While driving approximately 60mph the vehicle suddenly downshifted to first gear on its own causing the tire to lock up putting me into a skid on the highway pulled over restarted vehicle then was stuck in 5th gear and would not accelerate. Shut off vehicle and returned to normal then happened again the next day!

- Spring, TX, USA

Vehicle backfired and started shuttering upon acceleration...check engine light came on replaced ignition coil 6. 1000 miles later, same situation cylinder 1&2...replaced those coils and replaced spark plugs. Shuttering lessoned, still backfired on upon strong acceleration. Definitely a safety concern. The backfire does not trigger the engine light to come on...from the research I've done, this seams to be a common problem with the eco boost

- Clifton Park, NY, USA

2012 F-150 has an eco boost 3.5 L motor that misfires in damp/wet/rainy/cool weather. Motor goes into a misfire mode with no power to drive or accelerate truck. Before the mileage warranty was up, truck was taken to Ford for their "fix". however, the issue has remained from 2012 to current year, 2018, and without Ford fixing this problem will continue for the indefinite future of these motors from Ford. Cannot trust truck to perform when needed and a safety hazard when driving, towing or accelerating when this occurrs.

- Sedalia, MO, USA

While driving vechicle suddeningly lost power, this is the second time this has happened in the last 7700 miles. Very dangerous as this has happened in heavey traffic and almost caused an accident. Truck has the ecboostengine. ## VIN passed ## 2012 Ford F150 ##

- Greencastle, IN, USA

My truck is sputtering at full throttle and throwing a flashing check engine light that is now staying on. It happened on a highway during hard acceleration

- Boise, ID, USA

My truck would lose power at times then would not start. Dealer advised the fuse to the fuel relay pump was burned and needed to be bypassed to a larger fuse because the fuse installed by the manufacture is too small. This repair cost me $411. Dealer advised this was a defect from manufacture and was common in the 2012 year model. I researched the issue and located many complaints about vehicles losing power on the highways and almost involved in collisions due to the fuel pump problem. I'm sure there are many complaints and accidents that can be attributed to the defect which causes fuel disruption.

- Brownsboro, TX, USA

The contact owns a 2012 Ford F-150. On several occasions, while driving various speeds, the vehicle stalled and lost power. The contact was able to restart the vehicle after 30 to 40 seconds. There were no warning indicators illuminated. The vehicle was taken to a dealer where it was diagnosed that the fuel module wires melted and needed to be replaced. The vehicle was replaced. The manufacturer was notified of the failure, but did not offer assistance. The failure mileage was 125,853. Updated 08/24/17

- Minden, NV, USA

While trying to turn into traffic lost all power to accelerate and stayed in first gear. While on the interstate drops into lower gears without any warning. I stoped driving this vehicle due to my family's safety being jeopardized. I dropped the truck to a local dealership and was informed it is due to a lead assembly to the transmission. The repairs would be over a thousand dollars. While researching I have noticed multiple F-150 with my engine (3.5 ecoboost ) have had this safety issue. I was informed by Ford to contact you and report the issue.

- Jacksonville, FL, USA

My 2012 F150 ecoboost 3.5 studders severely, hesitates, and will not accelerate when trying to pass on the highway. The dealer has bulletins addressing this. I have been told multiple repairs that now are not under warranty including cac cooler deflector, spark plugs, catalytic converter, cam phasers, timing belt, and many others. The truck started this problem and may now require the turbos be replaced. This is a very common problem with this motor and Ford is well aware of the issue. This defect should be covered by Ford.

- Temperance, MI, USA

While driving on the highway I experienced severe reduced engine power during a hard acceleration for an attempted pass. Upon completion of a diagnostic, I was told there was a misfire in cylinders 1-3. the technician informed us the circumstances and results were hallmark for a known condition related to moisture accumulation in the charge air cooler (cac) for turbochargers in 3.5L ecoboost engines of my model year. The vehicle had just over 54K miles on it at the time of the incident (typical mileage for the problem to manifest). The vehicle was maintenanced one week after the incident at the dealership I purchased it new from. The dealership cited the cause of the misfire as bad coil packs - 4 of them at the time of arrival. Coil packs typically have a lifespan of 100-150K miles before failure. However, 4 of them went bad (3 simultaneously) in a vehicle with <55K miles on it. Literature posted about others/similar situations read the same - bad coil packs, due to ingestion of water into the turbo. An issue Ford was aware would happen without the deflector plate due to design flaw! no alert to the owners that it was a potential concern, bring the vehicle in for a check - no word at all! if there was a known problem with their turbo design leading to compounding premature failure, why wouldn't they let the owners know" the dealership would have had ample opportunity to inform me of the issue if that was their intention as I visit regularly. The call center rep said they don't have to tell us anything unless there is a recall. So basically they manufacture dangerous/problematic vehicles until NHTSA slaps their hand about it!" I surely hope everyone who has this issue is reporting it to NHTSA but I doubt they know it is an option and Ford is profiting from having additional maintenance performed at their dealerships.

- San Antonio, TX, USA

Dealer identified fuse #27 melted causing stalling and potential to overheat circuit causing an electrical fire. Not covered under Ford certified pre owned warranty for powertrain etc. Vehicle stalled in traffic and failed to restart until after third attempt..

