Vibration Problems

To correct problems of excessive vibration at idle speed, perform the following 4 steps:

  1. Check for installation of vibration damper (1981 – 82 only)
    • Check to see if the vibration damper is installed in the front bumper.
    • The damper helps soften secondary vibrations from the engine.
    • If the car already has a damper installed, check to make sure that the insulator is installed with the damper. If the insulator is not used, the damper will not be as effective.
  2. Check and adjust motor mounts
    • One of the purposes of the motor mounts is to insulate engine noise and vibration from the body assembly. If the motor mounts are collapsed or if they are misaligned, excessive engine vibration will be transferred to the body.
    • The first step is to inspect the mounts to make sure they are not collapsed. Pay close attention to the right side engine mount on cars with dealer installed air-conditioning. The next step it to adjust the engine mounts so they are aligned and free of tension.
  3. Adjust the steering column
    • If the steering column assembly is not installed with the proper amount of tension, it will vibrate at idle. This will result in excessive vibration in the steering wheel and dashboard.
    • To correct the problem, loosen the clamping bolt for the steering lock assembly and pull upward on the steering wheel to tension the steering column, then retighten the bolt.
  4. Adjust the idle speed
    • The engine idle speed should be adjusted within the specified range, at the point where the least vibration occurs.