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.
2003 Ford Excursion 6.8 S, RWDFACTORY OEM SERVICE PROCEDURE
Repair and Diagnosis
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Quick Lookups- Accessories & Equipment
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- Rear View Mirrors System - Excursion & F250-F550 Super Duty
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- Driveline System - General Information -- Excursion & F250-F550 Super Duty
- Rear Drive Axle/Differential - Ford 10.50-Inch Ring Gear -- Excursion & F250-F350 Super Duty
- Wheel Hubs & Bearings - Full Floating Axle - DANA - F350-F550 Super Duty
- Wheel Hubs & Bearings - Full Floating Axle - Ford - Excursion & F250-F350 Super Duty
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- Mode 6 - 2003 Ford - Except Diesel
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- Remove, Overhaul & Install
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- Engine Controls - Basic Diagnostic Procedures - Except Diesel
- Engine Controls - Self-Diagnostics Introduction - CNG, Flex-Fuel & Gasoline
- Engine Controls - System & Component Tests - Gasoline
- Engine Controls - System Test A Through DU - CNG, Flex-Fuel & Gasoline
- Engine Controls - System Test DV Through JD - CNG, Flex-Fuel & Gasoline
- Engine Controls - System Test JE Through Z - CNG, Flex-Fuel & Gasoline
- Engine Controls - Theory & Operation - CNG, Flex-Fuel & Gasoline
- Engine Controls - Trouble Shooting - No Codes - CNG, Flex-Fuel & Gasoline
- Testing & Diagnosis
- Engine Controls - Basic Diagnostic Procedures - Except Diesel
- Engine Controls - Self-Diagnostics Introduction - CNG, Flex-Fuel & Gasoline
- Engine Controls - System & Component Tests - Gasoline
- Engine Controls - System Test A Through DU - CNG, Flex-Fuel & Gasoline
- Engine Controls - System Test DV Through JD - CNG, Flex-Fuel & Gasoline
- Engine Controls - System Test JE Through Z - CNG, Flex-Fuel & Gasoline
- Engine Controls - Theory & Operation - CNG, Flex-Fuel & Gasoline
- Engine Controls - Trouble Shooting - No Codes - CNG, Flex-Fuel & Gasoline
- Theory and Operation
- General Information
- Abbreviations
- Basic Trouble Shooting
- Brakes
- Check Lists
- Computer Relearn Procedures
- Driveline/Axles
- DTC Index -- Cab & Chassis, Excursion & F250-F550 Super Duty
- Electrical
- Engine
- Engine Performance
- Electrostatic Discharge Warning - General Information
- Engine Performance Diagnostic Routine Outline - General Information
- Engine Performance Safety Precautions
- Map - Engine Performance & Maintenance
- Parasitic Load Explanation & Test Procedures - General Information
- State Emission Standards - Diesel
- State Emission Standards - Gas
- Waveforms - Injector Pattern Tutorial - General Information
- Map - Exhaust Systems
- Heating, Ventilation & A/C (HVAC)
- Hoist/Jack
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- Specifications Index
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- Trouble Shooting - Manual Transmission - General Information
- Heating, Ventilation & A/C (HVAC)
- A/C Compressor
- General Servicing
- HVAC Control Systems
- HVAC - Air Distribution System & Filtering System - Excursion & F250-F550 Super Duty
- HVAC Control System - Excursion & F250-F550 Super Duty
- HVAC System - Air Conditioning -- Excursion & F250-F550 Super Duty
- HVAC System - General Information -- Excursion & F250-F550 Super Duty
- HVAC System - Heating & Ventilation - Excursion & F250-F550 Super Duty
- Manual HVAC System - Control Components -- Excursion & F250-F550 Super Duty
- Maintenance
- Restraints
- Steering
- Suspension
- Transmission
- Automatic Trans
- Automatic Transmission - Diagnosis (4R100) Excursion & F250-F550 Super Duty
- Automatic Transmission - Overhaul - 4R100 - Excursion & F250-F550 Super Duty
- Automatic Transmission ( Removal & Installation - Excursion & F250-F550 Super Duty
- Automatic Transmission Cooler - Excursion & F250-F550
- Automatic Transmission External Controls - Excursion & F250-F550 Super Duty
- Automatic Transmission Servicing
- Automatic Trans
- External Pages
Factory Service Tools
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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.
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