2005 Mercury Mountaineer power train problems
19 owner complaints filed with NHTSA name the power train on the 2005 Mercury Mountaineer — 23% of all complaints for this model year.
What owners report
“The truck bearing keep going out the spark plugs overloaded and I can’t accelerate at times when I’m driving it slows down then starts back up”
filed Aug 3, 2023
“The Transmission won't shift into 3rd and 4th gear, hitting hard into gears at starting, slipping begins after 35 mph..replaced torque converter.”
filed Feb 2, 2023
“started losing power ,did not want to go pas 30 miles per hr ,then it ramed up and came to a stop with no acceleration ,i shut it off then start it again and was able to get home at a low rate of speed while continuing to have these problems, another day while far away from home the engine rammed up again minimizing…”
filed Aug 10, 2022
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Related service bulletins
Ford: some vehicles may exhibit oil separation from the internal lube found in the unitized cartridge seal. Oil separation appears to be and is often misdiagnosed, as an axle lube leak. *pe
TSB-08-19-3 · Service Bulletin/Repair Instructions · issued May 1, 2009
Power Train problems in other Mountaineer years
| Year | Reports | Share |
|---|---|---|
| 2008 Mountaineer | 9 | 9% |
| 2007 Mountaineer | 25 | 31% |
| 2006 Mountaineer | 39 | 33% |
| 2004 Mountaineer | 64 | 30% |
| 2003 Mountaineer | 42 | 28% |
| 2002 Mountaineer | 144 | 39% |
| 2001 Mountaineer | 1 | 5% |
| 2000 Mountaineer | 15 | 12% |
| 1999 Mountaineer | 8 | 5% |
| 1998 Mountaineer | 9 | 4% |
| 1997 Mountaineer | 8 | 2% |
Other reported problem areas on the 2005 Mercury Mountaineer
Counts are unique NHTSA complaints naming this component group. Complaints are unverified owner reports; mileage is computed only from complaints that included a usable odometer reading.