general problems of the 2000 Mercury Grand Marquis

Seven problems related to vehicle speed control have been reported for the 2000 Mercury Grand Marquis. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Mercury Grand Marquis based on all problems reported for the 2000 Grand Marquis.

1 Vehicle Speed Control problem

Failure Date: 02/01/2019

Tl the contact owns a 2000 Mercury Grand Marquis. While driving various speeds, the vehicle hesitated to accelerate. The failure occurred most frequently when traveling up hill. The failure was intermittent and the check engine warning indicator illuminated. The dealer was not notified. The vehicle was not diagnosed or repaired. The contact sprayed carburetor fluid on the intake manifold and noticed a crack. The manufacturer was made aware of the failure. The failure mileage was 118,000.

2 Vehicle Speed Control problem

Failure Date: 09/10/2010

2000 Mercury Grand Marquis lunges forward (rpm increase @1000 and loud growl from engine compartment) when approaching a stop light and/or already stopped at a light. Everything returns to normal when I accelerate again, until the next light. This is an intermittent problem but very annoying. There have been no "incidents" from this since I now know to expect it, but I could certainly see an accident occurring as a result of this defect. I am reentering this as I think I marked the incorrect year make on my previous submission. It is actually a 2000.

3 Vehicle Speed Control problem

Failure Date: 07/14/2010

The contact owns a 2000 Mercury Grand Marquis. The contact stated that while sitting in an intersection with the brakes depressed, the vehicle abnormally accelerated and lightly crashed into another vehicle. The air bags then deployed abnormally, several moments after the crash occurred. The contact was injured by the air bag and sustained lacerations to his left arm. A police report was filed. The vehicle was inspected by a dealer and they advised that the air bags should not have deployed without a forceful impact. The vehicle was repaired. The manufacturer was contacted and they offered no assistance. The failure mileage was approximately 200,000. Updated 03/29/11.

4 Vehicle Speed Control problem

Failure Date: 09/01/2006

The contact owns a 2000 Mercury Grand Marquis. While driving at various speeds between 5 and 10 mph the vehicle accelerated on its own and the brakes would not stop the vehicle. To stop the vehicle, the contact had to put the vehicle in neutral. The failure mileage was 35,000. There were no warning indicator lights illuminated. The current mileage was 37,000. The consumer stated that he previously put the car in reverse and it took off he kept braking but the vehicle wouldn't stop and damaged the front end of the car. Update 05/22/tr.

5 Vehicle Speed Control problem

Failure Date: 07/01/2006

: the contact stated the engine revved for no apparent reason and the check engine light illuminated previously. The vehicle has not be taken to the dealer. The vehicle had one accident about 2. 5 years ago when the vehicle hit a deer. The dealer determined then that there were no engine problems after the accident, only damage to the body of the vehicle. The contact expressed that on two occasions while the vehicle was being parked, the engine has surpassed 5000 rpms.

6 Vehicle Speed Control problem

Failure Date: 02/04/2004

The vehicle accelerated while on the highway to 60 mph. The consumer put the vehicle into neutral to slow it down. After taking it to the garage the rpm(s) were completely open. The idle valve was found to be defective and replaced.

7 Vehicle Speed Control problem

Failure Date: 12/19/2000

While making a left turn and then a right turn hit brakes, instead of vehicle slowing down or stopping it accelerated, causing consumer to hit a nearby building. Consumer sustained a minor injury.


Other Vehicle Speed Control related problems of the 2000 Mercury Grand Marquis

Vehicle Speed Control problems
7
Cruise Control problems
5
Accelerator Pedal problems
1


Fuel Economy of Grand Marquis Vehicles
Grand Marquis Service Bulletins
Grand Marquis Safety Recalls
Grand Marquis Defect Investigations