really awful
Crashes / Fires:
1 / 1
Injuries / Deaths:
0 / 0
Average Mileage:
65,976 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2004 Mercury Mountaineer engine problems

engine problem

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2004 Mercury Mountaineer Owner Comments

problem #7

Jan 042014


  • 201,000 miles


04 Mountaineer cluster gauge blacks out then meter gauge flickers. Waited for 10 min I'm parking lot then it comes on. Started to drive then about a mile into driving it shuts down. Mind you my SUV was still going but gauges shut down then my lights go off, then my windshield wipers go. By the grace of got I got home. While on road my engine was struggling. Help before that incident I had just replace thermostat housing because it cracked and I was loosing coolant.

- Southington, CT, USA

problem #6

Mar 012011


  • 93,000 miles
Shut off while driving lost power steering etc.

- Wethersfield, CT, USA

problem #5

May 242010


  • 70,000 miles
I have a used 2004 Mercury Mountaineer I purchased in 12/2008 it had 53,000 miles. I have done all of the required maintenance oil changes, brake pads, fluid changes, and 60,000-mile service package. I have nothing but problems with the vehicle. The failures I have are as follows: 1. front/rear brake pads, front/rear rotors, spark plugs, -defected parts 2. battery 3. tires-constant flats 4. lug torque-driver front/rear 5. hood shocks, tire pressure sensor light 6. transmission fluid leak/ front pump seal leak 7. noise at harmonic balancer 8. roar noise and shakes at all speeds 9. hub assemblies making noise front left/right side; unless replaced vehicle unsafe to drive per Ford dealership 10. Brake pads- front/rear need to be replaced going bad (second time needing to be replaced) 11. Needs front alignment-pulls to the right side 12. Fuel filter 13. Needs all new tires 14. Ignition coil -defective needs to be replaced 15. Vehicle gear shifter is stuck while driving won't shift at all sometimes stays stuck at certain speed won't move 16.universal joints 17. Axle housing gasket repairs and corrections done on vehicle: 1.new brake pads on front/rear, replaced spark plugs, resurfaced front/rear rotors.- 8/2009 2.battery replaced- 4/2010 3.tires-flats repaired/patched -8/2010,11/2010,2/2011 4.have not repaired/replaced 5.have not repaired/replaced 6.replaced seal, transmission filter and fluid changed, replaced seal-oil-6/2011 7.have not repaired/replaced 8. vehicle is shaking and loud roar noise hasn't been fixed-6/2011 9.hub assemblies front left/right side replaced -6/2011 10.have not replaced/repaired 11.have not replaced/repaired 12.fuel filter replaced-6/2011 13. Bought brand new set of tires -6/2011 14.ignition coil replaced-10/2009 15. Have not repaired/replaced 16. Have not repaired/replaced 17. Axle housing gasket replaced-04/2011.

- The Woodlands, TX, USA

problem #4

Feb 152011


  • 46,845 miles


The contact owns a 2004 Mercury Mountaineer. While having the vehicle serviced for routine maintenance at an authorized dealer the contact could smell a burning odor. The contact was told the engine manifold was cracked and leaking. The vehicle was repaired. A few days later the vehicle began shaking while stopped. The vehicle was taken back to an authorize dealer where the contact was told the engine coils and spark plugs needed to be replaced. The vehicle was repaired. The failure and current mileages were 46,845. Updated 03/24/11 updated 1/4/11

- Hollywood, FL, USA

problem #3

Aug 292008


  • 30,987 miles
On August 29, 2008, at about 9:30 P.M., I was going home from a vacation. I was going 55 miles per hour and the vehicle power completely stopped. I was able to get off the freeway safely and after several attempts the vehicle started up again. This was very frightening because we try our best to maintain the vehicle to its optimal I.e. oil, tires. This needs to be investigated further by this Agency as soon as possible. Thank you

- Montebello, CA, USA

problem #2

Sep 022004

Mountaineer 6-cyl

  • Automatic transmission
  • 15,000 miles
The consumer stated during braking the vehicle stalls. When the cvonsumer went to restart and put it in drive it stalled again. Took vehicle to the service department 3 times. The second time they replaced the fuel pump, the first time they updated the engine controller software. For the 4th time total loss of vehicle power when braking from 55 mph. Dealer replaced maf sensor. Driver rear door molding catching front door molding at times when opening.

- Milford, MI, USA

problem #1

Jul 302004


  • Automatic transmission
  • 5,000 miles
While driving there was a very loud noise from the front of the vehicle. Consumer pulled off the road, and called road side assistant. Vehicle was towed to the dealer, who performed an oil change because of mileage at the time of the incident. Noise recurred the following day. Vehicle was taken back to the dealership, who indicated that the driveshaft was defective, and needed to be replaced. Vehicle is currently at the dealership being inspected.

- West Chester, PA, USA

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