Back sliding window doesn't work, popping sound from the rear end when you accelerate from a stop.

- Tiller, OR, USA

July 6 lost power to truck engine at 60 mph when going to pass in hard acceleration situation. Truck engine shuttered for over 3 mins until I could get it stabilized around 2000 rpms in a lower gear/speed. This was the first of two similar situation on the same day with the truck and throughout the remainder of the day any acceleration over 3500 rpms caused a loss of power. We limped the vehicle home that day. Next day check engine light came on and off until we could get truck into our local Ford dealer for service on 7-13. This issue has been researched via info on this site to no conclusion. I can say if you drove this vehicle and simulated this issue you would see the major issue this causes and potential risk of accident at highway speeds with acceleration. Specifically heavy traffic situations. The issue caused spark plug damage, catalytic converter damage and the dealer performed the tsb (4th issued by Ford) to attempt to fix the issue. This is a known issue, causes safety issues and should be recalled to permanently fix not try to patch with four different tsb. Fix this correctly before accidents occur that cause deaths. Updated 9/25/15 updated 3/23/2016 updated 11/27/2017

- Overland Park, KS, USA

24,991mi: Misfire when accelerating while driving. No check engine light. Dealer reported no problem found, no codes & made no repairs. 29,440mi: Misfire when accelerating & going up & down hills specifically when in 4,5, 6 gear during both flat & inclined highway driving. This was while pulling an 8000lb trailer. No check engine light. Dealer found misfire in #1 & 4 and replaced coils & plugs in #1 & #4 only. Test drive still showed misfire, then replaced turbo boost pressure sensor. I was told that moisture had damaged the plugs & sensor. 35,214mi: Misfire when taking off from a stop, during normal acceleration and going up hills.no check engine light. Dealer replaced the drivers side exhaust manifold because it was warped. 37,164mi: Misfire when taking off from a stop, during normal acceleration & going up hills. I saw this in acceleration conditions from 10-60mph without towing a trailer. No check engine light. Dealer reported no problem found, no codes & made no repairs. 38,577mi: Repeated severe misfires while going up moderate inclines. Check engine light came on (first time this ever happened) & I had a reduction in power, could not get out of 3rd gear & my speed dropped from 65mph to 50mph. After repair had moderate misfires during major inclines while towing a trailer but no check engine light. 39,000mi: While towing a trailer, experienced series of moderate to severe misfires in waves be ok for an hour & then go into a series of misfires for 3-10 minutes. Some were on hills, some were on flat highway driving. I had 5 occurrences where the check engine light came on during this drive. 3 of these were during a hill climb where I had a power reduction & lost speed. Vehicle stayed in 3rd gear. When I would get a series of severe misfires, misfires were so severe (without the check engine light on), that I could hear & feel the turbo kick off & on..

- Fort Collins, CO, USA

When attempting to accelerate from a complete stop the truck will only move forward when the pedal is fully depressed. When this is happening the truck barely moves then it will catch and lunge forward at break-neck speed. This same thing happens at approximately 30 mph, will be accelerating normally when all the sudden the RPM and speed gauges completely drop the engine losses all power and if the pedal is continued to be pressed the truck will lunge forward, again at break-neck speed. In a 10 mile trip it can happen 3 or 4 times. Today we had a new experience where when decelerating to come to a complete stop the motor began revving to redline all while only the brake was depressed. On green light the acceleration again was limited to full petal and a limp till burst mode. These events all scare the family to the point of not riding in the vehicle.

- Kent, OH, USA

2012 F150, 5.0 V8 3 years off lot when July 4th gets here in 2015. 33000 miles and 4 of the spark plugs are shot, Ford tech said gaps are off. From factory. O2 sensor also shot. Working on it now, better be covered under bumper to bumper, because $1100 dollars is a lot to put into practically a brand new truck.

- Lancaster, OH, USA

I was merging on to the expressway and went to merge and mashed pedal to the floor the 3.5 ecoboost engine would not accelerate and lost power. I was almost run over by a tractor trailer truck. Had there not been a third lane for him to Dodge around me I wouldn't be sending this complaint, I would be dead. Ford has to find a fix for this problem immediately.

- Woodstock, GA, USA

While attempting to pass a slow moving vehicle on a two lane road, the engine on my truck started sputtering, then lost speed and power very rapidly. At that point the check engine light started blinking and the truck almost stalled. Fortunately I was able to pull into a parking lot and avoid other drivers. Had an oncoming car been too close, or had I not had a parking lot to pull into, there was a strong possibility I would have had an accident. I have had this happen to a lesser degree in the past, but not to the extent I experienced above, nor did the check engine light ever start blinking. At the time I passed this off as being bad gas, my tires slipping or some other issue and thought no more of it. At this point I don't want others to get put into the same situation, which could result in someone getting hurt. Because reports of this happening to trucks of the same year, make, model and engine I felt compelled to file this complaint.

