Vehicle Speed Control Problems of Mercury Montego

The contact owns a 2006 Mercury Montego. The contact stated that while parallel parking, the vehicle independently accelerated and lunged forward. There were no warning lights illuminated. The contact stated that the failure was due to the throttle body. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not contacted. The failure mileage was approximately 80,000.

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The throttle control transmission has failed me several times when I’m on the road. Thankfully it’s only left me stranded on the side of the freeway once but has made me stop during oncoming traffic several times. The wrench light comes on when the vehicle decelerates and I’m unable to accelerate. Once the steering wheel even locked. This happens at random times but because the code is pending mechanics can’t seem to find the issue. This has happened dozens of time where it just stops suddenly while driving. I am concerned for the safety of me and my family when driving this vehicle. Please get this issue resolved!.

My car goes into limp mode when the cruise is set and it approaches any incline.

The car has been lurching forward and decelerating randomly. Keeps going into "failsafe engine mode" and the wrench light comes on but only for a few moments, then runs normally again after restarting. Haven't been able to have the light on long enough to get diagnostics done. Happens while driving or when starting occasionally.

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Traveling at freeway speed, vehicle lights all flickered the lost power. . Engine continued to run, was able to coast vehicle to shoulder of 35w, apply brakes and stop. Turned off vehicle and restarted within a few minutes. No lights no dash lights. . Flooring the gas pedal able to get 30 mph uphill approximately. At top of hill power came back on. . Then killed again. Tow called. Currently at garage where sensors are showing transmission problem.

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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.

The contact owns a 2005 Mercury Montego. The contact stated that while driving approximately 70 mph and merging into the left lane, there was no response from the vehicle upon engaging the accelerator pedal. In addition, the vehicle jerked violently. The vehicle began to accelerate normally several seconds later. The vehicle was taken to an authorized dealer where the throttle body was being replaced. The manufacturer was not notified of the problem. The approximate failure mileage was 70,000.

The contact owns a 2005 Mercury Montego. While attempting to depress the brake pedal, the vehicle began to accelerate and the traction control, check transmission, and failed safe mode warning lights illuminated. Due to the failure, the contact crashed into a bush while attempting to park the vehicle. There were no injuries and a police report was not filed. The failure recurred randomly. The vehicle was taken to several independent mechanics, but the cause of the failure could not be determined. The vehicle was not repaired. The manufacturer was notified. The failure mileage was approximately 270,000.

This vehicle has a serious/scary "surging" problem when shifting from park to drive, park to reverse, drive to reverse, reverse to drive or when simply maneuvering to park. This problem began a couple of weeks ago and has gotten progressively worse. A web search has shown that this problem is pretty common in this auto but I have yet to see the problem pinpointed. This is a real safety issue.

This vehicle has a problem when shifting from park to drive, park to reverse, drive to reverse, reverse to drive or when simply maneuvering to park. You can hear the engine rpm increase quickly, then decrease just as quickly when this happens. This typically occurs when the vehicle is placed in reverse and the wheel is being turned and the my foot is on the brake pedal. This problem began a month ago and has gotten progressively worse.

Car was completly stopped at a red light. Then all of a sudden the car lurched forward 5 feet with foot on the brake. This makes the 3rd or 4th time in the past year it has happened. Lucky no one was in front of me.

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.

Engine speed fluctuates suddenly with no operator input (throttle pedal), especially when shifting (automatic) transmission from park to reverse or drive. Causes vehicle to lunge during parking maneuvers. Also requires abnormal braking input in traffic when normally engine braking would suffice. Has been serviced once by a Ford dealer (computer was reprogrammed); was not successful.

The contact owns a 2007 Mercury Montego. The contact stated that while attempting to park the vehicle lunge forward. The vehicle was taken to the dealer, who stated that the throttle body might be defective. The manufacturer was not made aware of the failure. The vehicle was not repaired. The VIN was not available. The failure mileage was 85,000 and the current mileage was 90,000.

We own a 2005 Mercury Montego premier. Over the past several months have noticed alternate stalling or random accelerating however on Saturday, as I was accelerating the vehicle suddenly stalled & refused to go over 1,000 rpms. We took the vehicle to a local repair shop who performed a diagnostic which located the failure at the throttle body. Car is currently @ local repair shop, estimate of $850. 00 to repair.

The contact owns a 2005 Mercury Montego. The contact stated that while driving 30 mph, the entire electrical system malfunctioned and caused the rear brakes and instrument cluster to fail. The vehicle was taken to an authorized dealer, where a diagnostic test indicated that the throttle body and alternator were faulty. The dealer replaced the throttle body, but not the alternator. The failure continued. The vehicle was taken back to the authorized dealer, where they were unable to diagnose the failure. The failure mileage was 95,275.

Vehicle surged when put in reverse, vehicle lunged, engine ran rough and vehicle died. Vehicle was hard to control with service brakes. This happened several times and the check engine light came on. Codes p2106 and p061b are showing. Vehicle has been surging for a couple of years, only slightly when shifted into gear.

The contact owns a 2006 Mercury Montego. While driving approximately 10 mph, the contact depressed the brake pedal upon approaching a traffic stop signal. The vehicle suddenly lunged forward without warning. The failure recurred whenever the brake pedal was engaged during a complete stop. The failure became progressively worse. The vehicle had not been diagnosed or repaired. The manufacturer was not notified of the problem. The approximate failure mileage was 80,000. The VIN was unavailable.

Engine revs up, and car lurches, typically when: - shifting into drive or reverse and/or moving away from idle; - almost always when the wheels are cranked all the way to the left or right and the car is moving away from idle. The lurching is sudden and "violent" enough that it can catch a driver unprepared - my wife and I are used to it and able to compensate, but we aren't letting our 17 year-old drive the car for now unless one of us is with her. Ongoing problem since car was purchased new. This has been an occasional problem for years - complaint was even made while car was still under its 3 year/36,000 mile warranty (nothing found). Problem has been getting more frequent over the past year or so.

