2004 Mercury Mountaineer acceleration problems

Filed Jul 6, 2015 · Acceleration · 89,600 miles · MI

Engine died has repeated only a few times at or above 50mph over span of time

Filed Oct 2, 2014 · Acceleration, Steering · 78,000 miles · NC

I had picked up my kids from daycare and I put my vehicle in reverse and backed up. While backing up I heard a loud pop and I got out to see but there was nothing visible. So I put the vehicle in drive and as I was going down the street my vehicle axle broke and my truck hit the street in the middle of traffic. I took it to the ford dealership and they said it was my axle and my differential had broken also, am I am lucky that I didn't have a bad accident with the extend of the damage of the differential. After I fixed that and it cost $2900. That still did not fix the problem and I had to replace the transfer case. Then all three of my cadillac converters had to be replaced. I have had problem after problem and oh yeah the back rear gate has been cracked like the month after I bought it.

Filed Aug 17, 2014 · Acceleration, Engine · 99,000 miles · TN

Using cruise control going down a slight grade the engine died. This has happened multiple times in the last few months, so now I know to put the vehicle in netural while still moving and re-start the engine, then pull back down into drive. This isn't easy to do, so be careful not to put in reverse or park while trying to re-start the engine.

Filed Jul 21, 2014 · Acceleration · PA

This is not the first time this has happened! We were driving when my husband set the cruise control and it stalled our vehicle! He set it for 45 MPH and it just shut the car down! This is not the first time this has happened we set it for 35 MPH and it stalled the vehicle we notified the company we got the car from and they told us there was nothing wrong with it when they drove it and set the cruise control! We told them that it happened several times! And I refuse to pay for something now that my car is no longer under warranty when the place I got the SUV from was aware of the issue, I seen that there were a lot of other complaints about this happening, what is mercury waiting for? Someone to get killed!!

Filed Apr 30, 2014 · Acceleration · 138,800 miles · NY

Tl* the contact owns a 2004 mercury mountaineer. The contact stated that while traveling 45 MPH with the cruise control activated the vehicle stalled without warning. The vehicle was taken to a private mechanic where it was found that the cruise control switch needed to be replaced. The vehicle was not repaired. The manufacturer was contacted abut the failure. The failure and current mileage was 138,800. Updated 06/17/14*lj updated 8/25/2017

Filed Jan 19, 2013 · Acceleration, Electrical · 130,629 miles · MD

Engine stalls when activating cruise control which results in hazardous driving situation due to loss of power steering and brakes. Have to pull over to side of road, put the vehicle in park and restart. Starts every time. Has repeated 3 times. This is a serious flaw in the ford electrical computer design to result a failure mode that stalls the vehicle engine while under speed.

Filed Aug 24, 2012 · Acceleration, Electrical · 80,000 miles · VT

Tl* the contact owns a 2004 mercury mountaineer. While driving approximately 65 MPH, the contact deactivated the cruise control when the vehicle suddenly stalled. The failure also recurred when driving at slower speeds or when decelerating with the cruise control activated. The vehicle was taken to an independent mechanic for diagnostic testing. The mechanic stated there was a recall and referred the contact to the manufacturer. The manufacturer was made aware of the failure and stated there was a manufacturer's voluntary recall issued but the contact's VIN was not included in the recall. The vehicle was not repaired. The approximate failure mileage was 80,000. Updated 9/21/12 *cn the consumer stated when the failure occurred, there was a total shutdown of the onboard computer, because the power steering and power brakes also failed. Recovery required getting the vehicle stopped on the shoulder and turning off the ignition. Updated 10/04/12

Filed Nov 29, 2010 · Acceleration, Electrical · 85,400 miles · MN

Just purchased a 2004 mercury mountaineer today. Driving home, using cruise/speed control at around 30mph and driving on a slight decline, the vehicle shut down. All indicator lights went on, and I had to coast to the side of the road. I put vehicle in park and restarted it without problem. There were no indicator lights (check-engine, etc.) lit up. Immediately went to local ford dealership and they had no clue, especially since the computer did not have any codes indicating a problem.. I'm canceling the check and returning the vehicle tomorrow.

Filed Aug 9, 2010 · Acceleration · 91,303 miles · PA

To ford motor company (fmc) via website: your inquiry: has any mechanic every came across a situation similar to my 2004 mountaineer cruise control problem as follows: every time I set the cruise control between 27-45mph and descend a hill, the engine shuts down! That's right; no power steering, no power brakes, no engine running! This is definitely a safety/warranty issue to me? The mercury service manager said that he never heard of such a problem and it's going to cost me at least $70.00, just for him to figure out what's wrong! From fmc: thank you for contacting the ford motor company customer relationship center regarding the cruise control concern on your 2004 mercury mountaineer. I sincerely understand the frustration that this experience has brought you. Please be advised that complete vehicle service records are maintained at the servicing dealership only. As dealerships are independently owned and operated, we do not have access to other vehicles' service records; thus, cannot determine if this is considered to be a common occurrence. Moreover, our dealers determine how the diagnostic fee will be applied when assigning technicians to service vehicles. In this instance, the $70 diagnostic fee that was quoted to you and the manner in which it would apply, is a standard practice for this dealership. I invite you to speak with the customer relations manager or the service manager, as he/she would be in the best position to address your diagnostic fee. At this time, I recommend that your vehicle be inspected by a lincoln-mercury dealership to determine the cause of any symptoms your vehicle may be experiencing. They have factory-trained technicians, the most current engineering service information, and the specialized equipment required to resolve your vehicle concerns. If there is no coverage under applicable warranties, recalls or extended service plans, repairs and services would be your responsibility. Make an appointment with fmc dealer.

Filed Jul 14, 2010 · Acceleration · GA · crash · 2 injuries

I drove a 2004 mercury mountaineer SUV and as I was turning into the apartment complex from a complete stop, the gas pedal clamped down & I couldn't get the brake to work. My SUV was totaled & I ran into a full-sized pick-up truck, which was totaled too. I reported the problem to the police & my insurance company. The insurance company told me not to tell anyone else about it. It was late evening, so no kids were out, but being unable to control my vehicle, which totaled two full-sized trucks is scary!