Mercury Mountaineer overheating problems

Filed Sep 29, 2014 · Engine · ID

2006 mercury mountaineer. Consumer writes in regards to failure of the water manifold housing. *smd the consumer stated he was driving 70 MPH, when the engine light illuminated. The vehicle began to overheat and steam was coming from under the hood. The water manifold housing had come apart, allowing water to boil out. The housing was plastic and made of two parts. The top and bottom were glued together and within the total circumference of about 18 inches, there were only three bolts between the top and bottom housings to secure the two parts together, except the glue. The consumer believed the construction was not enough to keep them from separating under pressure. It appeared, the design created a tendency for the top plate to pull away from the lower housing. The consumer attempted to install a new housing, but he discovered the engine was misfiring, so the vehicle had to be towed to the dealer, where the long block assembly was replaced.

Filed Sep 15, 2014 · Acceleration, Fuel system · 97,300 miles · MD

On the baltimore-washington parkway (295 n ) northbound, changed lanes to the left and accelerated. The gas peddle was pushed to the floor, stayed there and would not release. I stood on the brakes, but only somewhat slowied the acceleration. The vehicle continued until we reached about 80mph and coming close to rear ending the vehicle in front of me. I went off on the shoulder and turned off the ignition key to get the vehicle stopped. The brake overheated brakes. I could not see a problem. This was not caused by a floor mat. The pedal was stuck to the floor. I wiggled and pulled and it come back up with a pop. In daylight the next day, I inspected the pedal and pushed it down. It again went to the floor and stayed there. I slid under the dash and found that the horizontal pin that holds the pedal to the floor bracket had backed out sideways from right to left, allowing the pedal to go somewhat sideways and the motor for the adjustable pedal assembly had caught on a metal bracket keeping the pedal from returning to the up position. I removed the pedal assembly and inspected the problem. This is poor engineering and there should be a recall.. There are no clips or pins to hold the pedal pin in place ! ! ! The assembly relies on slight interference between splines on the pin and splines inside where it goes through the pedal. What happened was, that over a period of time, from the pedal wiggling, the pin backed out.from use, on its own. Again, this not sufficient to keep the pedal assembled. It need clips on both ends or cotter pins on both ends of the pin assembly. A concern is the use of plastic bracket to mount the pedal to the floor. In my past experience, the mounting brackets had been made of metal. Plastic fatigues faster than metal and is prone to cracking and breaking.

Filed Apr 1, 2014 · Engine · 90,000 miles · DE

Tl* the contact owns a 2007 mercury mountaineer. The contact stated while driving 40 MPH the vehicle stalled without warning. The vehicle was towed to the dealer for inspection and they stated that the engine overheated and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 90,000. The VIN was unavailable.

Filed Aug 28, 2012 · Engine, Steering · 60,000 miles · MD

I was driving on the highway and noticed that my steering was not working well. My engine was overheating and eventually shut off. I had to pull over on the side of the highway. When I got someone to look at the car, we realized it had no coolant. We filled up the coolant and everything seemed fine. About a month later I noticed that the engine was making the same noise as it had before as if it were working too hard. I checked the coolant and it was completely empty again. I have a friend who also owns the mm and had the same problem. The repair and cost of a new radiator was 1500. Ford/merucy needs to do a recall on this product and get it taken care of. I just purchased this car in january and should not have to be spending so much money on a repair.

Filed Oct 4, 2011 · Engine, Transmission · 53,000 miles · CA

Tl* the contact owns a 2006 mercury mountaineer. The contact stated that while driving approximately 50 MPH, the radiator started to overheat. The driver was able to continue driving and added water to the radiator. The vehicle was not inspected by a dealer nor repaired. The manufacturer was contacted and they advised him that the failure was caused by normal wear and tear. In addition, he noticed that when shifting from park to reverse, the vehicle would hesitate and jerk violently into the correct gear. The failure mileage was approximately 53,000. The VIN was unavailable.

