I think I've found my problem. There is a bracket attached to the brake pedal arm that holds a motor and worm gear to adjust the accelerator and brake pedal. The motor is in a plastic case attached to the metal bracket with two torques head screws. One was a little loose. Tightened it up gently, wiped off the oil drop. We will see if that fixes it. Can't tell for sure if the plastic motor case is cracked.