Huge win for car owners! All TSBs to be made public. The Center for Auto Safety just made the NHTSA (US Government) make public the full text of all TSBs from now on. They are the same organization that has petitioned the NHTSA & filed lawsuits to protect car owners over exploding gas tanks & other major safety issues. Whenever you drive in your car, you are safer thanks in part to a lot of work over the years by this small but very effective consumer advocacy group.

Please take a moment & say thank you by donating $5 or whatever you can to the Center for Auto Safety.


really awful
Typical Repair Cost:
Average Mileage:
110,000 miles
Total Complaints:
2 complaints

Most Common Solutions:

  1. not sure (1 reports)
  2. replace whole differential (1 reports)
2002 Mercury Mountaineer drivetrain problems

drivetrain problem

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2002 Mercury Mountaineer Owner Comments

problem #2

Jun 022014

Mountaineer 5.7L

  • Automatic transmission
  • 140,000 miles


Tears up the tires. Hops and jumps sliding the tires when turning. I am a non traditional student, I can't just buy a new car.

- , Iowa City, IA, USA

problem #1

May 242007

(reported on)

Mountaineer 4.0L V6

  • Automatic transmission
  • 80,000 miles

So I'm sure you've seen the TSB about the clutchpack for the rear diff. Mine suffered a catastrophic failure with little to no warning before fully locking my rear axle solid, ie. left and right wheels have to turn at the same speed - turning is very difficult. The dealer recommended a rebuild, I chose to fully replace the diff - the cost difference was very small... then the axle seals started leaking on the new diff. Replaced twice, still leak... there's 2 complaints about those too!

- , Clifton, VA, USA

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