535 of the
4,953 complaints filed about the Mercury Grand Marquis
are about the engine —
11% of everything owners reported.
The worst model year for it is 1997.
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.
NHTSA complaint #11674238 — an unverified report by a vehicle owner.
On [XXX] I was driving this recently purchased Grand marquis . On [XXX] here in San Antonio around ten at night I hit the brakes and something under the hood compartment blew up and it cocked the car . I was trapped inside and when I finally was able to get my seatbelt released I had to break the window with my head . The previous week I reached out to ford and they told me they would address the issue and that they would call me back and that was to no avail. i reached out to ford and at first I was told I would be helped and then a man came on the phone yelling that my vehicle . I need help with resol this issue . My car is totaled and I’m hurting and it’s because of a car with recalls that are a fire haz and dangerous to be put on the road Thank you and God Bless . was not under any recalls The car had been parked for over ten years beca when the orig owner bought it it had issues with the cruise control and the brakes and the engine and the lights . I investigated about and hazards the car was demonstrating and upon further consideration my instinct told me this car was defected and was a big problem waiting to happen INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA complaint #11624137 — an unverified report by a vehicle owner.
When i hit the brake pedal,4 times in past month car accelerated briefly then quit. no warning signs no one can tell me what's wrong i read there was a class action lawsuit file years ago for this problem.
NHTSA complaint #11579479 — an unverified report by a vehicle owner.
The contact owns a 2003 Mercury Grand Marquis. The contact stated while driving approximately 70 MPH, the vehicle started losing motive power. The contact stated that the vehicle had shifted to LIMP Mode and was almost side swiped by a tractor trailer. The contact stated that the check engine warning light was illuminated. The contact had not taken the vehicle to a local dealer. The vehicle had been towed to an independent mechanic; however, the vehicle was not diagnosed or repaired. The contact stated that the failure was intermittent at first but became a recurring failure. The manufacturer had not been informed of the failure. The failure mileage was approximately 240,000.
NHTSA complaint #11524458 — an unverified report by a vehicle owner.
The contact owns a 2001 Mercury Grand Marquis. The contact stated he noticed coolant fluid on the ground underneath the vehicle. The contact started the vehicle and noticed that the high engine temperate warning light was illuminated. The dealer was contacted but was not able to diagnose the vehicle. The manufacturer was contacted and stated that the vehicle was not under recall. The failure mileage was 100,000. The contact stated that the vehicle is at the service dealer awaiting repairs.
NHTSA complaint #11503860 — an unverified report by a vehicle owner.
I started Mercury with foot on break like normal. Shifted into reverse. Car accelerated backwards at full speed. Brakes did not stop car. Attempted to shift into neutral but went into drive instead. Car accelerated forward at full speed with my foot still on break. Car hit metal post and tree knocking them down and dragging the tree 50 to 60 feet before stopping with my foot still on the break. Car had stopped accelerating. I turned off the ignition. This unintended acceleration had happened before. Two different dealers attempted to fix the problem. Both of them thought they had been successful but it happened again. Previously, applying the brakes stopped the car, but not this time. Someone could have been injured severely or killed.
NHTSA complaint #11502872 — an unverified report by a vehicle owner.
While driving, I came to a stop light and suddenly, the car idled high and lurched forward while my foot was on the brake, luckily, I was stopped well away from the vehicle in front of me. The car idled high and seemed to have a mind of it's own. I took the back roads home and backed into our garage. The car smelled hot, and I though I had smoked my brakes, trying to keep control of it. Later that night, I told my husband about the car's actions and he did not believe me, though my daughter who was with me at the time confirmed that the car had indeed accelerated on it's own. My husband started the car and it did idle high and get hot once again, although only parked with no one in it. He thought he knew what the problem was and we turned off the car and closed the hood and went inside to order the part. A few minutes later, we heard a couple popping noises and I opened the door that led into the garage from the basement. Smoke was coming into the house and my husband said that a flame shot over my head. The car had caught on fire under the closed hood. We called the fire department, but by the time they arrived, a good portion of the basement was on fire. The house was a total loss. My husband though that the pvc elbow under the hood was sticking closed, so that is the part we were going to order. Unsure, if that was the real cause or not. The car did not have any warning lights or any other indications of a problem before this incident.
NHTSA complaint #11482417 — an unverified report by a vehicle owner.
