Engine Problems of Mercury Grand Marquis

2007 Mercury Grand Marquis. Consumer states defect with computer/powertrain control module the consumer stated when his wife attempted to apply the brake on two separate occasions, the vehicle failed to reduce its speed. Consequently, his wife went through the red light. The consumer took the vehicle to the dealer for an inspection. The dealer asked the consumer did the vehicle have adjustable pedals and when the consumer stated it did, the dealer suggested that maybe his wife put her foot on both pedals simultaneously. The consumer also stated there was message on the instrument panel in french. When he looked at the owners manual, it meant change oil. The consumer believed the message in french, instead of english effected the computer system.

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On October 27, 2010, my wife was driving with me in the car and she started to brake for a red light. She was going about 30 miles per hour. As soon as she applied the brake, the engine accelerated and she had to use a large amount of braking pressure to stop the car. As soon as the car stopped, she took her foot off the brake and the engine returned to idle. Yesterday, I was driving the car at approximately 55 mile per hour and started to move into the passing lane when the traffic light ahead turned red. I applied the brake and the same thing happened. I had to apply a large amount of pressure on the brake peddle in order to stop the car while the engine raced on. As soon as the car stopped, the engine returned to idle and the problem was over. Yesterday, I took the car to the dealership where it was purchased and they kept the car overnight to run various tests. They found nothing. I picked the car up this afternoon and am going to now take it to another dealer for inspection.

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2004 Mercury marquis 4. 6 l engine. Spark plug blew out while driving, creating significant safety hazard because of loss of power and presence of combustible gasoline fumes. This is a safety hazard!.

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The contact owns a 1997 Mercury Grand Marquis. While driving at speeds of 10 mph, the contact observed smoke coming from under the hood and within seconds, the interior cabin was filled with smoke and flames. The vehicle occupants were able to safely exit the vehicle. And the fire and police department were contacted. There were reports filed by both entities. The vehicle was destroyed. The dealer advised there were no recalls for the vehicle and the manufacturer would not provide any assistance. The failure and current mileages were 37,000.

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The contact owns a 1997 Mercury Grand Marquis. While driving at any speed, the vehicle will suddenly shut off. The contact is able to shift into neutral and restart the vehicle. The vehicle has not been diagnosed by the dealer. The current and failure mileages were 67,000.

The contact owns a 2003 Mercury Grand Marquis. While driving 10 mph, the engine began to rev and the brakes failed. The contact stated that it sounded as if the transmission snapped. The dealer stated that nothing was wrong with the vehicle, however recalls were issued for that model of vehicle. The vehicle has been at the dealer for two weeks. The powertrain was unknown. The current and failure mileages were 36,000.

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- the contact stated that while driving his 2003 Mercury Grand Marquis (36200 failure mileage) and attempting to stop at a red light, with his foot on the brake, the vehicle accelerated and got away from the contact for about one yard. The contact had to forcefully apply the brake again, but nothing happened. While the vehicle was still accelerating, the contact had to put the vehicle in neutral and turn the power off. The vehicle was taken to a dealer, who discovered that a defective 2w7z-9f715-ba valve 226 had to be replaced. The current mileage was 36,780 miles.

This car has a dangerous defect. Randomly when in a stationary position, by holding the brakes, the engine and transmission sometimes suddenly accelerates powerfully, making it difficult to hold the car. I notified the dealer about this defect, several times in writing and by phone. Dec, 29, 2005 they took it on a drive, and claimed to have found no defect. Subsequently, Jan, 15, 2006 at approximately 1:00 pm, I was stopped at a red light on grand st. Nyc behind an SUV, by holding the brakes, all of a sudden it accelerated, and it was impossible to hold the car. It slammed into the SUV in front of me, smashing my front. Luckily, the SUV was not damaged. But even more luckily, we did not get hurt, (I had in the car my wife, an adult daughter, and 2 grand children). In addition, I guess we were extra lucky that we had the SUV in front of me, which averted a catastrophic mowing down of pedestrians crossing. The dealers took in the car, and notified me yesterday, Jan, 19, 2006, that they ran tests and find nothing wrong with the car.

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Rough engine idle, dealer reps say "all the new ones do it", "it's normal". I have asked them about it on several occasions since purchasing the car. My 2005 marquis does not get nearly the good gas mileage the 2001 marquis did with the same engine. The dealer told me "you can't compare cars".

Rough engine idle, dealer reps say 'all the new ones do it', 'it's normal'. I've asked them about it on several occasions since purchasing the car. Not nearly as good gas mileage as our 2001 Grand Marquis got, was told by the dealer, "you can't compare cars'.

While making a right turn into a parking space the engine lost power which resulted in the steering wheel and gear shift locking up. The dealer stated they could not duplicate the problem. Consumer got out of car and rocked it back and forth for a few minute. Het got back into the car and tried to move both the wheel and the gear shift. After about 5 minutes of this they both unlocked and the car was ok for 5-6 months.

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There was a severe vibration in the engine, when the vehicle idled. There was a general chassis vibration at speeds of 38 which was attributed to out of rounds tires.

I too have recently suffered from the Ford defect - intake crack at approximately 85,000 miles as so many other have with the 4. 6 liter engine. The local dealers say their is currently no recall but their is an existing recall for police and taxi cabs. Purchased the "new style" intake for approximately $450. 00 and repaired myself. I will be holding on to the receipt when Ford realizes they better put a recall on this to regain the trust of loyal buyers! I will also be reporting a complaint to the NHTSA. A back up email address rhanna@rslusa. Net.

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Consumer states she has an idle air control valve problem. She states that sometimes when she attempts to start her vehicle, it acts as if it wants to cut off. Then there are times when she is driving and has to stop, then the vehicle cuts off. The consumer talked to another consumer with the same problem and had come to the conclusion that a recall should be issued.

After starting and shifting into drive the engine raced and there was unexpected acceleration and the car would not stop even while applying brake. Turned vehicle off after crash and the engine continued to sound like it was running.

The plastic part on the 4. 6 liter engine of my 1997 Grand Marquis failed in a remote part of arizona which resulted in complete engine replacement. I understand that all 4. 6 engines in crown victoria's, Mercury's, Lincoln's, and Ford trucks had this part on which many failed. Ford motor CO. So much as admitted that this part was unacceptable, because the plastic part was replaced with a metal one. However they decline to do anything if the car is beyond warranty. I understand that they had a hidden warranty for police cars and taxis with no mileage restrictions. Help !!!!!!!.

While waiting in line for gas with foot on brake, engine started to race. Engine continued to race when car was put in neutral and then park. Turned engine off and restarted, racing did not reoccur after restarting.

Nar 02/28/2003 mr consumer experinced problems with engine since delivery of the vehicle.

I puchased my vehicle new in 1997. The harmonic balancer had two major cracks which resulted in damage to the crank shaft which resulted in the vehicle requiring a new engine. This vehicle had only 68000 miles and was never involved in an accident. An independent mechanic who examined my vehicle explained he had never seen something of this nature in all his years of repairing vehicles. Since this vehicle has never been in a accident, all indications are that this is a severe manufacturing defect. If this engine had exploded, it could have caused severe injury to the driver.

Ltr fm louis hettinger(ky) owner of a 1998 Mercury Grand Marquis 4-door vehicle question if vehicle should be recalled because of fast idle. The iac valve was replaced on the vehicle but did not help the problem. The service dealer stated that there was nothing else they could do to resolve the issue. There were other consumers who experienced the same problem. (there was a fast idle upon start up and the vehicle would slow down at short notice. When the problem occurred, there was no way to control the vehicle).

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