The contact owns a 2002 Mercury Grand Marquis. The contact stated while driving 50 MPH at night, the cruise control mode malfunctioned, and the speed of the vehicle increased independently. The contact stated that the brake pedal was depressed several times to the floor, but the vehicle failed to stop. The contact turned off the vehicle, and the vehicle came to a stop. The vehicle was towed to the contact's residence. The contact stated that he was afraid of driving the vehicle again. The contact unregistered the vehicle and turned the license plates of the vehicle to the Department of Motor Vehicles. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. Additionally, the contact stated that the check engine and the low oil pressure warning lights had illuminated two days prior to the failure. The manufacturer was made aware of the failure and a case was filed. The failure mileage was approximately 58,000.
2002 Mercury Grand Marquis engine problems
11 complaints (14% of all complaints for this car). 1 crash reported.
- owner complaints
- 11
- of this car's complaints
- 14%
- crashes
- 1
- recalls
- 0
Which part fails
- Exhaust system2
- Engine: gasoline2
- Engine2
- Exhaust system: manifold/header/muffler/tail pipe1
- Engine: gasoline: belts and associated pulleys1
At what mileage
Complaints by mileage at the time of the problem.
Mercury Grand Marquis engine problems in other years
Related recalls
No recalls on record for this model year.
Related investigations
Spark plug ejection from cylinder head
On september 6, 2005, odi received a petition requesting that the agency investigate allegations of engine spark plug ejection in certain model year 1997 through 2004 ford vehicles with triton v-8 and v-10 engines.odi received a total of 474 non-duplicative complaints on the subject vehicles where the complainant, or the dealer repairing the vehicle, reported that a spark plug detached from the cylinder and/or ejected from the engine.as of december 8, 2005, odi is not aware of any allegations where the alleged defect resulted in a loss of vehicle control, a crash, an injury, or a fatality in any of the 10,319,810 subject vehicles.in addition, odi is aware of only two incidents where the vehicle stalled without restart.information contained in the odi consumer complaints and obtained from 72 telephone interviews with complainants showed the following:(1) 99% of the complaints were on my 1997 to 2002 subject vehicles.(2) most the complainants reported hearing a loud pop while driving or upon starting up the vehicle followed by a loud, repetitive clicking or popping sound.(3) many of the complainants reported that the popping sound was accompanied by some loss of vehicle power; however, in 99% of the incidents reported, the vehicle did not stall.in the very few incidents where the vehicle did stall, most vehicles could be restarted.(4) only a small percentage of the complainants cited that they smelled gas or a slight burning smell when the incident occurred.(5) in all but a very few incidents, vehicle damage was limited to the engine.in one incident, the complaint reported that the fuel rail was damaged and replaced after one of the spark plugs ejected from the engine; however, the complainant reported that the damage did not result in any type of fuel leak or fire.in another incident, the only incident where a fire was alleged, the complainant reported that no fluid leak was observed, but that a fire resulted after the spark plug had ejected from the engine and he had restarted the vehicle and driven to another location.none of the complainants reported any damage to the vehicle hood.(6) only two complainants reported that they observed what appeared to be some drops of fuel coming from the cylinder where the spark plug had failed or on the spark plug itself; however, each of these complainants reported that there was no smoke or flames as a result of his incident.as the petitioner noted, and odi?s analysis showed, it is possible for a spark plug to detach from the engine cylinder threads in the subject vehicles.however, odi?s analysis of 474 complaints describing such incidents found only a very few alleged any safety-related consequences.none of these showed any evidence of a serious safety consequence.given the large population and relatively long exposure time of the subject vehicles, the complaint analysis indicates that the risk to motor vehicle safety from the alleged defect is very low.in view of the foregoing, it is unlikely that the federal safety agency would issue an order for the notification and remedy of the alleged defect at the conclusion of the investigation requested in the petition.therefore, in view of the need to allocate and prioritize the federal safety agency?s limited resources to best accomplish the agency?s safety mission, the petition is denied.
DP05005
What 2002 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
Tl* the contact owns a 2002 mercury grand marquis. The contact stated that there was a premature failure in which there was an internal crack on the intake manifold, which caused water intrusion that affected other components. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The failure mileage was not available.
I was leaving a shopping center parking lot when I started the car up and everything was okay. I shifted the car into reverse and immediately the engine started to race extremely fast causing the car to move backwards with my foot still on the brake. I tried to turn off the ignition, but I was too close to the car behind me and I hit it. I was moving about 10 to 20 miles per hour with my foot on the brake which failed to stop the vehicle. After the accident, the car ran okay. I took the car to the south hills lincoln dealership where it had been purchased. They claim there is nothing wrong with the car. I have only 27,100 miles on the car. It is a 2002 model and I have owned it since it was new. I called ford to try to get help but they said there is nothing they can do. The dealer had the car for four days and could not find anything wrong with it. I now have a car with just over 27,000 miles and am concerned about driving it. I do not know what else to do and ford could not care less. I did have other instances (about six) when on startup the engine would begin to race. I would immediately turn the engine off and restart it and then it would be okay. In september, 2010, I did take the car to a different repair shop and they replaced the idle control valve, but this did not do any good. The car might go a month or two without a problem. The accident was the first time it happened when the car was in gear. Other than this, the car is in perfect condition and I cannot afford to replace this car with only 27,000 miles on it.
Plastic heater supply tube (located in rear of plastic intake manifold) failed causing engine to overheat. Intake manifold has to be replaced.
Tl*the contact owns a 2002 mercury grand marquis. While driving 35 MPH the vehicle shut off. The check engine, battery, and track warning lights illuminated. The contact stated that she had to wait an hour to restart the vehicle. As of august 8, 2007, the dealer has not repaired the vehicle. The current and failure mileages were 73,000.
The gears tended to pop, making the vehicle jump forward, as well the engine leaking oil, and increasing the chance of the vehicle to overheat. Taken to dealer for repairs 4 times, but the problem recurred. Consumer was informed that a new engine was needed, but it will be at consumer's expense.
The vehicle had an odor.
No summary. Dt
Serpentine belt broke off while consumer was driving, causing steering, brakes, and a few other parts on vehicle to malfunction. Contacted dealer, and dealer was not willing to do anything.
The cars exhibits problem described in bulletin 15415 sb630431. Dealer claimed it was exhaust vibration. They realigned the exhaust. This did nothing to correct. The dealer claims it must be the way I drive since all the others on the lot are just like.
Questions about the 2002 Mercury Grand Marquis engine
Does the 2002 Mercury Grand Marquis have engine problems?
Owners have filed 11 complaints about the engine of the 2002 Mercury Grand Marquis, 14% of all its complaints.
At what mileage do 2002 Mercury Grand Marquis engine problems start?
Not enough complaints include the mileage to tell.
Was there a recall on the 2002 Mercury Grand Marquis engine?
There is no recall for this problem on this model year.
What year does the Mercury Grand Marquis have bad engine?
The Mercury Grand Marquis model years with the most engine complaints are 1997 (126 complaints), 1996 (86 complaints) and 1999 (33 complaints).
Other 2002 Mercury Grand Marquis problems
Acceleration 17Suspension 11Electrical 10Steering 9Seat belts 7Tires 7Brakes 6Lights 6Fuel system 4Airbags 3Visibility 3Body 1Transmission 1
VIN decoder
See the problems and recalls for an exact car
Buying a used 2002 Mercury Grand Marquis?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history