Car Accelerates On Its Own Problems of Mercury Mountaineer

The contact owns a 1997 Mercury Mountaineer. The contact stated that he shifted into drive and the vehicle suddenly accelerated. The contact mentioned that he had to shift to neutral in order to stop the vehicle and stated that the failure occurred several times. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 160,000 and the current mileage was 170,000.

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While I was parking the car in the garage, I came to a stop about 12 inches from a file cabinet against the back wall. Then I put the car in reverse to move back a few inches for better clearance. All of a sudden the car unexpectedly accelerated forward and crashed into the file cabinet and totaled it plus damaged the front bumper, grill and hood. Note that applying the brake did not stop it. Very thankful that no one was in the front of the car when this happen.

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2002 Mercury Mountaineer with sudden acceleration problems. State farm insurance would like to know if someone wanted to look at the vehicle before repairs were made. The consumer hit a homeowners garage.

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The contact owns a 1998 Mercury Mountaineer. While driving 35 mph, the vehicle suddenly accelerated to 90 mph. The contact had to place his foot behind the accelerator pedal and pull it up in order to stop the vehicle. He pulled the vehicle over and was still on the side of the road during the time of this complaint. The current and failure mileages were 117,000.

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While reversing in low speed, the vehicle inadvertently accelerated into a pole. The dealership was notified, but did not resolve the problem. The consumer experienced sudden acceleration. The consumer believed that the pedal stuck. The transmission pan was removed and then re-sealed. The main control valve body was removed and repaired.

Vehicle experienced sudden acceleration periodically when coming to a stop. Taken to dealer for a check up for the third time, but the problem recurred.

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Unintended acceleration of vehicle without warning. Also had unintended shut downs of vehicle during previous week. Vehicle was taken to dealer for repairs. Dealer still has vehicle. I almost ran over 2 pedestrians crossing the street at a nursery school. I was able to control the problem with the vehicle's brakes.

While stopped at a red light with my foot on the brake pedal, the engine bucked and misfired as though it was going to die. Suddenly, the engine revved to the point that with both of my feet on the brake pedal, the car crept ahead and tapped the car ahead of me. Just as quickly as the engine surged, it dropped back in revs to normal idle. On my way home from the scene, it occured again, except this time I had my hand on the auto gear change, moved it qiuckly to neutral, and turned off the ignition. I made it home without further incident, called the dealer on Monday , and had them tow the car to the dealership as I did not feel that the vehicle was safe to drive. After having the car for two days now, they claim that they can find nothing wrong. I told them that I would not accept the car back without a specific reason for this sudden acceleration. They say there is nothning wrong that they can find, but I will not drive this vehicle until a fix is located and repaired.

See all problems of the 1999 Mercury Mountaineer 🔎.

Vehicle experiences sudden acceleration, consumer changed floor mats because he thought they were getting under the accelerator, however after the change it happened again causing a rear end collision, dealer can not figure out the problem.

When brakes applied the vehicle suddenly accelerated moving forward at approximately a foot per second shifted to neutral rpm's at approximately 3000 vehicle returned to normal.

Applied the brakes and vehicle made a loud noise and had sudden acceleration.

When applying the brakes for vehicle to come to a stop, engine revs, causing an sudden acceleration. The brakes are unable to stop vehicle. Dealer has been contacted.

While parking vehicle suddenly accelerated in reverse for no reason. Cause undetermined.