The contact owns a 2007 Mercury Grand Marquis. The contact stated that while the vehicle was idling, the RPM’s revved up and the vehicle lunged forward. The contact depressed the brake pedal and the RPM’s decreased. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 100,000.
NHTSA complaint #11458779 — an unverified report by a vehicle owner.
ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:MANIFOLD/HEADER/MUFFLER/TAIL PIPE
The contact owns a 1999 Mercury Grand Marquis. The contact stated that the vehicle had a leaking intake manifold. The vehicle was taken to an independent mechanic and diagnosed that the intake manifold needed to be replaced. The vehicle was not repaired. The dealer and manufacturer were made aware of the failure but informed the contact that there was no recall associated with the VIN. The failure mileage was approximately 120,000.
NHTSA complaint #11448881 — an unverified report by a vehicle owner.
PLEASE NOTE: This complaint/issue pertains to many nearly identical plastic intake manifolds sold as OEM, new or replacements for cars made in the last ten years- Dangerous perhaps fatal fires are likely not getting reported due to the nature of the cause. My car has a plastic manifold. When a fuel injector or fuel regulator fails, raw gasoline can collect in the plastic bottom. If more than a few drops collects, turning over the engine can cause, and did in my car, a massive explosion. Fortunately the blue & white cloud of smoke that filled my two-car garage did not ignite. Had it ignited my son and I might not have survived and our home may have burned. Not that your organization takes all complaints seriously, particularly when thousands of cars might be involved, but these cheap plastic manifolds present a real danger I believe could have already caused deaths and property damage. If you are a political entity I suspect you will ignore this. But at least a warning should be give to the public. We are replacing the fractured manifold but the replacement part is still plastic, too thin to survive what cars in the past would have survived easily.
NHTSA complaint #11447930 — an unverified report by a vehicle owner.
The contact owns a 2004 Mercury Grand Marquis. The contact stated that she noticed a leak underneath her vehicle with the check engine and coolant warning lights illuminated. The contact had taken the vehicle to an independent mechanic where it was discovered that coolant had been leaking from a crack in the intake manifold. The dealer nor the manufacturer had been notified of the failure. The vehicle had yet to be repaired. The failure mileage was approximately 150,000.
NHTSA complaint #11441976 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2007 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT WHEN THE VEHICLE WAS STARTED, THE CHECK ENGINE LIGHT ILLUMINATED AND FLASHED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO DIAGNOSED THAT THE INTAKE MANIFOLD FRACTURED ANTI-FREEZE LEAKED INTO THE OIL. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 140,000.
NHTSA complaint #11302984 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2001 MERCURY GRAND MARQUIS. THE CONTACT STATED THAT THE INTAKE MANIFOLD WAS LEAKING ANTIFREEZE ONTO THE COIL PACK ON CYLINDER NUMBER EIGHT. THE CONTACT STATED THAT THERE WAS A MANUFACTURER WARRANTY THAT WAS PLACED ON THESE VEHICLES REGARDING THE FAILURE. THE CONTACT SPOKE WITH DAVIS FORD (2111 N MAIN ST, CANTON, IL 61520, (309) 647-1111) AND WAS INFORMED TO CALL THE MANUFACTURER TO HAVE THE VEHICLE SERVICED UNDER WARRANTY. THE MANUFACTURER WAS NOTIFIED AND INFORMED THE CONTACT TO CALL NHTSA TO ENFORCE THE MANUFACTURER WARRANTY. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS 133,000.
NHTSA complaint #11281184 — an unverified report by a vehicle owner.
TL* THE CONTACT OWNS A 2005 MERCURY GRAND MARQUIS. WHILE DRIVING 45 MPH, THE CONTACT ATTEMPTED TO BRAKE, BUT THE VEHICLE ACCELERATED. THE CONTACT SHIFTED THE TRANSMISSION INTO NEUTRAL AND THE VEHICLE STOPPED. THE ENGINE CONTINUED TO REV FOR AWHILE AND THEN THE RPMS SLOWED DOWN TO A NORMAL LEVEL. THE CONTACT STATED THAT THE SYMPTOMS DISAPPEARED ON THEIR OWN AND THE VEHICLE OPERATED WITHOUT ANY FAILURES SINCE. THE MANUFACTURER STATED THAT THERE WAS NO RECALL FOR THE FAILURE. THE FAILURE MILEAGE WAS 79,000. *BF
NHTSA complaint #11210796 — an unverified report by a vehicle owner.