2005 Mercury Montego: sudden loss of power

Filed Jul 1, 2016 · Electrical, Engine · 147,000 miles · IL

Car runs great for about 20 minutes then I get a surge in the engine, dash cluster goes dead, car jerks and I lose power randomly. Everything comes back on but will go out multiple times getting worse everytime. I have lost power to transmission once, no forward or reverse. Replaced the dash cluster and car ran great for 2 days then started all again. This happens mainly while in the city, hasn't happened on highway yet thank goodness. Car just sits in driveway, afraid to drive it. I see countless people with this issue all the way back to when car was released and still no solution.

Filed Apr 16, 2016 · Fuel system, Steering · MI

My 2005 mercury montego shuts off while going down the road. I have paid around $4000 to try and have the problem fixed and it has never stopped. The reverse gear is unusable, as soon as you put it in reverse it shuts the car off. The transmission jerks and will not steadily accelerate at random times. The car will randomly shut off when going down the road losing all power steering and power braking ability. This is particularly a problem considering I have an infant in the backseat most every trip. I saw this lawsuit and every single thing listed about the CVT transmissions has happened and is still happening to my 2005 montego.

Filed Jan 30, 2014 · Acceleration, Engine · 80,310 miles · WI

As I was entering onto the highway instead of accelerating the car decelerated and was losing power and RPM's went way too high then it should of. The transmission is not acting properly.the car has a clunking sound when hitting bumps.

Filed Oct 4, 2013 · Electrical, Fuel system · 68,250 miles · MA

Vehicle was started first thing in morning and driven approximately 25' when the transmission seemed to disengage and warning lights came on. Car remained parked for about 30 minutes and a second attempt was made. The car was driven approximately 2 miles when once again the transmission failed to engage and a loss of power was experienced. Following these two incidents with the vehicle I arranged to have the vehicle flat bedded to the local ford dealership where it was determined that the problem was a defective throttle body assembly the vehicle has 68,250 original miles on odometer.

Filed Jun 29, 2011 · Acceleration · 86,000 miles · NC

Tl* the contact owns a 2005 mercury montego premier. The contact stated that the vehicle suddenly accelerated numerous times, would lose power and stall. The vehicle was taken to the dealer who performed a diagnostic which located the failure at the throttle body sensor. The throttle body sensor was not replaced. The manufacturer advised the contact that the failure was not recalled. The vehicle was not repaired. The failure mileage was 86,000 and the current mileage was 100,000.

Filed Apr 24, 2011 · Transmission · 179,453 miles · IL

Driving on the highway on february 10, 2011, started to pass a truck and noticed that I was losing power - I looked at the tachometer and noticed the RPM's increasing. I took my foot off the gas and got back into the right lane. As I got further down the interstate, I heard a loud, screaming noise, and I continued to lose power. I pulled onto the shoulder of the road as soon as it was safe (I was on an overpass). The car continued to run but it wouldn't go into gear. I had the car towed to a transmission shop where they checked and replaced the cv axel assembly and replaced the transmission fluid. In march 2011 I noticed the engine seemed to be misfiring so I took it to an auto repair shop where they said the plugs needed replaced and one motor mount was broken and needed replaced. I was leaving for vacation so they said it would be ok to drive to the airport and return and then bring back for repair. I took the car back on tuesday april 5, 2011. While checking the car out, they found the part replaced for the cv axel was once again broken, which they replaced. I picked up the car on friday april 8, 2011. I left the auto repair shop, drove approx 20 miles when I noticed the same problem starting. I returned to the auto repair shop and they said the cv axel problem was again occurring - the splines were broken. Car was taken to the transmission shop where it was found this time to have an internal transmission problem, said the cv axel assembly would be warranty, but it would be approx $4,000 to replace the transmission with a rebuilt one.

Filed Mar 23, 2011 · Electrical · 105,000 miles · IL

1) no prior events lead to this problem it just happened. 2)the instrument panel of my 2005 mercury montego lost all gauges, speedometer, lights,turn-signals. Then the car completely lost power. 3) the repair shop is still trying to determine the problem.