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 MANUALSFORD2018EXPEDITION LIMITED, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 174 (ENGINE SYSTEM - GENERAL INFORMATION)DIAGNOSIS AND TESTINGENGINENOTES
2018 Ford Expedition Limited, RWD
Diagnosis And Testing: Engine: Notes
2018 Ford Expedition Limited, RWDSECTION Notes
WARNING: This page is about a different car, the 2017 Lincoln Navigator and 2017 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Special Tool(s)
| UV Long-Wave W/12-foot Cord & Alligator Clips or Leak Tracker UV-LED Leak Detection Flashlight 164-R3748 or 164-TP8695 | |
| Dial Indicator Gauge with Holding Fixture 100-002 (TOOL-4201-C) or equivalent | |
| EngineEAR 107-R2103 or equivalent | |
| EngineEAR/ChassisEAR 107-R2102 or equivalent | |
| Oil Pressure Gauge 303-088 (T73L-6600-A) | |
| Vacuum/Pressure Tester 164-R0253 or equivalent | |
| Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool |
Material
| Item | Specification |
| Dye-Lite ® Gasoline Engine Oil Leak Detection Dye 164-R3700 (Rotunda) | - |
| Motorcraft ® SAE 5W-30 Premium Synthetic Blend Motor Oil (US); Motorcraft ® SAE 5W-30 Super Premium Motor Oil (Canada) XO-5W30-QSP (US); CXO-5W30-LSP12 (Canada) | WSS-M2C946-A |
There are 2 diagnostic paths that can be followed depending on the type of engine concern. Carry out either Inspection and Verification - Engine Performance or Inspection and Verification - Engine 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.