2017 · FordExplorer Limited
What the data shows
At 128,000 miles, this Explorer is still useful family transportation, but its expensive risks are concentrated in the 3.5L engine, 6-speed transmission, and AWD transfer unit. An internal water-pump leak can put coolant into the oil, while chain or phaser rattle shows up as a brief metallic noise at startup. The Limited trim provides comfortable seating and useful winter traction, but it is not cheap to own once those systems need work.
Budget about $13,900 for near-term risk, mainly for cooling-system or AWD repairs. Start it completely cold and listen for rattle, then scan for transmission and AWD faults. The asking price is at or below market for this mileage.
Red flags
- Internal Water Pump
this 3.5L engine places the pump inside the engine and a leak can contaminate the oil
- PTU Fluid Overheating
the AWD transfer unit runs hot and neglected fluid leads to bearing and seal damage
- Transmission Shift Quality
harsh shifts or torque-converter shudder become more likely at this mileage
- Timing Chain Noise
chain or phaser rattle on startup needs to be separated from normal brief startup noise
Green flags
- Limited Equipment
heated and ventilated seats, 3rd-row seating, and the Sony audio system add useful factory equipment
- Cosmetic Damage Disclosed
the seller identifies the rear bumper dent and scratch instead of presenting it as hidden damage
Out of 100 against a typical car its age. Tap an area for why.
What’s costing this car points
Fixing these, or marking them done, raises the score.
- Internal Water Pump LeakageUsually shows up around 120k mi · $2,200 to $4,200 to fix−1.1
- VCT Phaser Startup RattleUsually shows up around 100k mi · $1,600 to $3,200 to fix−0.3
- 6-Speed Transmission Shift HarshnessUsually shows up around 110k mi · $300 to $4,800 to fix−0.2
- 7 smaller items−0.3
When this car gets expensive
The chance of a major repair as the miles add up. This one is at 128k, right where the climb starts.
Deal Score weighs the asking price against comparable listings, the title, and the repairs documented in this guide.
- Price 5% below market
- Weak reliability (3.6/10)
Detailed findings, 10 items
Click any card for the full breakdown, repair cost, and what to check. Items already handled by the owner show as checked.
Reflects the open findings; items the owner handled are excluded.
Confirm these before you buy. If you or a mechanic can verify them, that clears the car instead of ruling it out.
Internal Water Pump Leakage
The internal water pump develops a coolant leak into the engine valley or crankcase, showing as falling coolant, oil contamination, or a cooling-system warning. The pump is chain-driven inside the 3.5L engine, so continued leakage can damage bearings and require major teardown work.
Costly repairs, but not urgent to verify before you buy. Price them out and use them to negotiate.
PTU Bearing And Seal Wear
The AWD power transfer unit develops overheated fluid, bearing noise, or a seal leak, heard as a whine or growl from underneath and seen as dark fluid around the unit. Heat degrades the small fluid supply, and continued operation after bearing damage can disable the AWD system.
6-Speed Transmission Shift Harshness
The 6-speed automatic develops harsh upshifts, delayed engagement, or torque-converter shudder, felt as a bump or vibration during light acceleration. Fluid breakdown and valve-body or converter wear change hydraulic pressure and become more noticeable after extended service use.
Timing Chain Stretch And Rattle
The timing chain develops slack and rattles during a cold start, with the noise coming from the front of the 3.5L engine before oil pressure builds. Continued chain wear alters valve timing and increases the chance of poor running or internal engine contact.
VCT Phaser Startup Rattle
The variable camshaft timing (VCT) phasers rattle on startup as their internal locking mechanism and oil control wear, producing a brief metallic sound from the top front of the engine. The noise reflects camshaft-control wear and often appears alongside timing-chain tensioner problems.
Front Suspension Bushing Wear
The front suspension control-arm bushings wear and crack, producing clunks over bumps and vague steering during braking or lane changes. The rubber loses its ability to hold the arm accurately, which increases tire wear and reduces straight-line stability.
AWD Wheel Bearing Hum
The AWD wheel hubs develop bearing wear that produces a steady hum or growl increasing with road speed, often changing when the vehicle is gently loaded left or right. The bearing surface deteriorates inside the sealed hub and eventually creates play at the wheel.
