Ford Explorer
3.5L naturally aspirated V6 with twin independent variable cam timing (Ti-VCT). 290 hp, 255 lb-ft. The most common Explorer V engine. Achilles heel: the internally mounted water pump that leaks coolant into the engine oil when the seal fails — total engine destruction follows. Exhaust manifold cracks around 60,000 miles. Fundamentally strong and durable engine when the water pump is replaced proactively.
The American standard
The 3.5L V6 is the bread-and-butter engine in the Explorer V. 290 hp moves the big SUV confidently, but excitement is elsewhere. Solid and reliable when the water pump holds, a bit thirsty.
Engine Weaknesses 3
The water pump sits behind the timing cover and is driven by the primary chain. When the seal fails, coolant enters the crankcase directly — bearing damage and total engine failure follow. Repair requires 10-15 hours of labor at $2,000-$3,500.
Symptoms: Unexplained coolant loss with no visible leak, milky oil on the dipstick, faint chain rattle on cold start, low oil pressure warning.
Variable valve timing phasers wear out and produce a rattle on cold startup that worsens over time. P0016/P0017 codes. Chain guides and tensioners age in the same oil circuit as the water pump.
Symptoms: Rattling or knocking noise on cold start (sounds like a diesel at idle), noise fades after warmup. Rough running, check engine light.
The 3.5L V6 exhaust manifolds develop cracks from thermal cycling. Exhaust gases enter the engine bay and potentially the passenger cabin. NHTSA investigated 1.3 million Explorers for cabin CO intrusion linked to cracked manifolds.
Symptoms: Ticking noise on cold start that fades when warm, exhaust smell inside the cabin especially under hard acceleration, elevated CO readings.
Vehicle Weaknesses 7
Major safety issue: the rear suspension toe link can fracture, causing loss of vehicle control. Multiple NHTSA investigations, 413,000 vehicles recalled (26V101). Cross-axis ball joint seizure puts excessive stress on the toe link until it breaks.
The electric power steering can fail intermittently — steering suddenly becomes heavy. NHTSA recall 14V286000 for 2011-2013 models. Software update and potential steering gear assembly replacement as the fix.
Cracked exhaust manifolds allow fumes into the engine bay and through the HVAC into the cabin. Worst under hard acceleration with recirculation mode on. NHTSA investigated 1.3 million vehicles. Ford TSB 16-0166, Customer Service Program CSP-17N03.
Ford recalls 412,774 Explorers model years 2017-2019 — rear toe links can fracture. NHTSA recall 26V101 / Ford 26S08. Cross-axis ball joint seizure causes excessive stress. Dealers replace with reinforced toe links at no cost.
The aluminum hood corrodes under the paint — iron particles from manufacturing attack the aluminum. Blistering and peeling along the hood edges. Particularly affects 2013-2016 models. Ford TSB 17-0062, but no official recall.
The blend door actuator behind the dashboard fails frequently — rhythmic clicking and incorrect temperature distribution result. Part itself is cheap ($70), but labor costs are high if the dashboard must be removed.
Liftgate motor or gas strut fails — tailgate no longer opens automatically or drops down. Common wear item starting around 50,000 miles.