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 570 (DRIVESHAFT)DIAGNOSIS AND TESTINGDRIVESHAFTSYMPTOM CHART(S)SYMPTOM CHART: NVH
2021 Ford Edge SE, 4WD
Symptom Chart: NVH
2021 Ford Edge SE, 4WDSECTION Symptom Chart: NVH
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.
Symptom Chart
| Condition | Actions |
|---|---|
| Driveline clunk - loud clunk when shifting from REVERSE to DRIVE | GO to Pinpoint Test A |
| Driveline clunk -- occurs as the vehicle starts to move forward following a stop | GO to Pinpoint Test B |
| Driveline Clunk- Fastener Torque to transmission and rear axle | GO to Pinpoint Test C |
| Buzz - buzzing noise is the same at cruise or coast/deceleration | GO to Pinpoint Test D |
| Rumble or Boom - noise occurs at coast/ deceleration, usually driveshaft speed-related and noticeable over a wide range of speeds | GO to Pinpoint Test E |
| Grunting -- normally associated with a shudder experienced during acceleration from a complete stop | GO to Pinpoint Test F |
| Driveline shudder - occurs during acceleration from a slow speed or stop | GO to Pinpoint Test G |
| Driveline vibration - occurs at cruising speeds | GO to Pinpoint Test H |
RENDER: 1.0x
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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.