Vehicle Speed Control Problems of Mercury Grand Marquis - part 2

On several occasions since I've owned this vehicle (I am original owner) when I step on the brakes hard the engine accelerates. Recently it has gotten worse and I know I'm not touching the accelerator. Today it was so bad the I was standing on the brakes with both feet and burning rubber. I shifted to park and the engine went onto max acceleration. I shut of the engine and restated and found it was still at max acceleration. I shut it off again and waited 30 seconds. When I then restarted it ran normally. Fortunately I was at a stop sign or I think there would have been a collision if in traffic.

See all problems of the 2006 Mercury Grand Marquis 🔎.

The contact owns a 2003 Mercury Grand Marquis. The contact stated that while stopped, the engine rpms increased excessively as the vehicle violently accelerated without warning. The contact crashed into another vehicle. There were no injuries and a police report was filed of the incident. The vehicle was taken to a dealer where the failure was unable to be duplicated or diagnosed. The manufacturer was notified of the failure. The vehicle was not repaired. The approximate failure and current mileage was 147,696.

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On 9/17/2003 @ 11:23 pm, my 1996 Grand Marquis caught fire under the hood and was totally destroyed while sitting idle in front of my house. The henrico county fire department was called. I have the fire report, which indicates that no cause for the fire was determined. In June 2014, I received a notification from Ford motor company stating that my 1996 Grand Marquis has a potential under hood fire risk. The issue as stated was that "Ford cannot be confident that after many years in service, the speed control deactivation switch in your vehicle will not leak, posing the risk of an under hood fire. Until this repair is performed, a fire could occur at any time. A fire can occur even if the key is not in the ignition, and can occur even if the speed control system is never used. " after receiving the letter, I filed a report with Ford to possibly get some form of compensation for my car since I my car was insured for liability only. Ford responded back that my claim was closed due to the fact that I know longer owned the car, and they were unable to inspect it. I find this to be absurd since the car was totaled, and not available for inspection.

See all problems of the 1996 Mercury Grand Marquis 🔎.

When reversing out of driveway car accelerated on its own. Pressed brakes but car still moved backwards. Have skid marks in driveway to show for it. Threw car into neutral and turned off engine. Restarted and everything seemed normal. Drove car on trip and when reducing speed to slow down by pushing on brake car again accelerated and nearly hit another car. Again threw car into neutral and turned off engine. And again when restarting car everything seemed normal again. Wife is extremely afraid of driving car. Took car to dealer where it was purchased and was told that it may have been that I pushed the brake and gas pedal at the same time, this however, I believe is not the case. Dealership however kept the car for further investigation as to what the problem may be. Will hear in a day or two,.

See all problems of the 2008 Mercury Grand Marquis 🔎.

Leaving work, approximately 150 feet from parking place to parking lot exit into road. When braking to stop before entering roadway, vehicle lurched forward with engine racing at a high rpm. Pushed into neutral until stopped then park with engine still racing. Turned off and sat still for a minute then restarted with no further problem. Mechanic cannot find anything wrong. Not the first time it has happened but was the worst incident with engine being uncontrollable.

See all problems of the 2002 Mercury Grand Marquis 🔎.

Yesterday, Tuesday 23, 2014, I backed out of a parking spot on the parking deck about 15 feet and put the car in drive. It lurched forward at a tremendous high speed and although I hit the brakes, the auto slammed into the retaining wall at the parking spot I had just backed out of. I was wearing my seat belt and the air bag deployed. I received minor bruising on my arms, legs and ribs due to the air bag deployment. This auto has side air bag as well, but only the drive air bag deployed. I was checked out by a medic, who was staying at the resort and heard the crash. There were no witnesses. Ems arrived and checked me over. A police report was filed. . . Updated 06/26/14.

See all problems of the 2010 Mercury Grand Marquis 🔎.

I was turning into my drive way and the car all of a certain accelerated to a speed up and I immediately jump on to the brake to stop the car and it crashed into the back fence . I got out the car to check and see if the pedal had the floor mat on it and their was nothing on it.

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Gas pedal went all the way to the floor and would not release. I kept hitting the pedal to try and release it for about 2 miles. I kept my foot on the brake to try and slow the car down, but that didn't help. The floor mat was not under the pedal because it is too short to reach it. After hitting the pedal as hard as I could numerous times it released.

See all problems of the 2007 Mercury Grand Marquis 🔎.

