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)
2005 Mercury Grand Marquis engine problems
14 complaints (3% of all complaints for this car). Typical mileage when it fails: 39,000. 2 crashes reported.
- owner complaints
- 14
- of this car's complaints
- 3%
- typical mileage
- 39,000
- crashes
- 2
- recalls
- 0
Which part fails
- Engine5
- 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
Specific symptoms reported on the 2005 Mercury Grand Marquis engine
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
Related investigations
Steering Column Shaft Obstruction
On July 7, 2014 the Office of Defects Investigation (ODI) opened a preliminary evaluation based on five complaints (VOQs) alleging incidents ofinterference between dislodged exhaust manifold heat shields and the lower steering shaft/knuckle, including one alleging the interference resulted in a crash on a highway entrance ramp. Since opening this investigation, ODI has received four additional owner complaints.One indicated that the shield was removed before binding could occur.The other three occurred at low speed and produced some momentary steering binding that was overcome by the driver when additional steering effort was applied.Once the shield was repaired or removed, the steering returned to normal.The single incident ODI identified as a possible crash (VOQ No. 10578715) related to this condition could not be verified and the description of the crash in the complaint was not supported by the police accident report.No additional crash allegations have been identified related to the alleged defect condition.Information provided by Ford in its September 10, 2014 response to ODI's information request letter identified 10 additional incidents resulting in a low rate of 1.6 incidents per 100,000 vehicles sold in vehicles ranging from 7 to 11 years in service.Six of these incidents were reported by a single source, a state police fleet that corrected the problems in March 2011 and has not reported any additional failures since.Ford also reported 5 warranty claims, but these incidents occurred at very low mileages and appeared to be caused by loose or missing heat shield attachment hardware rather than the corrosion condition that was the cause of the more recent incidents and the focus of this investigation.This investigation is closed. The closing of this investigation does not constitute a finding by the federal safety agency that a safety-related defect does not exist. The Agency will continue to monitor complaints and other information relating to the alleged defect in the subject vehicles and take further action in the future if warranted.The following VOQs are associated with this investigation:10643753, 10615584, 10611362, 10610451, 10578715, 10479681, 10471833, 10317493.
PE14021
What 2005 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
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.
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
Tl* the contact owns a 2005 mercury grand marquis. While driving at an unknown speed, the plastic cover of the intake manifold fractured and leaked water all over the yard without warning. The dealer was not called. The manufacturer was made aware of the failure and informed the contact to call the federal safety agency. The failure was not repaired. The failure mileage was approximately 115,000.
Tl* the contact owns a 2005 mercury grand marquis. While driving approximately 5 MPH and then depressing the brake pedal to slow the vehicle down, the vehicle accelerated without warning. To avoid crashing into the preceding vehicle, the contact was able to veer to the right and continue driving. There was no warning indicator illuminated. The failure recurred three times. The vehicle was taken to porter ford (600 ogletown rd, newark, de 19711) where it was diagnosed that the throttle body motor assembly was sticking and needed to be replaced. The vehicle was repaired. The manufacturer was not contacted. The approximate failure mileage was 39,000.
Vehicle at times with my foot on the brake pedal,just starts to accelerate for no reason when I stop a light or in traffic.
Manifold heat shield fell off and jammed steering wheel shaft, could not turn steering wheel.
2005 mercury grand marquis. Consumer writes to request reimbursement *tgw the consumer's claim for reimbursement was denied because the vehicle did not have roadside assistance coverage and parts/labor were not covered by roadside assistance. The serpentine belt and lighting control module had to be replaced.
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.
Knocking noise from engine/transmission area when car is stopped at idle, transmission in gear, windows closed and heater fan off. Problem: intermittent, erratic, muffled knocking noise. Heard from inside the car.
Questions about the 2005 Mercury Grand Marquis engine
Does the 2005 Mercury Grand Marquis have engine problems?
Owners have filed 14 complaints about the engine of the 2005 Mercury Grand Marquis, 3% of all its complaints.
At what mileage do 2005 Mercury Grand Marquis engine problems start?
The typical (median) mileage in owner complaints is 39,000 miles.
Was there a recall on the 2005 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 2005 Mercury Grand Marquis problems
Lights 293Electrical 75Airbags 67Acceleration 39Seat belts 36Steering 20Brakes 18Body 11Visibility 11Tires 8Transmission 5Driver assistance 4Fuel system 2Seats 2Suspension 2Locks 1Wheels 1
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