Vibration Diagnosis and Correction | Diagnostic Information and Procedures | Document ID: 5039440
- Begin the diagnosis of a vibration concern by reviewing Diagnostic Starting Point - Vehicle to
become familiar with the diagnostic process used to properly diagnose vibration concerns.
- After verifying the vehicle and vehicle systems are functioning properly, proceed to Vibration
Diagnosis, Starting Point, and Correction and attempt to duplicate the customer concern.
Symptom Tables
Refer to a Vibration Analysis table as indicated in the following symptom tables, based on the
most dominant characteristic of the customer’s vibration concern, felt or heard, that is evident
during the appropriate condition of the occurrence.
Vibration Symptoms that are Felt
| Category |
Description |
Typical Frequen Range |
cy Condition of Occurrence |
Area of Focus |
| Shake |
Can sometimes be seen or felt in the steering wheel, seat or console. Related terminology: shimmy, wobble, waddle, shudder, hop |
5–20 Hz |
Vehicle Speed Sensitive Still occurs during coast down in NEUTRAL |
Go to Vibration Analysis - Tire and Wheel |
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Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
| Category |
Description |
Typical Frequen Range |
cy Condition of Occurrence |
Area of Focus |
| Roughnes |
Similar to the feeling of s holding a jigsaw. |
20–50 Hz |
Vehicle Speed Sensitive Still occurs during coast down in NEUTRAL |
Go to Vibration Analysis - Tire and Wheel |
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Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
| Buzz |
Similar to the feeling of holding an electric razor. May be felt in the hands through the steering wheel, in the feet through the floor, or in the seat of the pants. |
50–100 Hz |
Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
| Tingling |
May produce a “pins and needles” sensation or may put hands or feet “to sleep”. Highest vibration frequency range that can still be felt. |
Greater than 100 Hz |
Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
Vibration Symptoms that are Heard
| Category |
Description |
Typical Frequen Range |
cy Condition of Occurrence |
Area of Focus |
| Boom |
Usually heard as an interior noise similar to the noise of a bowling ball rolling down an alley, deep thunder, or a bass drum. Related terminology – droning, growling, moaning, roaring, rumbling, humming May not be accompanied by a perceptible vibration (roughness) |
20–60 Hz |
Vehicle Speed Sensitive Still occurs during coast down in NEUTRAL |
Go to Vibration Analysis - Tire and Wheel |
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Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
| Moan or Drone |
Similar to the sound of a bumblebee or blowing air across the top of a bottle. Related terminology – humming, buzzing, resonance May be accompanied by a perceptible vibration (buzz) |
60–120 Hz |
Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
| Howl |
Similar to the sound of the wind howling. |
120– 300 Hz |
Vehicle Speed Sensitive Affected by torque/load |
Go to Vibration Analysis - Driveline |
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Vehicle Speed Sensitive Affected by steering input |
Go to Vibration Analysis - Hub and/or Axle Input |
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|
Engine Speed Sensitive |
Go to Vibration Analysis - Engine |
| Category |
Description |
Typical Frequen Range |
cy Condition of Occurrence |
Area of Focus |
| Whine |
Similar to the sound of mosquitoes, turbine engines, or vacuum cleaners. |
300– 500 Hz |
Vehicle Speed Sensitive Affected by torque/load – 2WD mode |
Go to Transmission diagnostic information |
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Vehicle Speed Sensitive Affected by torque/load – 4WD mode |
Go to Transfer Case diagnostic information |