2005 Mercury Montego: sudden unintended acceleration

Filed Aug 31, 2018 · Acceleration, Airbags · 150,000 miles · OK · crash

Tl* the contact owned a 2005 mercury montego. While driving approximately 30 MPH, the vehicle experienced unintended acceleration and crashed into the rear of a second vehicle. Prior to the failure, the engine rpms erroneously increased and the vehicle surged forward. The front end of the vehicle sustained severe damage, but the air bags did not deploy. The vehicle was destroyed and towed. There were no injuries and a police report was filed. The manufacturer was notified of the failure. The local dealer was not notified. The failure mileage was 150,000.

Filed Apr 22, 2017 · Acceleration · 60,000 miles · NY

Sudden acceleration while in cruise control mode 65 or above. And will not stop unless brakes are applied to disengage the cruise control mode.

Filed Oct 9, 2013 · Acceleration, Fuel system · 113,486 miles · NC

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.

Filed Apr 2, 2012 · Acceleration · 50,000 miles · LA

Tl* the contact owns a 2005 mercury montego. The contact stated that after shifting into gear, the vehicle lunged forward abnormally. The vehicle was taken to the dealer who was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired and the VIN was not available. The failure mileage was 50,000 and the current mileage was 86,087.

Filed Jul 11, 2011 · Acceleration · 130,500 miles · OH

Tl* 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 the federal safety agency. The vehicle was not repaired. The failure mileage was 130,500 and current mileage was 130,520.

Filed Jun 29, 2011 · Acceleration · 86,000 miles · NC

Tl* 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.

Filed Sep 25, 2010 · Acceleration, Engine · 79,000 miles · PA

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.

Filed Feb 14, 2010 · Acceleration, Engine · 27,000 miles · FL

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.