- Trenton, MI, USA

Back out of garage turned steering wheel to left; put in drive pulled ahead, advance track light came on and service advance light also came on. If you don't reset light the signal lights don't work unless you hold the lever up or down it bring codes up C1B00 and U0428-20 andu2101 which dealer says steering sensor is bad but not serviceable so you need new electric steering rack. This is on a 2012 F150xlt and there is no recall but I think this is a safety issue, also I think it is a power train issue.

- Seaford, DE, USA

When there was snow and ice on the highways I put my truck in 4 wheel drive and when turned back into 2 wheel drive I began to notice a grinding and vibration noise that occurred when turning. Then couple weeks later the noise started when backing out causing truck to shake and lose power to barely back out. This noise continued and has gotten worse. Was taken to dealership and looked over. Updates were made as well as oil change but days later noise came back. Since 2/12/15 my truck has been in the service department four times and has performed recommendations by Ford but days later noise comes back. The last time my truck was in I was told by the owner and service manager my truck is not fixable as they were informed other 2012 F150's are having same issues and an investigation is being done. Since this my truck is shaking more backing up, jerking the vehicle on the highway as if losing power than will gain power and jolt forward, I hear this grinding noise all the time when driving at different speeds from 30-60 mph, turns, and backing up. The other issue is when truck gets to 60 mph or higher it does not shift down unless I let up on pedal and then push it again. I am feeling unsafe in this vehicle as twice now I have heard a popping noise while driving with this noise. The dealership has told me there is nothing more they can do. The issue has been reported to Ford and they have done nothing for me. I want to get rid of this truck as I do not feel safe driving it like this.

- Hutchinson, MN, USA

At passing speeds or during acceleration the vehicle will stall and check engine light will come on and start flashing. It only does this when accelerated and has almost caused accidents. After numerous occasions of this happening the light has continuously stayed on and now it won't go off.

- Weaubleau, MO, USA

Engine shut off completely a big wrench came up on the screen where the mpg and stuff are almost got rear ended due to rush hour traffic.

- Eldridge, IA, USA

Differential lock activates by it's self. Light comes on instrument panel showing rear axle locked. Rear axle locks up at speeds below 20 mph. If stopped at a light or sign your rear wheels will drag as if the brakes are being applied. It can happen at any time. If going over 20 mph some times the instrument panel message center lights up and says you have to slow down below 20 mph to apply rear differential lock. Happens mostly in 2wd. This has happened for over 6,000 miles. Can be on dry pavement or rough surface. Have noticed that the 4WD mode switch on dash will seem loose and the knob will pull out if you hit a rough road surface. I have replaced the mode switch at my expense (1) time at my expense P/N cl3Z-14B166-ea. Dealer and Ford still trying to figure out problem. This causes vehicle to loose communications with obd circuit and several other modules. Not allowing system to download codes or to update parameters.

- Strawn, TX, USA

After driving in raining conditions for more than four hours, I attempted to pass another vehicle. When I accelerated, my vehicle began to lose power and shake violently. Because of this, I nearly cause a multiple car accident do to my inability to control my trucks rapidly reducing speed. The same issue or type of issue occurred in late August of 2013 while attempting to merge into traffic. Upon acceleration attempt, the engine reduced power, failed to respond and the vehicle shook violently. A Ford dealership completed tsb-13-8-1, however, it was reluctantly done as no code would verify a problem. The truck is currently at another dealership, who once I explained the problem I was having, told me that I needed to have tsb-13-8-1 performed. I mentioned it had been performed and was told that unless a code could verify a problem, nothing could be done. This is a well documented problem, with many occurrences. This vehicle is going to get someone killed if someone doesn't correct the issue. It is not something that can be "created" by a mechanic to, it only happens in real-life situations. Is there something someone can do to make Ford research, identify and correct this issue before even one death?

- South Mills, NC, USA

Hear a whining noise coming from the transmission/rear of truck as truck accelerates, upon deceleration after and before down-shifting, and when cruising at a constant speed when transmission 'catches' to maintain speed. Researched and found tsb 13-6-4; truck was made between dates and describes noise accurately - spoke to Ford service center and truck fits within manufacturer dates of tsb, but not specific engine, just transmission. Told issue wasn't "recall worthy" because it isn't a 'safety' issue, but if my transmission locks up at highway speeds this will be a 'safety issue'.

