Car Accelerates On Its Own Problems of Mercury Montego

Tl- the contact owns a 2005 Mercury Montego. The contact stated that while driving approximately 30 mph the vehicle experienced unintended acceleration causing the driver to crash into the rear of a second vehicle. Prior to the incident the engine rpms would erroniously increase and the vehicle would surge forward. During the incident the vehicle was destroyed and the front end sustained severe damage but the air bags did not deploy. No injuries were reported and a police report was taken at the scene. The manfacturer was notified of the failure. The local dealer was not notified. The failure mileage was 150,000. Jft.

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As I was going down the highway, the car would suddenly feel as though I had put the gas pedal to the floor. It would suddenly accelerate even though I did not change the pressure on the gas pedal. I took the car to the local dealership and they had an owner notification from Ford to clean the throttle body. The work was completed. However, the problem was never fixed. The vehicle would continue to do this on occasion. Now, the vehicle will completely shut off while I am driving down the highway. The fail safe light will come on and I have to coast to the side of the road. I have taken it back to the Ford dealership and another $1,000 later I am having to replace the throttle body.

I experience a sudden acceleration when I am pulling into or backing out of a parking space and pulling into my driveway. I purchased this car used two years ago, so it might not be the first occurrence.

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The contact owns a 2005 Mercury Montego. The contact stated while driving the vehicle suddenly accelerated, the message ( engine failed safe mode ) illuminated on the instrument panel which caused the vehicle to stall. The vehicle was taken to the dealer who diagnosed that the throttle body and the alternator needed to be replaced. The manufacturer was made aware of the failure and referred him to NHTSA. The vehicle was not repaired. The failure mileage was 130,500 and current mileage was 130,520.

My 2005 Mercury Montego (79,000mi. ) has unexpectedly lurched on two occasions. The first time I was driving slowly in a parking lot, and the car suddenly accelerated and lunged forward. Braking helped, but the lunging occurred again each time I tried to drive forward. I was able to move into a parking space and turn the car off which stopped the lurching movement. I sat for several minutes, restarted the car and drove away without incident. This didn't happen again for several months until a similar occurrence yesterday. This time I was ready to back out af a parking space, put the car in reverse and it surged backward. I depressed the brake, put the car in park, and shut it off. Once again I waited several minutes and drove away without incident. This is a very dangerous situation as people could have been close to the car when it lunged, or I could have been in traffic. I consider this to be a serious safety issue. With both of these occurrences the " fail safe mode" message appeared.

The contact owns a 2005 Mercury Montego premier. The contact stated that the vehicle suddenly accelerated numerous times, would lose power and stall. The vehicle was taken to the dealer who performed a diagnostic which located the failure at the throttle body sensor. The throttle body sensor was not replaced. The manufacturer advised the contact that the failure was not recalled. The vehicle was not repaired. The failure mileage was 86,000 and the current mileage was 100,000.

While idling when stopped or when moving slowly, the engine speed suddenly accelerates to above 3500 rpm causing the car to lurch forward unless the brake is firmly applied. The sudden acceleration lasts 3 to 5 seconds. Placing the gear into neutral has no effect on the engine speed. This happens sporadically. In the last 3 months it has happened approximately 7 times. Dealer says the car's computer system reports nothing unusual.