The passengers side seat beat comes undone at times and the speed sensor works intermittently and it leaks gas from around the fuel pump
1999 Mercury Grand Marquis acceleration problems
12 complaints (7% of all complaints for this car). 5 crashes reported.
- owner complaints
- 12
- of this car's complaints
- 7%
- crashes
- 5
- recalls
- 0
Which part fails
- Cruise control2
- Linkages1
- Cables1
At what mileage
Complaints by mileage at the time of the problem.
0k-25k
25k-50k
50k-75k
75k-100k
100k-125k
125k-150k
150k-175k
175k-200k
200k+
Mercury Grand Marquis acceleration problems in other years
Related recalls
No recalls on record for this model year.
Related investigations
Fuel-fed fires
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
What 1999 Mercury Grand Marquis owners say
Most recent owner complaints, unedited.
My car was in drive at a business traffic intersection drive way on a slight hill with the brakes on when the engine surged and the car started to reverse while still in drive. I had to put considerable pressure on the brakes to stop it. I checked and the shift lever was still in drive. My car has been properly maintained and was recently serviced with all required services done. This really scared me and I would have crashed into a car if it was behind me. Ford should look into this safety problem.
Tl* the contact owns a 1999 mercury grand marquis. While driving 75 MPH with the speed control engaged, the speed increased when the brakes were applied and failed to disengage. The contact was forced to manually disengage the vehicle speed control in order to avoid a crash. The dealer advised the contact to bring the vehicle in to be repaired at his expense. The manufacturer was not notified of the failure. The failure mileage was 97,000. Updated 10/21/11 *bf the consumer stated when he attempted to disengage the cruise control, the vehicle jerked and went into passing gear, failing to disengage from cruise control. The consumer had to purchase a new switch, due to the failure of the cruise control. Updated 12/19/11
Tl*the contact owns a 1999 mercury grand marquis. While driving at any speed, the traction control light flashed and the vehicle lost acceleration. The contact attempted to accelerate, but the speed would not increase. The dealer charged $100 for a diagnosis, but could not duplicate the failure. The contact is afraid that a crash could occur. The manufacturer was notified; however, they felt that the complaint was unimportant. The failure mileage was 135,000.
While sitting in traffic accelerator cable snapped, causing consumer's vehicle to strike the vehicle in the front. *ak......central collision centor of new lenox, inc 114 oak street, new lenox,il 60451 replaced the cable, an dnot the dealer. Consume rhas the old parts.
Vehicle will not idle, consumer has to press accelerator to keep vehicle idling. Dealer replaced idle control valve two months ago. At this time part needs to be replaced again. Valve was first replaced in 2000.
While slowly parking vehicle, consumer states the vehicle all of a suuden lunged foward in full acceleration, it jumped the parking bumper and into the vehicle in the opposite parking space, sideswiped another vehicle and pushed the first vehicle into a third vehicle, the brakes had no effect in stopping the vehicle.
Accelerator got stuck in open position, causing vehicle to continue accelrating after coming to a stop. Vehicle hit some thing before shutting off.ford has been contacted.
I pulled up to an intersection, the car accelerated rapidly. I mashed brakes but car kept on rapidly accelerating, tires screeching and peeling rubber. I had to turn off ignition to stop car.
Vehicle downshifted into passing gear while driving down a hill and vehicle accelerated. Brakes did not response, causing consumer to run into a bus and telephone pole. Also, dual airbags did not deploy. But, cover came off, resulting in a broken hip and pelvis. Prior to this accident consumer was complaining about transmission. But, dealer stated it was not important.
Questions about the 1999 Mercury Grand Marquis acceleration
Does the 1999 Mercury Grand Marquis have acceleration problems?
Owners have filed 12 complaints about the acceleration of the 1999 Mercury Grand Marquis, 7% of all its complaints.
At what mileage do 1999 Mercury Grand Marquis acceleration problems start?
Not enough complaints include the mileage to tell.
Was there a recall on the 1999 Mercury Grand Marquis acceleration?
There is no recall for this problem on this model year.
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).
Other 1999 Mercury Grand Marquis problems
Engine 33Lights 21Suspension 18Steering 16Electrical 15Tires 12Transmission 12Brakes 9Body 7Seat belts 7Fuel system 6Visibility 6Airbags 5Locks 3Seats 2Wheels 2
VIN decoder
See the problems and recalls for an exact car
Buying a used 1999 Mercury Grand Marquis?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history