Filed Apr 4, 2011 · Engine · 92,213 miles · CA

New showroom 2002 mercury mountaineer. The engine in this vehicle malfunctioned twice without warning; no overheating, no dashboard light indicators either time. July 2004/odometer reading 92213, the mechanics at the freeway lincoln mercury were baffled. They advised me that all the fluids were in the vehicle. Later (one week) they found a "hole" in the radiator. I was told I had a new engine, with a new warranty. 2nd time was june 06, odometer 166199,(new engine 73986) no warning, no dashboard lights, no overheating. Per a different certified mechanic not only was the engine not new but it had severe corrosion in it and showed signs of multiple overheating conditions. They told me of an "all technical service bulletin" dated 1/21/02 for my vehicle's engine regarding the "engine head gasket"---"some engine assemblies with aluminum cylinder heads repaired in-vehicle have been found to leak coolant and/or oil from the cylinder head gasket area due to particle contamination or scratches and dents to block mating surfaces." action: refer to the following service information for recommended gasket sealing surface preparation procedures. If the engine diagnosis points to a faulty head gasket (leaks oil, leaks coolant, oil or coolant contamination, or air in coolant), thorough cleaning procedures are necessary for a successful head gasket repair. Diagnosis and post- repair confirmation can be done successfully utilizing leak detection methods such as a black light dye process. Service procedure:to sum up, a successful leak repair depends on:accurate diagnosis of the leak using ford-recommended test equipment and procedures .surface preparation and gasket installation using the approved tools, cleaners, and methods.exercising care and cleanliness during disassembly/assembly of components use of genuine ford oem replacement parts<use of a ford remanufacturer

Filed Jan 3, 2011 · Engine · 96,000 miles · IL

Tl* the contact owns a 2006 mercury mountaineer. The contact stated that the radiator continued to leak coolant. The contact stated that the radiator was previously replaced twice for the exact same failure. The leaking had not caused the vehicle to overheat but the contact stated that the coolant odor was overwhelming from the vehicle interior. The contact called the manufacturer and they stated that the vehicle was out of warranty and there were no recalls so they were unable to assist. The failure mileage was 96,000.

Filed Jul 16, 2010 · Engine · 50,000 miles · SC

Tl* the contact owns a 2006 mercury mountaineer. While driving approximately 40 MPH, the contact noticed the temperature gauge displayed a "high temperature" reading. The vehicle was pulled over to the side of the road and the engine was turned off. The engine overheated with excessive leakage of coolant. The contact dispensed coolant into the radiator reservoir. The vehicle was able to continue for approximately ten miles before the identical failures recurred in which the radiator required additional coolant. The failures occurred whenever the vehicle was in operation. The authorized dealer was notified of the malfunctions and they informed that there was a technical service bulletin regarding the engine and engine cooling: cooling system: radiator assembly. The bulletin number was 0638. The vehicle was not being driven at the time of the complaint due to the potential safety hazard. The failure mileage was 50,000.

Filed Aug 20, 2009 · Airbags, Seat belts · 59,000 miles · IN

2002 mercury mountaineer v8 awd 4.6 transmission failure. Vehicle had under 60,000 miles, but had surpassed extended warranty time frame. Reverse vehicle would not move. Shifted very hard through gears. Sometimes tacking at 3000 RPM. Took to a transmission specialist. Repaired at a cost of 2600.00. Have since returned vehicle to same place for same issues plus transmission overheat light and leaking transmission fluid. Seat belts locked down for no reason. Would not retract. Called dealer, could not do anything because I was over restraint warranty by 3000 miles. Have replaced all 4 seat belt restraints. Front air bag light stays on or blinks, or is off. Called dealer, stated repair would not be covered due to mileage. I purchased this vehicle brand new june 2002. Today it has 65,00 miles on it. Is driven primarily on the highway for vacations. Have had several small repairs that were covered under extended warranty. I am very disappointed in the performance of this vehicles drive train and safety restraint system to include seat belts and air bag issues. With as many complaints I see on line about the transmission and front air bag issues, seems to me something should be done to help those of us that purchased in good faith what should have been a great vehicle. I have been a ford/ mercury owner since 1971. This is the first vehicle I have had that had major issues.

Filed Mar 11, 2002 · Body, Seats · MO · 1 injury

The front floorboard overheated. The front seats became warm as if a seat heater was turned on. The vehicle has none. The front tires began making a whomping sound as if flat. I pulled over checked the tire pressure. It was normal. I continued to my destination. The ABS light and airbag light then began to flash. I continued to drive. Upon reaching my destination, I reached under the passenger side seat to get the keys I dropped. I accidently bumped the seat bracket with my left tall finger blistering it.