2006 Ford Expedition fuel system problems
severe 13 complaints filed with NHTSA · avg repair $1,200 · see fuel system across all vehicles →
Among the 7 model years of Ford Expedition in our records for fuel system problems, this one ranks #3 by owner-complaint volume.
The failure pattern owners describe
Owners consistently report two distinct failure patterns. The first is engine failsafe mode: the engine shuts down without warning during normal driving, usually between 50,000 and 65,000 miles. Complaints describe the throttle body sticking, loss of throttle response, and sudden power loss on highways, during turns, and at traffic lights. Restarting the vehicle temporarily restores function. Dealers attribute this to throttle body malfunction and quote $500–$800 for replacement, though computer diagnostics often read normal.
The second pattern involves fuel-system defects. Fuel injectors leak raw fuel into the crankcase, contaminating oil and signaling a stuck injector problem. A Ford senior technician found rust debris from an internally corroded fuel rail inside the leaking injector. Owners also report a fuel pump failure resulting in complete loss of power, a defective charcoal canister allowing exhaust fumes into the cabin, and most critically, fuel-system fires—one near 125,000 miles with a hole in the fuel line and black smoke, and another igniting from the fuel tank while parked, destroying the vehicle in minutes.
The complaint narratives note that 2005 F-Series models received a recall for injector and fuel-rail defects, but 2006–2007 Expeditions were not included despite identical failures occurring in high numbers.
Same Ford Expedition fuel system reports on nearby years: 2005 · 2007
Failure modes owners describe
Leaking Fuel Injector
Fuel injector leaks raw fuel into the combustion chamber, overfilling the crankcase with fuel and contaminating engine oil. Rust debris from internally corroded fuel rail found inside injector.
When: Reported at 50,000+ miles; complaint #1 references 2005 F-Series having recall, 2006-2007 should have been included
Symptoms owners cite: Raw fuel smell inside vehicle; Engine oil overfilled by 1 quart and smelling of fuel; Rust shards in fuel injector housing
Repairs/costs cited: Injector replacement and oil change; owner wants fuel rail and injectors replaced
Recalls/TSBs owners mention: 2005 F-Series Expeditions/Navigators had recall for injectors; 2006-2007 models should have been included but were not. Separate recall exists for rusting fuel rails but only covers replacement, not underlying cause.
Throttle Body Malfunction / Engine Failsafe Mode
Throttle body sticks or electronic throttle control fails, triggering engine failsafe mode that restricts RPM and causes engine shutdown. Vehicle loses responsiveness to operator throttle input. Multiple complaints indicate issue occurs around 50,000-65,000 miles.
When: Typically 50,000-65,000 miles; complaint #2 notes mileage range 50-55K across multiple owners; failures occur at random intervals during normal driving
Symptoms owners cite: Engine failsafe mode indicator comes on; Throttle body stuck wide open (OBD code); Vehicle stalls and will not restart for short period; Loss of throttle control and acceleration response; Engine shuts down during highway driving, at stops, and during turns; Vehicle deceleration without operator input
Codes mentioned: Throttle Body Stuck Wide Open, Engine Failsafe Mode
Repairs/costs cited: Throttle body replacement (dealers quote $500-$800); throttle position sensor cleaning mentioned; some complaints note computer diagnostics read normal despite failsafe activation
Recalls/TSBs owners mention: Ford Service Department confirms this is a 'common occurrence' on 2006 Expeditions; service bulletin mentioned by dealer but stated it did not apply to complainant's VIN; no bulletin found in ODI database per complaint #2
Fuel Pump Failure
Fuel pump stops functioning, resulting in complete loss of engine power and all electrical systems (steering and brakes affected). Vehicle immobilized with no warning.
When: Complaint #7 does not specify mileage
Symptoms owners cite: Complete loss of power to vehicle; Loss of steering control; Loss of brake control; Vehicle immobilized during driving
Repairs/costs cited: Fuel pump replacement part cost $500
Fuel Line Rupture with Fire
Hole develops in fuel line leading to fuel leak, abnormal burning odor, and black smoke from tailpipe. Combined with electrical problem, results in fire inside vehicle and under frame.
When: Approximately 125,000 miles
Symptoms owners cite: Vehicle deceleration without operator input; Abnormal burning odor; Black smoke from tailpipe; Thick black smoke pouring from inside vehicle; Flames from interior and under frame
Repairs/costs cited: Vehicle destroyed; insurance unable to determine cause
Recalls/TSBs owners mention: Manufacturer not contacted by owner; fire chief noted hole in fuel line and possible electrical problem but results were inconclusive
Defective Charcoal Canister (EVAP System)
Charcoal canister fails, allowing exhaust fumes to enter cabin. Engine warning light illuminates.
When: Approximately 70,000 miles
Symptoms owners cite: Exhaust fumes inside vehicle; Engine warning light illuminated
Repairs/costs cited: Part not available at time of complaint
Recalls/TSBs owners mention: Manufacturer made aware; part unavailable
Unintended Acceleration
Vehicle accelerates on its own without operator input, particularly during low-speed maneuvers. Vehicle unable to decelerate.
When: Complaint #12 does not specify mileage or age
Symptoms owners cite: Vehicle accelerates on its own while slowing down and turning; Continued acceleration toward obstacle
Repairs/costs cited: Vehicle totaled; driver airbag did not deploy
Fuel Tank Fire
Fire develops from top of fuel tank shortly after vehicle is parked, spreading rapidly and destroying vehicle within 15 minutes.
When: Less than 3 minutes after parking
Symptoms owners cite: Fire at top of fuel tank; Rapid fire spread
Repairs/costs cited: Vehicle destroyed
Synthesized from 13 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 0 most recent
Common questions
How serious is the fuel system problem on the 2006 Ford Expedition?
It's a meaningful issue. 13 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,200.
At what mileage does the fuel system typically fail?
Across the 13 complaints that reported odometer mileage, most fuel system failures cluster between 66,000 and 111,400 miles, with the median around 78,123. A quarter of owners report trouble before 66,000; a quarter make it past 111,400. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $1,200 for fuel system repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to fuel system?
No active recalls currently cover fuel system issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.