Three problems related to vehicle speed control have been reported for the 1998 Oldsmobile Achieva. The most recently reported issues are listed below.
I own a 1998 olds acheiva. My throttle idle sensor has to be replaced for the 4th time. It is dangerous as the car picks up speed on its own, and is difficult to stop. These repairs are excessive and expensive.
While pressing on brake pedal vehicle will suddenly start to accerlerate with great force. Dealer has been contacted. Consumer stated that the vehicle was lunging forward after throttle motor valve was replaced.
At any speed vehicle will accelerate up to 70 mph, making it hard to stop vehicle. Took to dealer, and they said maybe the mat was getting stuck between pedal. 2nd time they said it was the computer, and third time they said solenoid was bad. Then they said abs had a short in it. Dealer still has not found the cause of the problem.
| Vehicle Speed Control problems | |
| Speed Control Linkage problems |