2007 Ford Explorer engine problems
severe 28 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Owners have filed 28 engine complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
The failure pattern owners describe
Buyer takeaway: The 2007 Explorer has documented problems with radiator leaks starting around 50,000 miles (design flaw, no recall), engine stalling with no diagnostic codes found, and harmonic balancer failure causing belt damage. Before buying used, have the cooling system pressure-tested and get a pre-purchase inspection focused on stalling, coil condition, and belt wear.
Owners report multiple distinct engine and cooling-system failures in 2007 Explorers. The radiator leaks from the aluminum-plastic seam at the top, typically starting around 50,000 miles—one owner had to replace it three times. Ford's mounting system is blamed; the parts supplier notes the defect voids warranty.
Engine stalling without warning is common, often around 42,000 to 70 MPH. Dealers cannot find trouble codes, and the problem recurs unpredictably. Computer reprogramming and sensor replacement (ABS tone ring, battery) have not resolved it.
Harmonic balancer failure produces loud squealing that worsens despite belt replacement, cascading to tensioner and belt damage. One owner reports engine fire during normal driving.
The exhaust manifold bolts rust out around 45,000 miles—steel fasteners into an aluminum head create galvanic corrosion, allowing fumes into the cabin. Engine coils fail repeatedly (one owner needed all eight replaced thirty times). Throttle body assembly stalls occur suddenly, sometimes without warning. Coolant leaks from heater hose detaching and melting on the hot exhaust.
No recalls exist for the radiator defect despite owner research showing hundreds of complaints online. Ford has offered no assistance for repeat failures.
Same Ford Explorer engine reports on nearby years: 2005 · 2006 · 2008
Failure modes owners describe
Harmonic balancer failure
Harmonic balancer develops material failure causing loud squealing from engine compartment. Failure cascades to damage serpentine belt, tensioner, and threatens overall engine durability.
When: Early ownership; squealing reported after a couple weeks of purchase
Symptoms owners cite: Loud squealing noise from engine compartment; Squealing occurs at idle and while driving; Squealing stops periodically then restarts at takeoff; Loss of power sensation during driving; Premature belt wear
Repairs/costs cited: Belt replacement does not resolve the issue; actual repair requires harmonic balancer replacement
Recalls/TSBs owners mention: No recall issued despite reported frequency across Explorer and Expedition models
Radiator leaking (aluminum-plastic seam failure)
Radiator fails at aluminum-plastic seam at top, seeping then progressively leaking coolant. Reported on multiple 2006-2007 V6 models; some owners report three replacements over vehicle life. Defect tied to Ford mounting system design.
When: 50,000-69,000 miles typical; one owner at 36,000 miles
Symptoms owners cite: Seeping fluid from radiator top seam; Visible coolant leak beneath vehicle; Coolant level dropping; Engine smell; Leak progressively worsens
Repairs/costs cited: Radiator replacement; some owners report part number and notes that warranties no longer honored due to mounting system defect; costs not specified in narratives
Recalls/TSBs owners mention: Class action lawsuit mentioned; no recall; no warranty support for repeat failures
Throttle body assembly failure
Throttle body assembly malfunctions, causing sudden complete loss of engine power and power steering without warning. Unofficial recall made to many Ford models but not communicated to owners.
When: Normal driving conditions
Symptoms owners cite: Sudden loss of engine power; Loss of power steering; Wrench warning light illumination; Complete stall without restart ability until part replaced; Engine shutdown during rain hazardous situations
Repairs/costs cited: Throttle body assembly replacement required; one owner cited $481 repair charge
Recalls/TSBs owners mention: Unofficial recall issued but not communicated to affected owners; manufacturer denied responsibility for payment
Repeated engine stalling (undiagnosed)
Vehicle stalls abruptly during normal driving with no consistent trigger. Multiple diagnostic attempts at dealer and independent shop yield no trouble codes. Problem remains unresolved; shops unable to reproduce issue or identify root cause.
When: Various mileages from 42,000 to 213,000 miles
Symptoms owners cite: Engine stalls without warning during normal highway and local driving (25-70 MPH); All dashboard warning lights illuminate (engine, wrench, oil can, check engine); Vehicle can restart after stalling; Stalling recurs intermittently; No consistent pattern; Happens multiple times over days or weeks
Repairs/costs cited: No trouble codes found on diagnostic; shops suggest computer reprogram without confirmed success; ABS tone ring replacement and battery replacement attempted without resolving problem; costs cited as $465 for diagnostics
Recalls/TSBs owners mention: Manufacturer notified; no assistance offered
Engine coil failures (repeated)
Multiple engine coils fail repeatedly, causing power loss and excessive vibration. One owner had all eight coils replaced thirty times across dealer and independent repairs using both OEM and aftermarket parts; failure persisted.
When: 20,000 miles
Symptoms owners cite: Reduction in engine power; Excessive vibration; Vehicle unable to maintain safe speed (45 MPH)
Repairs/costs cited: All eight coils replaced 30 times total across multiple dealer visits (two-week stays each) and independent shop visits; aftermarket coils also failed
Recalls/TSBs owners mention: Manufacturer notified; no resolution provided
Coolant leak from heater hose
Lower heater hose separates or detaches on right side, falls onto exhaust manifold, and melts through hose creating major coolant leak. Requires hose replacement.