- O'fallon, IL, USA

During hard acceleration after normal driving vehicle sputters/misfires heavily, no recall or adjustment has been available from Ford. Extremely dangerous in traffic and is keeping me from pulling any type of payload because I am concerned this will occur. I now have 41,000 miles on vehicle and it still does it, forced to drive the truck only under soft acceleration.

- Blue Springs, MO, USA

3.5L ecoboost F150 began to shudder and fail to accelerate while trying to merge into interstate traffic. Had to slow down to keep it from continuing to shudder. This has happen repeatedly on at least 4 different occasions! dealership says it show no codes for misfires"?"

- Sioux Falls, SD, USA

I was with my family on the way to church. I was making a right turn out of our neighborhood onto the highway when all of the sudden there was a complete loss in power and was unable to resume acceleration. The highway also has a moderate incline in slope which caused the vehicle to slow dramatically. We were almost rear-ended from the car heading in the same direction which was originally a substantial distance away. Luckily the car that was approaching from behind was able to slow down fast enough considering we had a 1 year and 4 year old son in the back seat. I called the local dealership and the earliest appointment they could offer to check the problem was on Wednesday 10/10/2014. This is over 3 days after the incident occurred. The truck only has 40,000 miles on it so I began researching this issue. I discovered that there are more than a substantial amount of complaints and it seems Ford is aware of the issue and is even attempting to modify the air induction system and re flash the PCM. With issues like the millions of vehicles being recalled for airbags that have led to serious injury or death, far beyond the manufacture originally becoming aware of the issues. How long is the issue regarding the 2011-2013 Ford F150 ecoboost going to remain shoved under the rug? how many lives have to be lost before Ford takes accountability for putting the public at risk. In their report to this specific issue (on the NHTSA website), it is more than obvious they have identified a defect in the 2012 Ford F150 and the ecoboost engines within the trucks. Can you help me understand how and why they are not being held accountable for risking the lives of many people. Also, why is the NHTSA allowing Ford to shrug this off and close this investigation" there is a clear defect present that has the potential of leading to loss of life. Is this not pure negligence"

- Rancho Murieta, CA, USA

The contact owns a 2012 Ford F-150. The contact stated while driving approximately 60 mph, the vehicle lost power and failed to accelerate. The contact had to restart the vehicle in order for it to resume normal function. The failure recurred twice. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 33,000. The consumer stated both incidents occurred at highway speeds when it wac actively raining or had been raining when it was very humid. The dealer was unable to duplicate the problem, because there were no codes stored. Updated 01/13/15

- Blairsville, GA, USA

I had been on the highway for 6 hours with intermittent rain, about 3.5 hours since last stop, 1/2 tank of gas remaining. Location was I-65 North near elizabethtown, ky, 11:15 pm, with mist, wet road and spray. Weather records indicate 50 degrees and falling, light rain, 84% humidity. I had the F-150 in 4WD-auto mode due to the road conditions. For several miles another car had been continually staying in my blind spot in the lane immediately to the left, despite attempts to clear with gradual reductions/increases in my speed. My general cruising speed was about 70 mph. I was in the right lane approaching a very slow-moving tractor trailer, so I accelerated moderately-hard to move ahead of the car to my left and was changing into that lane when the F-150 started shaking violently and lost speed. My wife thought that we had collided with something in the road. I quickly veered back into the right lane and braked hard, narrowly avoiding an actual collision. I suspected we had some type of engine or transmission problem, but while coasting the vehicle seemed to be running smoothly. I switched from 4WD-auto to 2wd and tried to gently accelerate again, but the F-150 started shaking again and the check-engine light started flashing. I pulled off of the road, and by the time I came to a stop the light had stopped flashing. I checked all around and under the vehicle, under hood, gauges, etc. With no further sign of a problem. I stopped and started the engine, then drove away and the F-150 performed normally for remainder of trip to louisville, ky. The next day I took the F-150 to a local dealer, who advised that I had experienced the "classic scenario" for condensation in the charge-air cooler, causing engine misfires. The F-150 is getting very poor gas mileage ever since. Home dealer has declined service because obd codes are no longer present. Engine: 3.5L gtdi (ecoboost).

- Tupelo, MS, USA

The contact owns a 2012 Ford F-150. The contact stated that while driving approximately 20 mph, the vehicle decelerated independently and there was a sudden increase in engine rpms. The vehicle was not repaired. The manufacturer was not notified of the failure. The approximate failure mileage was 60,100.

- Dallas, TX, USA