One problem related to speed control cable has been reported for the 1998 Toyota Avalon. The most recently reported issues are listed below.
On March 21,1999 owner was driving vehicle when it began to involutarily accelerate. The engine was surging rapidly. The tacometer reached 7,000rpm and vehicle accelerated to 90mph. Driver was applying normal pressure to the gas pedal when the acceleration began. He attempted to stop the car by using the brakes with no success. The car was almost out of control, so the owner turned the engine off and pulled to the shoulder of the freeway. The car was towed to the dealer in which it was purchased from and no repeat of the incident could be preformed. Dealer investigated accelertor cable, scanned check for codes, throttle body and gas pedal, no diagnosis could be made. Owner's express life threatening and safety concerns pertaining to this vehicle. We would like to participate in the study to determine the condition of this vehicle.