Operating Condition - Vehicle is Moving

WARNING: This page is about a different car, the 2006 Mercury Montego, 2006 Ford Freestyle, and 2006 Ford Five Hundred. 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 TABLE - TIRE NOISE/VIBRATION .
    - Noise occurs at specific vehicle speed. A high-pitched noise (whine). GO to SYMPTOM TABLE - DRIVELINE NOISE/VIBRATION .
    - Loudness proportional to vehicle speed. Low-frequency noise at high speeds, noise and loudness increase with speed. GO to SYMPTOM TABLE
    - Driveline Noise/Vibration.
    - A low-pitched noise (drumming). GO to SYMPTOM TABLE - ENGINE NOISE/VIBRATION .
    - Vibration occurs at a particular speed (mph) regardless of acceleration or deceleration. GO to SYMPTOM TABLE - TIRE NOISE/VIBRATION .
    - Noise varies with wind/vehicle speed and direction. GO to SYMPTOM TABLE
    - Air Leak and Wind Noise.
  - Related to engine speed.
    - Noise varies with engine rpm. GO to SYMPTOM TABLE - 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 TABLE
    - Engine Noise/Vibration.
  - Light/moderate acceleration.
    - Tip-in moan. Engine/exhaust noise. GO to SYMPTOM TABLE - ENGINE NOISE/VIBRATION .
    - Knock-type noise. GO to SYMPTOM TABLE - ENGINE NOISE/VIBRATION .
    - Driveline shudder. GO to SYMPTOM TABLE - DRIVELINE NOISE/VIBRATION .
    - Engine vibration. GO to SYMPTOM TABLE - ENGINE NOISE/VIBRATION .
3. Turning noise. GO to SYMPTOM TABLE - STEERING NOISE/VIBRATION .
4. Braking.
  - Clicking sound is signaling ABS is active. Acceptable ABS sound.
  - A continuous grinding/squeal. GO to Symptom Table - Brake Noise/Vibration.
  - Brake vibration/shudder. GO to Symptom Table - Brake Noise/Vibration.
5. Shifting.
  - Noise or vibration condition related to the transmission (automatic). GO to SYMPTOM TABLE - TRANSMISSION (AUTOMATIC) NOISE/VIBRATION .
6. Cruising speeds.
  - Accelerator pedal vibration. GO to SYMPTOM TABLE - ENGINE NOISE/VIBRATION .
  - Driveline vibration. GO to SYMPTOM TABLE - DRIVELINE NOISE/VIBRATION .
  - A shimmy or shake. GO to SYMPTOM TABLE - TIRE NOISE/VIBRATION .
7. Driving at low/medium speeds.
  - A wobble or shudder. GO to SYMPTOM TABLE - TIRE NOISE/VIBRATION .
Depends more on where the vehicle is operated
1. Bump/pothole, rough road or smooth road. GO to SYMPTOM TABLE - SUSPENSION NOISE/VIBRATION .
  - Noise is random or intermittent occurring from road irregularities. GO to SYMPTOM TABLE - 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 TABLE - SUSPENSION NOISE/VIBRATION .