The contact owns a 2009 Mercury Grand Marquis. The contact stated that while the brakes was engaged there was an sudden increase on engine rpms. The contact mentioned that the rear wheels started to spin and in order to stop it he had to shift into neutral. The vehicle was taken to the dealer who was unable to duplicate the failure. The failure mileage and current mileage was 33,000.

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The contact owns a 2005 Mercury Grand Marquis. The contact stated that the driver of the vehicle was traveling 10 mph when the vehicle accelerated up to 50 mph and the driver crashed into several trees. The vehicle was not destroyed and there were no injuries. The vehicle was towed to a repair shop but the cause of the failure was unknown. The manufacturer was not notified of the incident. The failure mileage was unknown. The VIN was unavailable.

See all problems of the 2005 Mercury Grand Marquis 🔎.

The contact owns a 2005 Mercury Grand Marquis. The contact stated that while parking, he attempted to apply the brakes but depressed the accelerator pedal instead. The contact crashed against another vehicle as a result. There was no damage. The contact stated that the failure was due to how close the pedals were positioned to one another. The vehicle was taken to dealer, who offered no assistance. The manufacturer was not notified. The VIN was not available. The failure and current mileages were 18,000.

Car speeding up while braking.

The contact owns a 2002 Mercury Grand Marquis. The contact was at a complete stop when the vehicle accelerated abnormally. The vehicle crashed into a water heater in the contact's garage. The contact did not sustain any injuries but there were major damages to the front end of the vehicle. The manufacturer was not made aware of the failure and the vehicle was not repaired. The failure and the current mileage was 115,100.

I applied the brakes at around 20 miles per hour on January 25 and the motor accelerated for one or two seconds. I was able to stop the car by pressing the brakes much harder than normal. On January 26 I applied the brakes at around 60 miles per hour and the motor again accelerated for one or two seconds. I continued to press the brakes, the motor slowed down and the car eventually slowed. It sounded like pressing the accelerator down hard to pass another car on a two lane road.

Upon starting up 2005 Mercury marquis (~24000 miles) and placing car into drive, car accelerated at a high rate of speed and crashed into a gas station pump. The car accelerator malfunctioned and was in a "jammed state". The driver immediately put right foot then both feet on brake trying to get the vehicle to stop. The car would not slow much less stop. Driver suffered very serious eye injury and currently has no sight in injured left eye. There is the risk of losing left eye. Passenger suffered fractured sternum and other bruising. Both driver and passenger are traumatized from this car accelerator malfunction.

The contact owns a 2007 Mercury Grand Marquis. The contact stated that the vehicle would not accelerate from a stop. The contact then shifted into reverse and the vehicle surged backward until crashing into a concrete post. The vehicle was towed home. The failure was not diagnosed or repaired. The manufacturer was not made aware of the failure. The failure and current mileages were 26,093.

The contact owns a 1998 Mercury Grand Marquis. The contact stated that the vehicle abnormally accelerated while attempting to park with the brakes depressed. The vehicle was not taken to the dealer and the manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and the current mileage was 60,000. Updated 01/13/lj updated 01/19/12.

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Speed control is not working correctly.

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.

See all problems of the 1999 Mercury Grand Marquis 🔎.

The contact owns a 1998 Mercury Grand Marquis. While the vehicle was parked the contact heard a loud booming noise from inside his home. The contact noticed flames underneath the hood. The fire department extinguished the fire and a report was filed. The vehicle was destroyed. The manufacturer was made aware of the failure and a complaint was filed. The contact stated there was a recall under NHTSA campaign id number: 07v336000 (vehicle speed control) that may be related to the failure. The manufacturer stated the VIN was not included in the recall. The vehicle was not repaired. The approximate failure mileage was 63,000.

The contact owns a 2003 Mercury Grand Marquis. The contact stated was attempting to park the vehicle while driving 5 mph in a residential driveway when the vehicle abnormally accelerated. The contact crashed into the garage of his home. The brakes were applied during the failure but did not respond. The contact was uninjured yet there was extensive damage to the vehicle. The vehicle had not yet been inspected or repaired. The manufacturer was not notified of the failure. The failure mileage was 50,400.

The contact owns a 2004 Mercury Grand Marquis. The contact stated that while in reverse, the vehicle surged backwards until heavy pressure was applied to the brakes. The vehicle was taken to an authorized dealer where the contact was informed that the failure was normal. The vehicle was not repaired. The failure mileage was 27,800.

