2008 Mercury Mountaineer: engine stalls while driving

Filed Sep 3, 2025 · Engine, Fuel system · 200,000 miles · AZ

The contact owns a 2008 Mercury Mountaineer. The contact stated that the check engine warning light was illuminated. The contact stated the vehicle stalled while driving at an undisclosed speed. The contact stated that several attempts were needed to restart the vehicle to continue driving. The contact stated that the gear shifter intermittently failed to move to the intended position. The contact stated that there was an abnormal fuel odor inside the cabin of the vehicle, and the fuel level was lowered sooner than normal. The vehicle was taken to the dealer to be diagnosed; however, the result was not provided. The contact stated that there was a code for an EVAP failure. The vehicle was not repaired. The vehicle was taken to another dealer, Peoria Ford (9130 W Bell Rd, Peoria, AZ 85382) however, the contact was not provided the cause for the failure. The vehicle was taken to an independent mechanic; however, the vehicle was not repaired. The manufacturer was not informed of the failure. The failure mileage was approximately 200,000.

Filed Feb 29, 2016 · Electrical, Seats · 80,000 miles · MN

Defective ignition. When driving, if you bump the key (or attached keychain), all interior lights will come on, and the drivers seat will retract all the way back into the "easy entry/exit" position, making it impossible for a shorter person to reach the brake or gas pedal. Sometimes during this event, the car will stall. This is very dangerous, and the internet is full of people having this identical issue. Why hasn't this been recalled yet?!? People are paying for a new ignition tumbler, but before long it starts happening to the replacement tumbler as well. Http://www.carcomplaints.com/mercury/mountaineer/2008/accessories-interior/seats.shtml

Filed Feb 17, 2015 · Engine · 24,000 miles · TX

**************************engine will shutoff without warning********************** it has happened with various levels of gas, various weather conditions, and both while stopped and moving. The "check fuel filler inlet" light will come on. Sometimes, the check engine light will remain on, but will clear within the next startup or two. Car has been at dealers at least 4 times for issue. Engine throttle body and crankshaft sensors have been replaced. In the beginning, the vehicle would do this once or twice, then run perfectly for months at a time. Each time it is "fixed" by dealer, who claims they cannot replicate the problem. Lately it will stall 4-6 times within a 30 minute period. Last month, I was able to read code 2107. Today, it stalled again 6 times, no check engine light remains, no code to be read. When car is running normally, it sometimes hiccups and seems to run rough.

Filed Feb 25, 2014 · Electrical, Lights · CO

If I hit a bump or pothole while driving, the driver's seat moves to the easy exit position the dome lights come on. Happens also if you bump the steering wheel or if you touch the key when it is in the ignition. It has happens while backing out in drive. Stalled the engine twice. Turning the key slightly will put the seat back into the set position. I am only 5' 5", so when the seat goes back while I am driving, I am moved too far away from the steering wheel and the brake and gas pedals. Mechanic inspection indicates it is a problem with the ignition switch and has quoted it as a $203 repair.

Filed Dec 14, 2010 · Engine · MO

Tl* the contact owns a 2008 mercury mountaineer. The contact stated that while driving approximately 75 MPH, the vehicle would stall and the wrench warning light would illuminate. The vehicle was able to be restarted after a several attempts. The failure would occur on an intermittent basis. The vehicle was inspected by a dealer and they were unable to diagnose the failure. The vehicle was not repaired. The failure mileage was unknown. Updated 06/24/11