2004 Mercury Mountaineer Mercury Mountaineer 2004

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2004 Mercury Mountaineer repairs by problem area

Engine (27%)

Transmission and Drivetrain (16%)

Brakes and Traction Control (2%)

Suspension and Steering (30%)

Electrical and Air Conditioning (16%)

Paint, Rust, Leaks, Rattles, and Trim (2%)

Other (7%)

Chart based on 44 repairs.
See TSBs and recalls for the 2004 Mercury Mountaineer.

2004 Mercury Mountaineer engine repair cost distribution

$2500+ (0%)

$1000 - $2499 (0%)

$500 - $999 (17%)

$100 - $499 (50%)

< $100 (33%)

Worried about potential repair costs? An extended warranty can provide peace of mind.

Chart based on 12 repair trips. The repair cost chart excludes repairs made under warranty, do-it-yourself repairs, and repair trips that include maintenance.

2004 Mercury Mountaineer 4dr SUV

239-horsepower 4.6L V8 5-speed automatic RWD

66000 mi

US $20
CEL came on 2 days after I bought the truck-dang!. Autozone diagnosed code as low coolant temp. I bought a thermostat and gallon of antifreeze at my local mom & pop parts store and replaced the thermostat in under an hour in my garage. 
135000 mi EGR pressure code. Check engine light. Not effecting vehicle performance. 

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2004 Mercury Mountaineer 4dr SUV

239-horsepower 4.6L V8 5-speed automatic AWD

157300 mi

US $350
Both Idler Pulleys need to be replaced. Bearings were shot. 
181300 mi

US $210
Engine would skip on cylinder #8. Spark plug & coil was replaced. Engine oil filter adaptor was leaking oil through the gasket. The gasket was replace & oil change performed. 
204000 mi

US $265
Replaced muffler and tailpipe 
204000 mi

US $50
Oil Filter adaptor developed another leak. I went to a new repair shop to have the gasket replaced. 

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2004 Mercury Mountaineer 4dr SUV

210-horsepower 4.0L V6 5-speed automatic AWD

96000 mi

US $1100
Cracked flywheel replaced 
77000 mi

US $175
Rusted exhaust flange, replaced with new split clamp 
91600 mi

US $550
Car was idling rough and stalling at stops. CE light on. Fuel Pressure sensor failed, promptly diagnosed and replaced. Part had to be ordered through Ford dealer, no aftermarket part.  
128000 mi

US $420
Won't start. Got full tuneup (plugs and wires) and changed fuel filter 
134000 mi

US $180
Mass air flow sensor failed 

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See TrueDelta's information for all SUVs
See TrueDelta's information for all Mercury models.

2004 Mercury Mountaineer Engine Problems

See our lemon odds and nada odds page to see vehicles with no repairs or vehicles with more than three repairs. To see how frequently 2004 Mercury Mountaineer problems occur, check out our car reliability stats.