Operating Condition - Vehicle is Moving

WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.

Depends more on how the vehicle is operated
1. Speed related.
  - Related to vehicle speed.
    - Pitch increases with vehicle speed. GO to SYMPTOM CHART - TIRE NOISE/VIBRATION .
    - Noise occurs at specific vehicle speed. A high-pitched noise (whine). GO to SYMPTOM CHART - DRIVELINE NOISE/VIBRATION .
    - Loudness proportional to vehicle speed. Low-frequency noise at high speeds, noise and loudness increase with speed. GO to SYMPTOM CHART - DRIVELINE NOISE/VIBRATION .
    - A low-pitched noise (drumming). GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
    - Vibration occurs at a particular speed (mph) regardless of acceleration or deceleration. GO to SYMPTOM CHART - TIRE NOISE/VIBRATION .
    - Noise varies with wind/vehicle speed and direction. GO to SYMPTOM CHART - AIR LEAK AND WIND NOISE .
  - Related to engine speed.
    - Noise varies with engine RPM. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
    - Vibration occurs at a particular speed (mph) regardless of engine speed (RPM).
2. Acceleration.
  - Wide open throttle (WOT).
    - Engine induced contact between components. Inspect and repair as necessary.
    - Noise is continuous throughout WOT. Exhaust system or engine ground out. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
  - Light/moderate acceleration.
    - Tip-in moan. Engine/exhaust noise. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
    - Knock-type noise. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
    - Driveline shudder. GO to SYMPTOM CHART - DRIVELINE NOISE/VIBRATION .
    - Engine vibration. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
3. Turning noise. GO to SYMPTOM CHART - STEERING NOISE/VIBRATION .
4. Braking.
  - Clicking sound is signaling ABS is active. Acceptable ABS sound.
  - A continuous grinding/squeal. GO to SYMPTOM CHART - BRAKE NOISE/VIBRATION .
  - Brake vibration/shudder. GO to SYMPTOM CHART - BRAKE NOISE/VIBRATION .
5. Shifting.
  - Noise or vibration condition related to the transmission (automatic). GO to SYMPTOM CHART - TRANSMISSION (AUTOMATIC) NOISE/VIBRATION .
6. Cruising speeds.
  - Accelerator pedal vibration. GO to SYMPTOM CHART - ENGINE NOISE/VIBRATION .
  - Driveline vibration. GO to SYMPTOM CHART - DRIVELINE NOISE/VIBRATION .
  - A shimmy or shake. GO to SYMPTOM CHART - TIRE NOISE/VIBRATION .
7. Driving at low/medium speeds.
  - A wobble or shudder. GO to SYMPTOM CHART - TIRE NOISE/VIBRATION .
Depends more on where the vehicle is operated
1. Bump/pothole, rough road or smooth road. GO to SYMPTOM CHART - SUSPENSION NOISE/VIBRATION .
  - Noise is random or intermittent occurring from road irregularities. GO to SYMPTOM CHART - SQUEAK AND RATTLE .
  - Noise or vibration changes from one road surface to another. Normal sound changes.
  - Noise or vibration associated with a hard/firm ride. GO to SYMPTOM CHART - SUSPENSION NOISE/VIBRATION .