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1994 Mercury Grand Marquis problems

The most common problem on the 1994 Mercury Grand Marquis is acceleration and speed control, typically around 121,770 miles. It has 1.6 times the complaints of a typical Grand Marquis model year.

Typical year1.6x the typical complaints
Owner complaints
156
Recalls
3
Service bulletins
75
Worst area
Acceleration
Fuel economy
18mpg

The worst 1994 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.

Specific symptoms reported on the 1994 Mercury Grand Marquis

Fire or smoke 14Headlights 13Adaptive cruise 8No deployment 8Brake failure 8Sudden acceleration 5

Recalls 3

Vehicle speed control: cruise controlReported February 4, 2008 · 225,000 vehicles affected
What is wrong
Ford is recalling 225,000 my 1992-2003 econoline, my 1993-1995 taurus sho, my 1992-1998 crown victoria, my 1993 bronco, f-series, my 1995-1997 f-series super duty stripped chassis, my 1992-1998 mercury grand marquis, and my 1992-1995 lincoln town car vehicles. The affected vehicles were previously repaired using a wiring harness that is not compatible with the vehicle circuit polarity.
Risk
As a result, the fuse is located in the output circuit rather than in the intended input power feed circuit, and may not offer the intended protection in the event of an electrical short to ground.
Remedy
Dealers will install a new wiring harness, or replace the mating electrical component. The recall began on february 18, 2008. Owners may contact ford at 1‑800‑392‑3673.

Recall number 08V051000 · Recall details

Vehicle speed controlReported August 3, 2007 · 3,600,000 vehicles affected
What is wrong
On certain pickup trucks, passenger vehicles, sport utility vehicles, and motor homes chassis, the speed control deactivation switch may, under certain conditions, leak internally and then overheat, smoke, or burn.
Risk
This could result in an underhood fire.
Remedy
Dealers will install a fused wiring harness. Owners of the passenger cars included in this campaign will be instructed to return their vehicles to their dealers to have the speed control deactivation switch disconnected as an interim repair. As soon as repair parts are available (expected october 2007), owners will be instructed to return to the dealers for installation of a fused wiring harness. The recall began on august 13, 2007, and mailing completed by september 19, 2007. Owners may contact ford at 1‑888‑222‑2751.

Recall number 07V336000 · Recall details

Service brakes, hydraulic: foundation componentsReported August 9, 1994 · 214,000 vehicles affected
What is wrong
The nuts and bolts that attach the rear brake adaptor to the axle housing flange can loosen and eventually separate. If one or more of the nuts come off the bolts, damage to the parking brake assembly or to the antilock brake system (ABS) sensor and sensor ring (if so equipped) will occur. If all four nuts on one end of the axle come off the bolts, damage to the brake hydraulic line or the parking brake cable can occur.
Risk
Occurrence of any of these conditions can result in a loss of braking capability and possible accident.
Remedy
Dealers will inspect and, if needed, install new bolts. If any of the fasteners are disconnected, the parking brake and ABS components will be inspected and serviced.

Recall number 94V152000 · Recall details

See all 3 recalls for the 1994 Mercury Grand Marquis

Defect investigations

Speed control deactivation switch firesOpened September 6, 2002, closed June 30, 2004

Based on the low rate of fire incidents (2.5 incidents per 100,000 vehicles sold) where failure of the scds is involved and the age of the vehicles ? 7 to 11 years ? A safety-related defect trend has not been identified and further use of agency resources does not appear to be warranted.the closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists.the agency reserves the right to take further action if warranted by the circumstances.for additional information, see the attached closing report.

EA02025

Fuel-fed firesOpened August 22, 2002, closed December 4, 2002

The fars data shows that the risk of fire from impact in all directions in the subject vehicles is the same as all other sedans.the subject vehicles are not over represented with respect to the risk of fire in real-world high-energy crashes.a further discussion of issues related to post crash fires in the subject vehicles is set out in the closing report for sq 01-014 and that report is in the docket for this petition.after reviewing the petition and its supporting materials, as well as information furnished by ford and gm, and information within the agency's possession from previous investigations and other related actions,the federal safety agency has concluded that futher investigation concerning post-crash fires in the subject vehicles is not likely to lead to a decision that the vehicles contain a safety defect.

DP02007

Post rear end collision firesOpened November 27, 2001, closed October 3, 2002

There is no summary currently available

SQ01014

Engine compartment firesOpened September 20, 2001, closed September 6, 2002

RQ01002

Passenger air bag detachmentOpened May 3, 1995, closed August 31, 1995

There is no summary currently available

PE95027

Technical service bulletins for the 1994 Mercury Grand Marquis 75

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

See all 75 bulletins for the 1994 Mercury Grand Marquis

1994 Mercury Grand Marquis fuel economy

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

EngineDriveCityHighwayCombined
4.6L 8‑cylRWD162318

What 1994 Mercury Grand Marquis owners say

Most recent owner complaints, unedited.

Filed Jul 11, 2019 · Engine · 88,000 miles · PA

I understand that there were problems with the oil pans rusting

Filed Jan 23, 2017 · Lights · 98,000 miles · WI

Tl* the contact owns a 1994 mercury grand marquis. The contact stated that while driving at unknown speed, the headlights failed to remain illuminated. The vehicle was not taken to a dealer. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 98,000.

Filed Jun 13, 2016 · Lights · 100,000 miles · MO

Tl* the contact owns a 1994 mercury grand marquis. The contact stated that while driving at night with the low beam headlights activated, the headlights suddenly shut off. The driver was able to turn the headlights back on but the failure reoccurred. The cause of the failure was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was 100,000.

