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 VARIANT/TRIMSECTION 1 (AUTOMATIC TRANSMISSION - 8-SPEED AUTOMATIC TRANSMISSION - 8F57 PART 2)
2021 Ford Edge SE, 4WD
Section 1 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 Part 2)
2021 Ford Edge SE, 4WDSECTION Section 1 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 Part 2)
WARNING: This page is about a different variant/trim than selected.
- Diagnosis And Testing
- Diagnosis By Symptom
- Symptom Chart: Automatic Transmission
- Pinpoint Tests
- Pinpoint Test A: No Engagement - Forward
- Pinpoint Test B: No Engagement - Reverse
- Pinpoint Test C: No Engagement - Both Forward And Reverse
- Pinpoint Test D: Engagement Quality - Forward
- Pinpoint Test E: Engagement Quality - Reverse
- Pinpoint Test F: Engagement Quality - Both Forward And Reverse
- Pinpoint Test G: Engagement Quality - Park
- Pinpoint Test H: Upshift Quality - Single Gear Affected
- Pinpoint Test I: Downshift Quality - Single Gear Affected
- Pinpoint Test J: Shift Quality - Multiple Gears Affected
- Pinpoint Test K: Torque Converter Clutch Operation
- Pinpoint Test L: Fluid Leaking Or Overheating
- Pinpoint Test M: Noise, Vibration, Harshness
- Pinpoint Test N: Other Concerns
- Special Testing Procedures
- A Clutch
- B Clutch
- C Clutch
- Electronic Selectable One-Way Clutch Assembly
- E Clutch
- F Clutch
- Torque Converter Clutch (TCC)
- Diagnosis By Symptom
- General Procedures
- Removal And Installation
- Halfshaft Seal LH
- Halfshaft Seal RH - AWD
- Halfshaft Seal RH - FWD
- Main Control Cover
- Main Control Valve Body
- Output Shaft Speed (OSS) Sensor
- Roll Restrictor RH
- Solenoid
- Torque Converter Seal
- Transmission
- Transmission Fluid Temperature (TFT) Sensor
- Transmission Range (TR) Sensor
- Transmission Internal Wiring Harness Frame
- Transmission Support Insulator
- Turbine Shaft Speed (TSS) Sensor
- Removal
- Overhaul
- Disassembly
- Disassembly And Assembly Of Subassemblies
- Assembly
- Installation
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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.