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2017 Ford Expedition
Reliability tier: verified - see /disclosure/
Engine: 3.5L V6 EcoBoost (Gen1) (Ford EcoBoost, 3.5L)
3.5L EcoBoost twin-turbo V6 (Gen1 tune), 365 hp @ 5,000 / 420 lb-ft @ 2,500; 6R80. First Expedition without a V8 option.
Applicable failure modes (7)
- Cam phaser / VCT rattle and cam-timing DTCs
- Cooling service: thermostats, hoses, degas system under tow load
- Internal mechanical failures / long-block decisions
- Low-pressure fuel delivery (in-tank pump / pressure faults)
- Ignition misfires: spark plugs and COP coils
- Turbo / wastegate / boost-control faults
- Internal water pump: coolant loss and coolant-into-oil risk
Applicable parts (25)
- 3.5L EcoBoost Charge Air Cooler, Gen1 (DL3Z-6K775-B)
- 3.5L EcoBoost Cam Phaser / Timing Actuator (AT4Z-6256-B)
- 3.5L EcoBoost Charge Air Duct (BL3Z-6C646-A, 2011-2014 F-150 / 2015-2017 Expedition-Navigator)
- 3.5L EcoBoost Intercooler Outlet Tube, cold side (BL3Z-6F073-A, 2011-2014 F-150 / 2015-2017 Expedition-Navigator)
- 3.5L EcoBoost Coolant Tube Assembly (Ford BL3Z-8K153-AB, 2011-2016 F-150 / Transit 2015-2019)
- Cooling system refill with fresh coolant (service item, all 3.5L EcoBoost applications)
- In-tank fuel filter service (integral to the pump module, all 3.5L EcoBoost applications)
- 3.5L EcoBoost GDI Injector, Gen1 (BL3Z-9F593-B)
- Cylinder head / block machining and SSM calibration updates (service item, long-block decisions)
- HPFP failure contamination procedure - flush, rails, injector inspection (service item)
- 3.5L EcoBoost High-Pressure Fuel Pump, Gen1 (current number BL3Z-9350-D)
- 3.5L EcoBoost Ignition Coil, Gen1 (BL3Z-12029-C)
- Engine oil and filter change (service item, all 3.5L EcoBoost applications)
- 3.5L EcoBoost Spark Plug, Gen1 (current number CYFS-12-YT4X)
- 3.5L EcoBoost Thermostat, Gen1-Gen2 (BL3Z-8575-B)
- 3.5L EcoBoost Thermostat Housing / Water Outlet, Gen1-Gen2 (BL3Z-8A586-G)
- 3.5L EcoBoost Timing Chain (AT4Z-6268-C)
- 3.5L EcoBoost Timing Chain Guide (AT4Z-6B274-A)
- 3.5L EcoBoost Timing Chain Tensioner (BL3Z-6L266-A)
- 3.5L EcoBoost Turbocharger Assy, Gen1 (pair DL3Z-6K682-E / -F)
- 3.5L EcoBoost Turbo Control Solenoid, Gen1 (BL3Z-9K378-A)
- 3.5L EcoBoost Valve Cover (BL3Z-6582-H, other side)
- 3.5L EcoBoost Valve Cover (DL3Z-6582-C, one side)
- 3.5L EcoBoost Valve Cover Gasket, Gen1 (pair BL3Z-6584-A / DL3Z-6584-B)
- 3.5L EcoBoost VCT Solenoid (Ford AT4Z-6M280-A / -B, one per intake/exhaust position; four per engine)
Platform recipes (5)
- CAC-condensation shudder fix: the Gen1 pattern (humid-day single shudder after light-throttle cruising) traces to pooled condensate in the charge-air cooler
- Ignition service for the boost-stressed 3.5L EcoBoost: misfire DTCs first, then plugs and the failed coil(s)
- Cam-phaser rattle / timing-chain service: the cold-start rattle and cam-timing DTCs (P0011/P0015-P0019/P0365/P0369) span generations - Gen2 got formal TSBs (20-2191/20-2166/20-2315) and the 21N08/21B10-S1 PCM-reprogram field actions; Gen1 carries the chain-wear story (TSB 17-0026)
- Turbo / boost-control service: boost DTCs (P0236/P0238/P0299 family) first, hardware second
- Internal water-pump service: the 3.5L EcoBoost carries the pump inside the front cover - a failed seal can send coolant into the oil pan (bearing damage) or leak externally