Filed Dec 28, 2015 · Lights · OK

Tl* the contact owns a 1994 mercury grand marquis. While driving various speeds at night, all the exterior lighting seized without warning. The vehicle was taken to an independent mechanic where it was diagnosed that the headlight switch assembly failed and needed to be repaired. The vehicle was repaired, but the failure recurred. The manufacturer was not notified of the failure. The failure mileage was unknown.

Filed May 5, 2013 · Electrical, Lights · 92,727 miles · AL

I was driving my 1994 mercury grand marquis gs home from work one night around 12:00 am and I experienced total lighting failure. All of the sudden everything was pitch black no lights what so ever. Every light on the car would go out and come back on simultaneously,causing me swerve, almost crashing head on with oncoming traffic. I have read online of other grand marquis' and ford crown victoria's doing the same thing.this was only my first experience with the lights. I have owned the car since jan 23,2013 and the lights continue to do this therefore I cannot drive it at night. The car is all original no aftermarket nothing but a cd player. Lights were doing this before I installed the cd player. So after this experience I pulled the light switch off only to find that the factory wiring harness that plugs into the back of the light switch had melted where the positive battery wire slot is.so I replaced the harness with a brand new one,and nothing.lights still go out. A couple weeks later I took the light switch off again to find the new wiring harness I had just bought 2 weeks prior melted just like the one from the factory, same wire slot. So now I have to go out and buy another one. I have also replaced the battery and the auto lighting control module too that didnt fix anything either.im going to try a new headlight switch and a nother new harness too. Hopefully that will fix it.but until I get the money to fix one of ford/mercury's most electrical problems I wont be driving it at night. But really this car should be recalled and ford should have to fix this. Grand marquis and crown vics have had problems with their light systems failing all the way up until they quit making them in 2011. Wish I would have known this on 1/23/2013 I wouldn't have bought mine, they just are not safe.

Filed Jul 9, 2010 · Acceleration · 128,000 miles · NY · fire

Tl*the contact owns a 1994 mercury grand marquis. While the contact was in his home he heard a loud explosion and within a few minutes flames were coming from the front end of the vehicle near the master cylinder. The fire department was called to extinguish the fire. A fire report was filed. The fire department stated that the failure was caused by the cruise control switch. The vehicle was not diagnosed by a dealer or manufacturer. No one was injured. There were no prior warnings. The current and failure mileages were 128000.

Filed Oct 2, 2009 · Acceleration · 72,000 miles · TX · fire

Tl*the contact owns a 1994 mercury grand marquis ls. In 2006, the vehicle caught fire while in a parked position. The fire department extinguished the flames and concluded that the vehicle speed control caused the fire. The manufacturer was notified. The failure and current mileages were 72,000.

Filed Sep 11, 2009 · Brakes · 105,000 miles · IN · fire

I began smelling smoke while driving 1994 grand marquis. After approx. 30 seconds of smelling smoke, flames and smoke came out of rear left of hood. Brakes did not work. Car coasted into an intersection and stopped. I immediately exited the car, called 911 and waited for fire department to respond. The engine compartment was totally engulfed in flames. Fire department was able to put fire out. Entire engine compartment was burned extensively, mostly on left side. Left front tire was burned and deflated. Fire appears to have started under master brake cylinder.

Filed Dec 3, 2008 · Acceleration · 96,000 miles · PA · fire

July or august 2006. My vehicle went on fire in my driveway with no one in the car or no key in the ignition. My home was also damaged by fire. The following morning I called customer service dept of ford motor company advised them of the problem. I insisted that they remove the car from my driveway to investigate this serious problem. I was informed by the customer service rep. That was not necessary. I year later august 2007. I received a letter from the ford motor company about this recall of speed control system malfunction problem. I notified them of the above listed problem. Was to late the vehicle was destroyed by fire. Due to this problem. I was not reimbursed by the ford motor company. For my car or home damage. I am still receiving letters about this serious fire problem. Is ford motor company responsible for damages & reimbursement of fire reports.

Filed Jul 24, 2008 · Brakes · 94,000 miles · OH

Tl*the contact owns a 1994 mercury grand marquis. While backing up at 5 MPH, the contact depressed the brake pedal and the pedal extended to the floorboard. The vehicle would not stop and he noticed brake fluid leaking. Upon further investigation, he discovered that the master cylinder was below the maximum level. He refilled the brake fluid, but the failure persisted. The contact located a recall describing the exact same failure, but ford stated that his VIN was not included in the federal safety agency campaign id number 94v152000 (service brakes, hydraulic:foundation components). The failure and current mileages were 94,000.

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Questions about the 1994 Mercury Grand Marquis

Is the 1994 Mercury Grand Marquis reliable?

Owners have filed 156 complaints about the 1994 Mercury Grand Marquis, 1.6 times a typical Grand Marquis model year.

What is the most common problem with the 1994 Mercury Grand Marquis?

Acceleration and speed control, with 33 complaints, typically around 121,770 miles. Next is brakes (19).

How many recalls does the 1994 Mercury Grand Marquis have?

3 recalls, covering vehicle speed control and service brakes, hydraulic.

Was there a recall on the 1994 Mercury Grand Marquis acceleration?

Yes, 2 recalls: 08V051000, 07V336000. Check your VIN to see if your car still needs the free repair.

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

The Mercury Grand Marquis model years with the most acceleration complaints are 2005 (39 complaints), 2006 (37 complaints) and 1994 (33 complaints).

What gas mileage does the 1994 Mercury Grand Marquis get?

Official estimates for the 1994 Mercury Grand Marquis range from 18 mpg combined. The most efficient version (4.6L 8-cyl, RWD) gets 16 city and 23 highway.

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