I have experienced a sudden unexpected lunge when backing out of a parking space after placing the vehicle in reverse on several occasions. You can hear the engine rpm increase quickly, then decrease just as quickly when this happens. This typically occurs when the vehicle is placed in reverse and the wheel is being turned and the my foot is on the brake pedal. It has also occurred again when the vehicle is put into drive after going from reverse and the wheel is turned. Having the brake pedal depressed, is effective in stopping the vehicle, but since the timing and circumstances of the malfunction is unpredictable, it has become a noticeable and constant issue. I thought my vehicle was an isolated issue, but it appears to be more widespread. After seeing this issue on online discussion boards for Ford five hundred/montego/freestyle vehicles and now the 2005-2007 Ford freestyle investigation, I would strongly urge NHTSA to expand this investigation to include 2005-2007 Ford five hundred/Mercury Montego since these vehicle use similar drivetrain components. The symptoms I have seen are exactly the same as those described in the investigation of the Ford freestyle in investigation pe 11-018 opened on 5/11/2011.

The contact owns a 2005 Mercury Montego. The contact stated that after shifting into gear, the vehicle lunged forward abnormally. The vehicle was taken to the dealer who was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired and the VIN was not available. The failure mileage was 50,000 and the current mileage was 86,087.

Our 18 year old daughter who has a permit was driving our 2007 monetego one evening with me. When she went to park at a drive inn restaurant under my guidance, she was pulling into a parking space and the car unexpectedly lunged forward. As an inexperienced driver she panicked and took her foot off the brake - endangering the lives of at least 10 people that were eating at the picnic tables outside of the restaurant. Thankfully the car was going at a relatively low speed and the curb stopped its forward motion. I had noticed intermittent "lunging" when I applied the brakes just a few times before this and a clunking when shifting and I had already taken it to my local mechanic who checked the transmission and brakes but said they were fine. After the incident with my daughter we took the car to the dealer and they said that the throttle body is bad. I called Ford three times to no avail. I have since done some searching on the internet and have found that this is a real problem for many people which actually confirms what the service manager at the dealership told me. He actually said that the service department there has seen a number of these fixes and he stated that the defect is very dangerous - there needs to be a recall now!!!!!.

We own a 2006 Mercury Montego and we have an acceleration problem that seems to be happening more and more. After starting the vehicle with the brake applied and I shift in reverse, the engine will rev up and try to force the car to move so I apply mt brakes even harder. This only lasts a few seconds. Then I shift into "drive" and with the brake still applied, it may do it again and try to take off when in fact I was not yet ready to press on my accelerator and it just wants to accelerate on it's own. . Read more...

The contact owns a 2005 Mercury Montego. The contact stated that while driving, the vehicle began to jerk and knock and when she depressed the accelerator pedal, the speed would not increase. Also when she attempted to brake, the vehicle would not slow down and at times would actually speed up. The contact called the manufacturer who stated that the throttle body and transmission had to be replaced at her expense. The vehicle had not been repaired. The current and failure mileages were approximately 77,000.

The contact owns a 2005 Mercury Montego. The contact stated while driving at approximately 65 mph, the vehicle independently shifted into failsafe engine mode. There was also an unusual increase in engine rpms. The contact shut off the vehicle and when restarting, the warning light was no longer illuminated and the vehicle resumed normal operation. The dealer advised that the failure was potentially caused by debris and should have corrected itself. The contact was advised not to bring the vehicle in. The failure recurred within three days. The vehicle was taken to a local repair facility where the contact was advised that the throttle body was defective and recommended a fuel injection service. The vehicle was taken to the dealer where repairs were made. The manufacturer was not contacted. The failure mileage was approximately 178,000 and the current mileage was approximately 179,000.

The contact owns a 2005 Mercury Montego. The contact was driving at speeds of 20 mph. When they attempted to pass another vehicle, she depressed the accelerator and the vehicle was hesitant to increase speed similar to driving while in neutral. In addition, when depressing the brake pedal, the vehicle would jerk abnormally. The dealer reset the vehicle computer system and the vehicle returned to normal operation for a short period; however, the failure recurred. The contact had not taken the vehicle back to the dealer. The failure mileage was 51,000 and the current mileage was 64,000.

The contact owns a 2005 Mercury Montego. She stated that the throttle body failed which made the vehicle shut off in the middle of the highway. She pulled over and turned the engine off and back on then it shut off on its own. The following day the failure recurred and the check engine light illuminated on the instrumental panel. The dealer stated that they would repair the vehicle at the owners expense when the part were available. They later stated that the part was available and that they have exhausted all options to repair the vehicle. The vehicle was not repaired; however, it remained in the dealers possession. The service manager stated that they would not repair the vehicle and the contact should retrieve it. The vehicle identification number was unavailable. The failure and current mileage were 57000.

The contact owns a 2007 Mercury Montego. The contact stated that the throttle body control failed twice. When the failure occurred the vehicle would accelerate when he removed his foot off of the brake pedal and before he placed his foot back on it. The throttle body was replaced twice in the past 15 months. The failure mileage was 86847. The current mileage was 109847. Updated 01/20/11 updated 04/13/11.

Since vehicle was purchased, when shifting from park to reverse or drive, the vehicle will lunge back or forward, even with brakes applied. Have had to push brake pedal harder than what is normal to prevent this from happening. Dealer "could not duplicate problem" when car was under warranty. Car is now out of warranty and I was told the throttle body needs replacement.