
    2
  • 1998
    2
  • 1997
    3
  • 1995
    2
  • 1994
    1
  • 1992
    2
  • 1990
    1

What owners say

Filed Aug 6, 2022 · CA

For sometime now the Headlights on my 2002 Mercury Grand Marquis appear to fade or dim soon after turning them on; giving the impression they are losing power and about to fail. I live in the mountains and am very familiar with each and every turn I See on the roads I travel. You See that Is The Matter of Fact- If My Headlights Failed; I Would Not See The Turn Possibly A Fatal Fact.

Filed Apr 29, 2022 · Steering · 140,000 miles · MA

The contact owns a 2006 Mercury Grand Marquis. The contact stated that after the vehicle was started and shifted into drive(D), the vehicle lost power steering functionality. The contact stated that excessive force was needed to steer the vehicle. The contact stated that once the vehicle was driving the power steering functionality returned. The contact stated that an unknown warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed and determined that the steering rack: Part Number: (A, 36-1056N) needed to be replaced. The vehicle was repaired, however, the failure recurred. The contact researched the failure online and related the failure to the federal safety agency Campaign Number: 13V385000 (Steering). The manufacturer had not been informed of the failure. The failure mileage was approximately 140,000.

Filed Nov 29, 2021 · Electrical · MO

First issue: The headlights and door chime stay on after key is removed and lights are off causing battery to drain while vehicle is not being operated. Second issue: 50 amp ignition fuse blows randomly while car is in motion which causes a complete loss of power to the car including: braking power and power steering assist. The tilt steering being raised or lowered fixes the problem temporairly on occasion. A clicking sound from the lighting control module is heard when adjusting the tilt steering also

Filed Aug 7, 2021 · Electrical, Steering · PA

Catalytic converter FAIL, engine idles rough while in park. HIGH Loss of engine power while driving Differentials in back tires are imbalanced…timing FAIL. Steering not calibrated, drivetrain out of sync altogether. Back wheels, left and right; randomly spin & torque hard while car is already in motion on any private road, hidden road, domestic road and high capacity, high speed highway, causing vehicle to fishtail uncontrollably and dangerously, and wildly side to side potentially veering off the road which could result in death unless the driver regains proper control of vehicle. Out of sync car computer and the mechanical devices built into car do not have proper timing performed on those particular moving parts altogether. The car was not manufactured properly mechanically nor electrically altogether. Headlights & electric system etc have an incomplete recall on my vehicle. [XXX] PARTS OF THIS DOCUMENT HAVE BEEN REDACTED TO PROTECT PERSONALLY IDENTIFIABLE INFORMATION PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

Filed Aug 15, 2019 · Steering · 110,000 miles · NJ

Loss of power steering. Difficult to steer. Corrosion related defect in the lower intermediate shaft.

Filed Nov 16, 2015 · Airbags, Steering · 150,000 miles · AL

Takata recall: tl* the contact owns a 2004 mercury grand marquis. The contact stated that there was a sudden loss of power steering ability, which randomly progressed without warning. The contact stated that when the steering wheel was turned left or right, the contact had to apply force to prevent the steering wheel from going straight several times. In addition, the air bag warning light randomly flashed. The vehicle was to be taken to a dealer for inspection and diagnostic testing. The manufacturer was notified of the failure. The approximate failure mileage was 150,000.

Filed Oct 7, 2014 · Steering · 50,000 miles · FL

Tl* the contact owns a 2008 mercury grand marquis. The contact stated while driving various speeds, there was a complete loss of power steering without warning. The contact continued driving even though the steering wheel was very difficult to maneuver. The failure recurred intermittently. The vehicle was taken to an authorized dealer two times and they were unable to duplicate a problem. The failure became progressively worse. The manufacturer was notified of the issue. The approximate failure mileage was 50,000.

Filed Jun 5, 2010 · Engine · 108,090 miles · VA

2004 mercury marquis 4.6 l engine. Spark plug blew out while driving, creating significant safety hazard because of loss of power and presence of combustible gasoline fumes. This is a safety hazard!

Filed Dec 3, 2007 · Engine · 6,000 miles · NJ

Tl*the contact owns a 2007 mercury grand marquis. While driving 68 MPH, the vehicle lost power and shut off. The contact restarted the vehicle and drove home. She later took the vehicle to the dealer for inspection. The purchase date and fuel type were unknown. The current and failure mileages were 6,000.

Filed Jun 20, 2007 · Engine · 20,194 miles · TN · crash

Tl*the contact owns a 2005 mercury grand marquis. While driving 15 MPH and making a right turn, the engine failed and the vehicle lost power. The vehicle was struck on the rear bumper by another vehicle. A few minutes later, the contact was able to restart her vehicle and drove to a mechanic. Due to a computer issue, the mechanic was unable to diagnose the cause of failure. The next day, the dealer diagnosed the cause of failure as problem with the throttle body, but did not repair the vehicle. The failure has caused the contact to have panic attacks and to seek a physician for medication. She has not driven the vehicle since. The current and failure mileages were 20,194.

Related recalls

No recalls on record for this model year.

Questions about the Mercury Grand Marquis loss of power

Which Mercury Grand Marquis years have sudden loss of power problems?

The model years with the most reports are 1997 (3 complaints), 2004 (3 complaints) and 1992 (2 complaints).

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