See all problems of the 2004 Mercury Grand Marquis 🔎.

The contact owns a 2004 Mercury Grand Marquis. While driving approximately 65 mph, the vehicles speed increased. When the brake pedal was engaged, the vehicle began to reduce speed. The contact maneuvered onto the emergency lane and turned the vehicle off. After restarting the vehicle, it began to function normally. The failure occurred three times. The vehicle was taken to an authorized dealer for diagnostic testing and the they were unable to diagnose the failure. The manufacturer was not made aware of the defect. The approximate failure mileage was 50,000. The VIN was unavailable.

I am certified safety professional with over 30 years experience working in the occupational safety field. Twice within the last week, my vehicle accelerated to 5000 rpm while pressing the brake pedal to stop at an intersection. My foot was on the brake pedal and not on the gas pedal. I had to quickly shift into neutral to avoid entering the intersection into crossing traffic. Brakes would not hold. A few seconds after shifting into neutral the engine decelerated back to normal on its own. Carpet was not the issue. This is a serious malfunction that could have killed me or someone else.

The contact owns a 2005 Mercury Grand Marquis. While driving approximately 44 mph, the contact applied the brakes and there was an abnormal increase in engine rpms and the engine roared loudly. The vehicle attempted to accelerate but the contact applied the brakes abruptly. The vehicle then gradually began to decelerate to approximately 30 mph. He then disengaged the overdrive feature and once the vehicle reached a speed of 30 mph, the vehicle operated as normal. The vehicle was not taken to have the failure diagnosed or repaired. The failure and current mileage was 8,770.

The contact owns a 2010 Mercury Grand Marquis. While driving approximately 20 mph the check engine light illuminated on the dashboard. Once the vehicle was stopped it began to shake and lunge forward. The vehicle was taken to an independent mechanic where he was informed that the throttle body needed to be replaced. The vehicle was repaired. The failure and current mileages were 21,680.

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.

See all problems of the 2000 Mercury Grand Marquis 🔎.

2002 Mercury Grand Marquis lunges forward (increase rpm @1000, and loud growl from engine compartment) when I let off the accelerator, I. E. Approaching a stop light. Once I release the brake and accelerate again, all goes back to normal. There is no "check engine" light, and no other notable problems. It is intermittent and annoying.

The contact owns a 2006 Mercury Grand Marquis. The contact stated the vehicle surged forward on three separate occasions while the brakes were engaged. During two of the failures the contact applied excessive pressure to the brake pedal to stop the vehicle. On one occasion the vehicle stopped accelerating on its own. The vehicle was taken to a repair shop but the mechanic was unable to diagnose the failure. The vehicle was not repaired. The manufacturer was made aware of the failure and the contact was advised to take the vehicle to an authorized dealer. The failure mileage was 28,000 and the current mileage was 32,800.

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.

The contact owns a 2008 Mercury Grand Marquis. After driving in reverse and shifting into drive from a stop light the vehicle surged forward and crashed into another vehicle. A police report was not filed. One person was reported injured. Smoke was seen coming from under the hood of the vehicle. The vehicle was towed to the contacts residence. The failure had not been diagnosed by the dealer. The failure and current mileages were 42,000.

The contact owns a 2001 Mercury Grand Marquis. The contact stated while driving 70 mph, the accelerator pedal failed to return to the original position after being depressed. The contact had to lift the accelerator pedal with his foot in order to get the vehicle to slow down. The contact stated no warning light was illuminated. The vehicle was not taken to a dealer or independent mechanic for diagnosis or repairs. The manufacturer had not been informed of the failure. The failure mileage was approximately 50,000. The VIN was unavailable.

Three times my 2004 Mercury marquis has had shown "prius like" problems. Once in dry summer , then twice in winter in the pacific NW. The last time I was into the intersection when I slammed on my parking brake to stop the car but the motor was still racing.

Car acceleration on its own, estimated start end of Dec. 2009. Estimates that it happens once a month, no clue as to when it will happen. Going to slow down / park, car starts to accelerate on its' own. , have to press hard on brake and use 2 feet. . Brought car into dealer 4 times between Jan thru June , at this point. Dealer says can't find anything.

Over the past several months, my 2005 Mercury Grand Marquis has suddenly stalled when I begin to accelerate after the car is stopped. It happened 3 times in forward mode and once in reverse. On two occasions, I had gotten several feet into the busy intersection and in one incident, an accident nearly occurred.