- Glendale, AZ, USA

2012 F-150 ecoboost with 55K miles. Sever loss of power and missing during idle and acceleration. The issue started at 15K miles and after a lot of pushing, Ford installed the deflector shield for water. That solve the problem for heavy rain, but the missing, lack of power, and poor mileage has persisted and is getting worse. The issue happens when the vehicle is in park, stationary in drive, and while under power. It is really bad when it is under heavy power. This is dangerous when it comes to merging into traffic and loosing power all of the sudden. It seems to be worse when it is hot and/or hot and humid out.

- Thornton, CO, USA

Driving truck at 65 plus miles per hour on interstate and vehicle stalled out lost power steering and brakes and was too close to having an accident. Later found out that fuse 27 had melted and lost all fuel pump pressure.

- Rio Rancho, NM, USA

The engine light came on 3 times and my truck dropped speed to what Ford calls "limp home mode" which is rough idle. When the truck is restarted, it runs fine. The Ford dealership reported that my throttle box needed to be replaced for $388. The truck has 50,000 miles on it and out of warranty (not covered under power train). They also then told me I should do a fuse relocation because its a known problem with this vehicle but its not a recall. The total cost would be $750+ I guess I'll role the dice on the second part since its not a total failure yet.

- Slidell, LA, USA

When on cruise control going 60-70 mph, and you pull out to pass and step on the gas, the ecoboost "hesitates" and will not gain speed, but loose speed. I can only stop this by downshifting, then reengaging the gas. This can be a very dangerous situation. This has happened about 10 times over the last 4 years.

- Madison, AL, USA

Vehicle fuel pump shuts off while driving due to fuel pump fuse (location #27) burning up in fuse box. After my vehicle shutting down while driving several times, last on the highway, with a total loss of power steering and other safety concerns, I found Ford has issued a tsb (tsb 15-0137) with a work around fuse relocation. This is unsatisfactory as this is a known issue to Ford, but not the consumer, putting drivers at risk. The fuse at issue, location #27, literally melted and burned up in the socket.

- Lake Worth, FL, USA

I took delivery of this truck in March of 2012. The truck has had documented ongoing serious drivability, safety and reliability issues since October of 2013. The issue of immediate concern relates to ongoing misfire, back fire, and engine stall. This condition has occurred at low speed, highway speed, and while towing. The immediate loss of power and subsequent surging effects caused by this condition renders the truck hazardous to me, my family, and other motorists. This issue has been repeatedly reported to and serviced by Ford. I have also personally filed complaints and concern with Ford Motor Company. See Ford customer service case number 8603638. The misfire, back fire, and engine stall is the current ongoing issue but you will also see in the service history this vehicle has also experienced traction control, drive shaft, steering system, and sensor/electrical component failures dating back to may of 2012. It is my understanding Ford Motor Company is aware of this issue with the eco boost engine and drivetrain in my truck. This known issue was responded to by tech service bulletin 13-2-14. However, the mitigation measures of that bulletin and other subsequent service attempted to repair my truck have not been successful. Further, the service bulletin does not take into account the significant safety issue of a truck traveling public roads and experiencing sudden loss of engine power. Finally, I want to point out that the ignition/engine problems my vehicle experienced has caused premature failure to other components to my drive train. This includes fouled spark plugs, damaged coils, and likely accelerated end of life to other emission controls and mechanical components to the engine due to the misfire and water entering the combustion chamber.

- Sioux Falls, SD, USA

Ecoboost, almost 5 serious accidents in a year. In Jan, my wife, 3 children & I were on I-85 in heavy traffic when my truck stalled. We went from 65 mph to 20 & no power. An 18 wheeler was barreling down on us & had to make an aggressive move with his brakes locked to miss us & the other cars. I pulled the car through 4 lanes of 65 mph traffic, doing 15-20 mph & turned the truck off to get it running again. Next, I was stopped at a light. When the light turned green my truck stalled out 3 times before the truck would finally go. Over the next month my truck stalled at least 10 more times. In April, Ford told me that the ecoboost had a problem & they performed tsb 13-8-1, reprogramed PCM & installed deflector. I haven't notice any power loss, but lost 2 mpg from my normal driving habits. In June, I merged into heavy traffic & my truck stalled. 65 mph to idle on a major highway. I don't know how I avoided an accident. I pulled off the highway & turned the truck off to get it going. My truck stalled 5 more times before taking it back to Ford. In August, my truck stalled at an intersection 4 times. I completely blocked traffic for about 10 mins. I got on the hwy & went 8 miles. My truck stalled 14 times' very dangerous. Every time I got the truck up to speed, it would stall & I would have to pull it over & turn the truck off and restart it. In Aug I took my truck to Ford & they replaced the throttle body. 2 months later it was stalling again. Ford told me that it was misfiring & that they needed to change the plug boots, spark plugs & the fuel filter. I was told that it was the next step they were required to do. So now I'm paying Ford to test different things & hope that something works. Yesterday I pulled out onto a busy street & my truck stalled. I was almost T-boned. I am driving a time bomb. Every time I drive this truck I am risking my life & everyone around me.

- Cornelius, NC, USA

Vehicle is a 2012 Ford F150 3.5L V6 ecoboost. Vehicle had a full tank of gas (30 gal tank). Vehicle gas gauge began to drop quickly. Compared to trip counter gallons used, vehicle showed empty tag after only using 9.2 gallons. Upon filling gas and pump entering fill hole, pressure from the tank was released more so than any other time. Gas gauge repeated same issue upon adding the 9.2 gallons to fill the tank again. Gauge once again showed empty when approx 10 gallons were used.

- Beacon, NY, 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