NHTSA — Vehicle Speed Control: Accelerator Pedal Problems

CarComplaints.com Seal Of Avoid Like The Plague


pretty bad
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
5,395 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2002 Mercury Mountaineer engine problems

engine problem

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2002 Mercury Mountaineer Owner Comments

problem #7

Jun 242006


  • Automatic transmission
  • miles


While driving the entire accelerator assembly fell off onto the floor. This occurred on interstate.

- Sumner, WA, USA

problem #6

Nov 302004

Mountaineer 8-cyl

  • Automatic transmission
  • 100 miles
About two years ago owner purchased the vehicle 2002 Mercury Mountaineer. Right away owner complained of acceleration problem. While driving on the road vehicle felt like it was shifting when it accelerated. Vehicle usually did this about 25-30 mph or even higher speeds. The rpms would raise and increase speed. It felt like a transmission problem because it would accelerate, and raise the rpms without warning. There were no lights to indicate a problem. The first time the vehicle was taken to the dealer they didn't know what the problem was. The dealership was cooperative. The dealer replaced about half the transmission because they were thinking that it was a transmission problem. The problem has remained about the same and was still going on. When it accelerated by itself it sped up about 5-10 mph. The rpms went up by about 1000. Owner would like to make the office of defect investigation investigators aware that he would like to have someone come and check out the vehicle, and even take the vehicle away for further analysis if they would like to. He another vehicle to drive, and insisted about getting the problem with the accelerator repaired.

- Monroe, MI, USA

problem #5

Feb 182005

Mountaineer 6-cyl

  • Automatic transmission
  • miles
When the vehicle in put into drive from park, the vehicle jumps forward even though the gas has not been applied. The problem was reported to the dealer who stated they reprogrammed the vehicle computer.

- Cotuit, MA, USA

problem #4

Jun 102004

Mountaineer 8-cyl

  • Automatic transmission
  • 37,667 miles


While driving on a neighborhood road the entire accelerator assembly fell of onto the floor. I found no evidence of the nuts used to affix the assembly to the fire wall. Had this occurred on interstate driving or in heavy city traffic an accident could happen.

- El Mirage, AZ, USA

problem #3

Jun 112003


  • Automatic transmission
  • miles
The front end dash has a very loud rattle while letting up on the gas or depressing the brake the vehicle has been in the shop five times. They have readjusted the A/C lines many times, tightened items in the engine, and replaced a missing bolt in the firewall. It was fixed once that last a couple of months, but the noise is back. It will be going in the shop for the sixth time. Also, there is a squeak when going over bumps. It has been in the shop twice and they replaced the ball bearing joints. However, the squeak is back.

- Middletown, OH, USA

problem #2

Jan 212003


  • miles
Consumer states vehicle suffered sudden acceleration when shifted from park into drive, vehicle collides with light pole damaging the front of the vehicle. And neither of the air bags deploy. Dealer has been notified.

- Birmingham, MI, USA

problem #1

Jul 102001


  • miles
When brakes are applied and making a sudden stop vehicle idles in neutral. Then, jumps into drive. When gas pedal is depressed vehicle will not respond. Dealer has been contacted.

- Bacliff, TX, USA

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