When: Mileage not specified
Symptoms owners cite: Engine smell; Coolant level low; Major coolant leak under engine; Hose melted by contact with hot exhaust
Repairs/costs cited: Heater hose replacement part 6L2Z*18C553*C; repair cost $481; appears to be recurring issue per multiple owner reports
Recalls/TSBs owners mention: No recall or service bulletin coverage; owner paid out-of-pocket
Radiator and cooling system cascade failure
Radiator failure leads to thermostat malfunction and defective radiator updates required. Overheating persists even after radiator, water pump, heater core replacement.
When: 69,000-123,000 miles
Symptoms owners cite: Temperature gauge increases abnormally; Green fluid leaking from vehicle; Vehicle overheating at highway speed (65 MPH); High temperatures displayed on message board; Temperature gauge reads high; Overheating continues after initial repair
Repairs/costs cited: Thermostat replacement attempted; radiator update/firmware update required; radiator, water pump, heater core all replaced; one vehicle overheating persisted despite all replacements
Recalls/TSBs owners mention: Manufacturer aware; vehicle was eventually repaired but repeated failures reported
Melted engine intake components
Engine intake manifold components melt abnormally during operation, causing power loss and stall. Related to radiator failure and cooling system overload.
When: 56,000 miles
Symptoms owners cite: Loss of power while driving 55 MPH; Vehicle stalls; Warning light illumination; Vehicle locks up
Repairs/costs cited: Multiple melted intake components found upon dealer inspection; vehicle not repaired at time of complaint
Engine fire
Vehicle catches fire without warning during normal driving. Owner opened hood and flame shot out. Vehicle fully engulfed.
When: Mileage not specified
Symptoms owners cite: Engine hesitation/running poorly (pulling back sensation); Bad smell inside vehicle; Flame shooting from engine compartment when hood opened; Rapid fire spread
Repairs/costs cited: Vehicle not diagnostically tested; caught fire before repair could occur
Piston fracture requiring engine replacement
Engine pistons fracture unexpectedly during normal driving, causing complete engine failure requiring replacement.
When: 138,000 miles
Symptoms owners cite: Vehicle stalls while driving 55 MPH; Check engine light illuminated; Vehicle locks up immediately after stall
Repairs/costs cited: Dealer confirmed piston fracture; full engine replacement required and performed
Recalls/TSBs owners mention: Manufacturer contacted; no assistance offered
Exhaust manifold bolt corrosion
Steel bolts securing exhaust manifold to aluminum cylinder head corrode and fail. Design flaw combining dissimilar metals causes galvanic corrosion. Broken bolts allow exhaust fumes to enter passenger compartment.
When: 45,000-73,000 miles
Symptoms owners cite: Loud revving noise inside vehicle; Exhaust fumes in passenger compartment; Fumes diminish after engine warmup; Bolts rusted despite vehicle age
Repairs/costs cited: Exhaust manifold and two studs replacement required (4.6L V-8); steel bolts into aluminum head frame identified as design defect
Recalls/TSBs owners mention: Manufacturer notified
A/C compressor premature failure
Air conditioning compressor fails well before expected service life, first failure at 38 months / 92,000 miles, then again at 55 months / 113,000 miles.
When: 38 months and 92,000 miles first failure; 55 months and 113,000 miles second failure
Symptoms owners cite: A/C compressor inoperative
Repairs/costs cited: First replacement cost $1,500+; second replacement covered under 2-year warranty on first replacement part
Recalls/TSBs owners mention: No explanation provided for premature failure
Thermostat housing unit cracking
Thermostat housing unit develops cracks requiring replacement of water outlet assembly.
When: Mileage not specified
Symptoms owners cite: Coolant leak from thermostat housing
Repairs/costs cited: Water outlet 902-860 replacement required
Engine smoke and fluid leak
Smoke appears under hood during normal highway driving with fluid leak underneath vehicle.
When: 158,000 miles
Symptoms owners cite: Smoke under hood at 60 MPH; Fluid leaking underneath vehicle
Repairs/costs cited: Vehicle towed home; not diagnosed or repaired
Reverse gear malfunction with tire screech
Reverse gear causes vehicle to lurch violently and tire screech as if flooring accelerator, accompanied by coolant loss.
When: Mileage not specified
Symptoms owners cite: Vehicle loses coolant; Reverse gear causes violent lurch; Tire screech on reverse engagement; Unsafe behavior during reverse operation
Inadvertent side airbag deployment
Side airbags deploy during normal driving on rough road at low speed without collision. Engine stalled prior to deployment. Black box computer detected false crash signal.
When: 22,000 miles
Symptoms owners cite: Engine stall on bumpy road; Side airbag deployment at 10 MPH on non-crash event; All dashboard lights illuminated
Repairs/costs cited: Airbags, lining, and black box replaced
Synthesized from 28 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 engine problem on the 2007 Ford Explorer?
It's a meaningful issue. 28 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Across the 27 complaints that reported odometer mileage, most engine failures cluster between 45,000 and 112,689 miles, with the median around 69,140. A quarter of owners report trouble before 45,000; a quarter make it past 112,689. 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 $3,100 for engine 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 engine?
No active recalls currently cover engine 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.