2005 Mercury Mountaineer engine problems

Filed Aug 10, 2022 · Acceleration, Engine · PA

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 my speed as the transmission was slipping and not go fast then my O/D over drive went on flashing a light ,while the engine kept steady at 20-30 miles per hour while accelerating increasing no speed ,now my SUV will not run wright, it will kick into gear at times constantly and cause problems driving safely ,this is a common problem I'm hearing and reading in the internet with the ford/ mercury mountaineer the manufactory does not want to accept responsibility with this problem ..... this is clear a RECALL ISSUE that needs to be addressed before someone gets killed on the highway by getting rammed by a semi-truck which it almost happened to me !!!! a multi-million dollar law suit is in order if they do not acknowledge and fix this problem

Filed Dec 21, 2016 · Engine · 90,000 miles · TX

On two occasions the engine cut out while driving the car, all the engine warning lights came on. Once the car was safely off the road and placed in park it would start and continue to operate. The ford dealer said that there was not fault code in the computer, they could not duplicate the failure and could not find any fault in the engine system. Ford service representatives said I should go a different ford dealer and see if they could solve the problem. I find similar engine failures documented on the internet for this generation of car. More current similar model are not reported to have this problem. Thus I assume ford found and fixed this problem. I asked them to tell me how they solved the problem, they said that was not possible. So, I have an otherwise good car which I can do use nor in good conscience sell to someone else. Please help!

Filed Oct 10, 2015 · Brakes, Engine · 128,000 miles · PA

While driving 50 MPH vehicle stalled three times. Took it to a garage, was told it was necessary to have the vehicle when it stalled. Found eleven (11) similar complaints on your site! Perhaps there is some validity to the complaints. All parts of the vehicle related to safe driving were rendered useless. Sounds like a safety issue to me!

Filed Jul 27, 2015 · Engine · 41,000 miles · NY

My transmission went only after 1 year of having car, spend ofver $3,000 for a new transmission and now the transmission is going again. This is unacceptable. I don't even drive that much.

Filed Jun 26, 2015 · Engine · 126,000 miles · PA

Tl* the contact owns a 2005 mercury mountaineer. While driving at approximately 50 MPH, the engine stalled without warning. The contact was able to restart the vehicle. The failure recurred. The vehicle was not diagnosed or repaired. The manufacturer was not made aware of the failure. The approximate failure mileage was 126,000. The VIN was not available. ...updated 07/30/15

Filed Oct 21, 2014 · Engine · 141,000 miles · MO

As I was driving the vehicle just died; all the warning lights came on and as I was losing speed I pulled over to curb the best I could. Restarted car and it seemed to run fine but happened again 20 minutes later. This has also happened 2 other times within the last 10,000 miles of driving.

Filed Jul 9, 2014 · Acceleration, Engine · 105,000 miles · WA

The engine has shut off twice while driving using cruise control. The first time I was able to get to the side of road and restart it.. The second time I put it in neutral and restarted it while moving. I am afraid to use the cruise control now - if there had been oncoming traffic we would've had a head-on collision as I was on a corner and went into the other lane. When the engine shuts off, the power steering is gone leaving it very difficult to turn.

Filed Jul 18, 2010 · Engine · 73,000 miles · MA

My mountaineer stalls without warning while going about 35 MPH but after a few minutes can restart. It has done this 4 times over the last 3 or so months. In addition twice it would not start (it had been about 30 minutes since I drove it) and it had to be jumped. I replaced the battery thinking that was the problem but it persists. I brought it to a regular garage once, who kept it for a day and found nothing wrong. I then brought it to a mercury dealer who kept it for 2 days but found no codes or problems. It just stalled again two nights ago while I was driving 35 MPH without and restarted a few minutes later. The dealer had it for a day but again found no codes or problems. So far I just put in a new battery and they changed the oil and filter.

Filed Jun 21, 2009 · Engine, Fuel system · 35,000 miles · TX

Without warning of any kind the engine quits under 35 MPH, sometimes with cruise control on. After car rolls to a stop, it can restart right away. Loss of power steering and brakes. Dealer says no codes to back up complaint. This has as happened at least 3x spread over 35,000 odometer miles.

Filed Jun 17, 2008 · Acceleration, Electrical · 34,177 miles · PA

Tl*the contact owns a 2005 mercury mountaineer. On the day the vehicle was purchased, the contact noticed fluid leaking onto her garage floor. She returned to the dealer and was informed that the pinion seal needed to be replaced, and repairs were made. While traveling 45 MPH, the contact attempted to set the cruise control and the vehicle shut off in the middle of the road. She was able to pull over to the shoulder and restart the vehicle to drive home. After work one evening, she was unable to start the vehicle. After 20 minutes, her father arrived and was able to forcefully start the vehicle. The contact returned to the dealer the following day, but they could not duplicate the failure with the cruise control or the stalling. On june 16, 2008, she took the vehicle to the dealer and they replaced a fuse. Upon further inspection, they identified a bushing that needed to be replaced as well. All of these failures occurred within four months of purchasing the vehicle and with less then 4,000 miles placed on the vehicle by the contact. The failure mileage was 34,177 and current mileage was 37,600. Updated 07/15/08 *bf when the consumer started the vehicle, the power seats and power locks failed to work. The consumer returned to the dealer and they replaced the driver side motor. The sway bar bushings were replaced. Updated 07/15/08