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Engine & cooling

Mercury Montego Engine problems by year

45 complaints filed with NHTSA about the Mercury Montego's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20073000
200624100
200517000
19751000
19720001

Engine recalls

Latest Montego engine complaints

2007 Mercury MontegoEngine & cooling

Reference tsb 11-10-21, the car will surge and try to move forward quickly when at low idle and slowly moving at times when the car is close to another car such as parking in a parking lot. If the driver isn't quick-reacting with the foot already on the brake pedal, the auto could move quickly and contact the nearby auto or structure before the brake is pressed stopping the vehicle from lurching/surging forward. There is a tsb issued, but it should be a safety recall due to the risk of contacting another nearly vehicle or structure. It has steadily grown more frequent over the past year.

Filed Incident EngineNHTSA 11231364
2005 Mercury MontegoElectrical systemEngine & cooling

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 Incident Electrical system · EngineNHTSA 10882183
2006 Mercury MontegoElectrical systemEngine & coolingFuel system

Wrench light comes on, car spits and sputters and dies. After restartitbe car, light is off. Happens multiple times a week. Car will not drive without restart.

Filed Incident Electrical system · Engine · Fuel / propulsion systemNHTSA 10863448
2005 Mercury MontegoAcceleration & cruise controlEngine & cooling

Tl* the contact owns a 2005 mercury montego. While driving 15 mph around a corner, the vehicle jerked and the check engine and fail safe mode warning lights illuminated. The vehicle was taken to the dealer where it was diagnosed that the throttle body control unit failed and needed to be replaced. The vehicle was repaired; however, the failure recurred. The manufacturer was notified of the failure. The failure mileage was approximately 150,000.

Filed Incident Vehicle speed control · EngineNHTSA 10853512
2006 Mercury MontegoTransmission & drivetrainEngine & cooling

Tl* the contact owns a 2006 mercury montego. While driving 50 mph up an incline, the vehicle jerked. As the accelerator pedal was depressed, the vehicle failed to accelerate and the check engine warning light illuminated. The failure recurred on numerous occasions. The vehicle was taken to a dealer who diagnosed that the valve body needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 120,000.

Filed Incident Power train · EngineNHTSA 10824043
2006 Mercury MontegoEngine & cooling

When accelerating suddenly the vehicle would just shift out of gear, make a loud clunking noise and violently thrust forward and then back. It happens a lot when trying to accelerate onto a highway. It is very scary feeling. It is a sudden jolt. When we took the car to the dealership the repairman said has seen a lot of the harsh shifting failure with the transmission with the montego.

Filed Incident EngineNHTSA 10759088
2005 Mercury MontegoTransmission & drivetrainEngine & cooling

I just pulled my car off the lot not even 10 minutes later there was jerking then my car stopped dead in the middle of a busy street.This has happened numerous times with the worst being on a one way and my nieces no more than 10 years old in the car my car made a kind of a loud humming noise,jerked then stopped in the street.At times I can't even reverse or go up steep hills. *Tr

Filed Incident Power train · EngineNHTSA 10713200
2006 Mercury MontegoEngine & cooling

Tl* the contact owns a 2006 mercury montego. While driving approximately 50 mph, the engine suddenly malfunctioned and shut off. During the incident, the check engine light illuminated and the engine failure message was displayed. After restarting the engine, the vehicle operated as normal. The vehicle was taken to the dealer who diagnosed that the throttle body was faulty and needed to be replaced. The vehicle was repaired. The manufacturer was notified of the failure. The failure mileage was 85,600.

Filed Incident EngineNHTSA 10712049
2006 Mercury MontegoEngine & cooling

Tl* the contact owns a 2006 mercury montego. The contact stated that the service engine warning light illuminated. The vehicle was taken to a dealer where the code was reset, but the failure recurred. The manufacturer was notified of the failure. The approximate failure mileage was 100,000.

Filed Incident EngineNHTSA 10693103
2006 Mercury MontegoTransmission & drivetrainEngine & cooling

When I started accelerating it would studder when rpms went up and then basically wouldn't let me go over 50. I took it into car repair shop and they said my throttle body needed to be replaced. I looked online and saw this was a recent recall. Have I missed out on this or what? I need some answers please! *Tr

Filed Incident Power train · EngineNHTSA 10683804
2006 Mercury MontegoEngine & cooling

Tl* the contact owns a 2006 mercury montego. While driving approximately 60 mph, the engine stalled without warning. The vehicle failed to restart and was towed to an authorized dealer for diagnostic testing. The throttle body was replaced, but the failure recurred twice after the repair was performed. The manufacturer was notified. The approximate failure mileage was 48,942.

Filed Incident EngineNHTSA 10643271
2006 Mercury MontegoLightsEngine & cooling

Tl* the contact owns a 2006 mercury montego. While driving approximately 10 mph, the vehicle stalled and would not restart. The vehicle was taken to a dealer for diagnostic testing. The mechanic stated that the tail light needed to be replaced. The vehicle was repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 89,803.

Filed Incident Exterior lighting · EngineNHTSA 10622102
2006 Mercury MontegoSteeringEngine & cooling

Tl* the contact owns a 2006 mercury montego. The contact stated that while driving at an unknown speed, the steering wheel became inoperable when turned to the left. The vehicle was taken to a mechanic who stated that the steering column and top motor mounts were rusted. The vehicle was repaired. The manufacturer was notified. The failure mileage was 60,000. Updated 10/07/14*lj updated 05/12/2015 *js

Filed Incident Steering · EngineNHTSA 10597149
2005 Mercury MontegoEngine & cooling

Upon entering traffic flow on i-94 westbound near new buffalo michigan the acceleration of engine quit instantaneously and the engine warning light lit up reading something about a fail safe mode. After coasting back across two traffic lanes to the side of road I shut the engine down. To keep from getting stranded along the highway and since the engine info light read all systems were ok after waiting a few minutes I restarted the motor and it ran ok. I stayed in the slow lane so I could pull off the road if it happened again which it didn't . The next day on county road 500n in indiana it did it again. *Tr

Filed Incident EngineNHTSA 10594690

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

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