Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 550 (NOISE, VIBRATION AND HARSHNESS)
2021 Ford Edge SE, 4WD
Section 550 (Noise, Vibration And Harshness)
2021 Ford Edge SE, 4WDSECTION Section 550 (Noise, Vibration And Harshness)
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
- Description And Operation
- Noise, Vibration and Harshness (NVH)
- Acceptable Noise, Vibration and Harshness (NVH)
- Glossary of Terms
- Amplitude:
- Boom:
- Buffet/Buffeting:
- Buzz:
- Chatter:
- Chirp:
- Chuckle:
- Click:
- Clonk:
- Clunk/Driveline Clunk:
- Conductor:
- Cycles Per Second:
- Cracks:
- Creak:
- Cycle:
- Decibel (dB):
- Drone:
- Drumming:
- Flutter:
- Frequency:
- G-force:
- Gravelly Feel:
- Grind:
- Hz (Hertz):
- Hiss:
- Hoot:
- Howl:
- Hum:
- Intensity:
- Knock:
- Moan:
- Ping:
- Pitch:
- Pumping Feel:
- Rattle:
- Reactor:
- Roughness:
- Rustling:
- Shake:
- Shimmy:
- Shudder:
- Slap:
- Squeak:
- Squeal:
- Tap:
- Thump:
- Tick:
- Tip-In-Moan:
- Transient:
- Vibration:
- Whine:
- Whistle:
- Wind Noise:
- Noise, Vibration and Harshness (NVH)
- Diagnosis And Testing
- Noise, Vibration and Harshness (NVH)
- Notes
- Diagnostic Theory
- Diagnostic Procedure Overview
- Tools and Techniques
- Diagnostic Guide
- 1: Customer Interview
- 2: Pre-Drive Check
- 3: Preparing for the Road Test
- 4: Verify the Customer Concern
- 5: Road Test
- Symptom Charts
- Noise, Vibration and Harshness (NVH) Symptoms
- Frequency Calculations
- Harshness Symptoms
- Noise, Vibration and Harshness (NVH) Symptom Chart Categories
- Symptom Chart: Vehicle-Speed Related Vibrations
- Symptom Chart-Tire-Speed Related Vibrations
- Symptom Chart-Driveshaft-Speed Related Vibrations
- Symptom Chart: Powertrain-Speed Related Vibrations
- Symptom Chart: Engine-Speed Related Vibrations
- Symptom Chart: Noise, Air Leaks or Water Leaks
- Symptom Chart: Harshness
- Noise, Vibration and Harshness (NVH)
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.