Minor wear typical for the car’s age. Not worth negotiating over, but good to track as an owner.
Outer CV Boot Tears
The front outer constant-velocity (CV) boots split and spray grease around the inside of the wheel, followed by clicking during tight low-speed turns. Once dirt enters the joint, the axle develops play and requires replacement rather than a simple boot service.
Rear A/C Evaporator Leak
The rear air conditioning evaporator develops a refrigerant leak, leaving the rear vents warm while the front system continues cooling or requiring repeated recharging. The evaporator is buried in the rear HVAC housing, making access substantially harder than a front-system repair.
Rear Bumper Dent And Scratch
The rear bumper has a disclosed minor dent and scratch, visible on the exterior finish. This is cosmetic damage only and does not affect the Explorer's operation.
Every finding still open carries a question worth asking. Copy them as one message, already ordered by severity. Anything you have marked above drops off on its own.
Price & negotiation
BetaBased on comparable listings and the repairs you can document. A starting point for what this car should cost.
Price breakdown
What it costs, and when
Verify now
Critical and major items to confirm first.
Possible year-one expense
Caution items with repair-cost context.
Watch later
Lower-confidence or no-cost items to monitor.
Each range is what that one item costs if it turns out to be present. Not every item will apply to this car, so they do not add up to a bill. Verify with a mechanic.
Asking is $12,799 against a typical $13,500 for this car and mileage. The work is the difference, not the sticker.
Negotiate your offer
Asking is about 5% below the market estimate, so there may be less room to move. The documented repairs below are still relevant to raise.
- Documented critical/major repairs of $7,000–$20,750 you can point to.
- Strongest items to raise first: Internal Water Pump Leakage, Timing Chain Stretch And Rattle.
Pricing is in beta. The market estimate comes from research models and can be off by thousands on the same car, so check recent local listings before you rely on it. This is information to help you research, not a professional inspection, an appraisal, or financial advice.
Recalls & safety
NHTSA crash-test ratings and recall data for this make, model, and year. Check recall status with your VIN before buying.
In-person inspection
10 things to check before you buy
6 major and 3 caution findings, turned into a walkthrough for the driveway. Try it on this sample.
Before you leave: Ask the seller not to start or move the car before you arrive. A sales-ready car has usually been warmed up, and a warm engine hides the startup smoke, rattles and rough idle that the first section is built around.
01Cold Start CheckFirst2
Start the engine cold while you watch the exhaust and listen. Note how quickly it catches, the tint of any smoke, rattles in the first few seconds, and how smoothly it settles into idle. This is the one test you cannot repeat on the spot.
02Exterior Walk-around1
Look at the ground under the car before anything else, and separate fresh wet marks from old stains. Then walk the body in daylight: panel gaps and paint texture for past repairs, glass, lights, tire age, and the wheel arches and rockers for rust or filler. Push each corner down; it should rebound once and settle.
03Underneath3
Get low with the flashlight while everything is still cool. Look for drips and oily residue, feel inside the tailpipe for black greasy soot, and check the rubber CV boots at the ends of the axles for splits throwing grease. Kinks in the frame rails, fresh weld marks, and new undercoating on an old car all point at repaired collision damage.
04Interior & Electronics1
Turn the key to accessory and then on, before starting. Confirm every warning light comes on and then clears, and test the windows, locks, climate fan, infotainment, and seats while the engine is off. Smell for damp, lift the mats to feel for wet carpet, and compare pedal rubber wear against the odometer.
05Engine & Systems1
Before the first start: pull the oil dipstick and look for a milky film, check the coolant for oil or rust, squeeze the radiator hoses for hard or mushy spots, and note the battery date. Once warm: confirm the cooling fans cycle, listen for belt noise, look for fresh seepage that was not there cold, and check that the A/C blows cold.
06Test Drive2
Drive a route with stops, a hill, and some open road. Feel for shift quality, clutch or torque-converter behaviour, brakes that pull or pulse, steering play, and any noise that changes with speed or steering angle.
Everything on this list is what you can see standing next to the car. A shop on a lift sees the rest, and a written pre-purchase inspection listing parts and labor is what a seller has to answer to. Budget roughly $100 to $150 at an ASE-certified shop.
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