One problem related to accelerator stuck has been reported for the 2000 Mercury Mountaineer. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2000 Mercury Mountaineer based on all problems reported for the 2000 Mountaineer.
Throttle body was covered with carbon that caused the accelerator to stick while driving. This condition also caused the vehicle to surge forward or backwards when additional pressure was applied to the accelerator pedal to release the stuck pedal. Cleaning of the throttle body seemed to remedy the problem.