2004 Mercury Grand Marquis: sudden unintended acceleration

Filed Aug 8, 2011 · Acceleration · 50,000 miles · MO

Tl* the contact owns a 2004 mercury marquis. The contact stated that while driving 20 MPH with the brakes engaged, the vehicle suddenly accelerated. The contact stated that in order to stop the vehicle, he had to shift into neutral and shut the engine off. The vehicle was not taken to a dealer to have the failure diagnosed. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 50,000 and the current mileage was 67,000.

Filed Jun 16, 2011 · Acceleration · 71,000 miles · MS

I own a 2004 mercury grand marquis ls that unexpectedly goes into unintended acceleration when slowing down or stopping vehicle. I never know when the unintended acceleration will occur. First noticed problem at about 24000 till now at 71000 miles. The problem occurs usually in a line of traffic as I am slowing down or slowing down to stop at a stop sign or traffic light. Or parking the vehicle. Suddenly the engine starts racing and sometimes the vehicle will jump forward rapidly (sudden unintended acceleration). I have to apply the brakes rapidly and with extreme pressure to keep the vehicle from hitting the vehicle in front of me or to keep from running a traffic light or stop sign. Most of the time when the engine races and I apply the brakes the rear wheels will continue to spin at a high rate even to the point of causing the rubber on the tires to smoke and still try to push me forward. After applying the brakes I must turn off the engine using the key to stop the unintended acceleration. This is a serious safety problem. I noticed the problem not long after purchasing the car and reported it to the dealer dub herring ford in picayune, ms. While the car was still under warranty. They didn't do anything to check or fix the problem. They seemed not to worry or be concerned about this problem! I reported the problem several times to the dealer with no success. I then reported it to the ford motor company several times and they referred me to the dealer which didn't do anything to fix the problem to start with. I then took the car to an independent repair shop and they tried to find out from the dealer and ford co. If there was a recall or notation or fix for the problem. The independent shop said the dealers and ford co. Wouldn't give him any information concerning the problem. They asked me to contact ford motor co. And see if I could get any response for a fix or repair and got no help from them. I am lodging a formal complaint against ford and the dealer.

Filed May 3, 2010 · Acceleration · 88,000 miles · MA

Unintended acceleration: last year (feb 2009) my 2004 mercury grand marquis had an unintended acceleration which I (weight lifter) could barely control and I almost crashed into 2-cars. I also had to have the brakes replaced due to severe braking required to stop the car due to the unintended acceleration I used a reliable mechanic (highly rated by the state of ma) as the local ford dealer shops are over-priced and unreliable. No diagnostic codes showed-up at the shop after the problem, but I would not have my wife drive this car? The car is well maintained and I had a previous grand marquis, so I know the car better than most. Have you heard about this problem and is there a recall? Ford was contacted on feb 23 2010, via their protal, and indicated that there was no problem or recall, and suggested that I go to their dealer (did not go as I have no need for bs). I informed my local mechanic that the car went into overdrive and I had to drive over the curb (brake to floor to stop it).l burned out the brakes but no one died. There was no diagnostic codes that showed a braking or other electronic problem.

Filed May 23, 2005 · Acceleration · OH

While driving, and coming to a stop (braking) the vehicle surged forward. The consumer has taken the vehicle into the dealer. The dealer stated the vehicle was performing the way it should. Please provide any further information. Also, please provide the vehicle identification number. *jb the consumer stated had a 2001 grand marquis that did the same thing numerous times. After investigating consumer had cruise control disabled. No further problem. *bf

Filed Sep 8, 2004 · Engine · 3,300 miles · NE

When driving at low speeds, the vehicle would surge forward without warning. The consumer will take the vehicle to the dealership for inspection. Please provide any further details. *la

Filed Mar 30, 2004 · Acceleration · MD

With the consumer's foot on the brake, the vehicle sudden accelerated and started shaking. (nar) *ph