6/11/13 driving in moderate rain in 75 degrees with cruise control on I attempted to accelerate to pass. Truck lost power and began to shudder rather violently. Check engine light began to flash. Incident lasted 20-30 seconds. This occurred again on 6/13/13 in similar conditions. I took the vehicle to a dealer in massena NY. They pulled a P-306 code (#6 cylinder misfire) and ran an oasis report. The report showed my exact symptoms as an ecoboost issue. They assured me it was not going to damage the vehicle so I drove it back to home in Virginia. I have an appt with my local Norfolk va dealer on 6/17/13. My build date is 03/03/13.

- Virginia Beach, VA, USA

On this new F-150 with eco boost engine, the engine now has shut down 2 times the last 2 days on June 12 and 13, 2013. The engine oil light came on. I was only going 20 mph when this happened both times since I was stopping at the stop sign 3 blocks from my house. On the highway with the engine in cruise control at speed of 60-65 mph the transmission goes from 6 th gear to 5th gear alot.

- Charlotte, NC, USA

When accelerating the engine shut off without warning. After the dealer provided service for this issue, the engine shut off while decelerating to a stop and again while accelerating from this stop. Most recently the engine has been very sluggish at times while attempting to accelerate.

- Brandon, SD, USA

While traveling at highway speed on I-69 in Michigan between lansing and flint, I attempted to merge into the passing lane to allow merging traffic from the on-ramp onto the expressway. In order to change lanes, I used firm acceleration to avoid contact with the faster vehicles in the passing lane. The steering wheel started shaking violently while the check engine light flashed. All forward acceleration was impossible the engine sputtered for 45-60 seconds after the event until power was restored. One week after I took delivery of the truck, this problem began on a similar trip on the way to toledo around the dundee exit on I-23. The vehicle only had 400 miles on it at the time. This was in early May 2013. I took the vehicle to the dealer who performed the tsb replacing the charged air cooler and updating the software in the engine control module. This can be repeated on any trip of significant duration on a rainy day. The tsb did absolutely nothing to address this problem, and I fear for my safety as well as my family's safety. I do not let me wife drive the car because she would not be as well equipped to deal with an event like this. I feel cheated by Ford, and I am not satisfied with their attempts of fixing this. Furthermore, I know every time this happens the engine is taking in large amounts of water through the intake, and this is catastrophic for engine life and longevity. Please pursue recall efforts now on this horrible engine.

- Eaton Rapids, MI, USA

Vehicle lost power when trying to pass another vehicle. Note I was in a 75 mph area trying to pass a vehicle that had trash flying off truck. In any case when I punched the accelerator the vehicle did a nose dive as it lost power. It took about 2 seconds for the vehicle to restore to normal operation.

- Anthem, AZ, USA

My vehicle is a 2013 Ford F-150 ecoboost. I was traveling on the interstate and my check engine light came on and the truck shuddered violently. While this was occurring the vehicle had little power. I was in the left hand lane, and was pinned between a tractor trailer on my right and a car behind me. The vehicle shuddered for approx. 8 to 10 seconds then stopped. I was then able to accelerate and pass the truck. Weather conditions: Raining temp: Between 75 and 80 degrees time: 7:00 a.M.

- Irving, TX, USA

Traveling on the interstate during heavy rains. Traffic in my lane stopped. I tried to change lanes and accelerate briskly. When I tried to accelerate, the vehicle started to shutter and the engine power died. It seemed to go into limp mode. The check engine light flashed several times. The vehicle would not accelerate and left me hanging in the travel lane with faster traffic almost causing a crash. Vehicle is one week old and has approximately 600 miles on it. The engine is the Ford ecoboost 3.5L V6. The vehicle had to be turned off and restarted to get it to drive normal again.

- Lakeland, FL, USA

On 5/22/13, while traveling on I-81 vehicle hwy mileage dropped from 20.3 to approx 16 mpg. On 5/23 while driving to Ford dealership in houlton, Maine I was passing a vehicle at 30mph ina 45 zone and the engine almost shut down. I had to pull back because of approaching traffic. At the Ford dealer, their computer check showed the engine dropped the #6 cylinder (that's what they told me). They said it was a ecoboost problem and would have to call the factory engineers. Two weeks later, I have not heard from Ford or the Ford dealer. I ordered & they built the truck in April 2013. It was delivered 4/26 at Cherokee Ford, woodstock, ga. I bought the ecoboost engine because of the epa hwy mileage rating of 21 mpg and paid $1050 extra to get it. I have always go better than the rated mpg on my vehicles, so this is not driving habits. [xxx] information redacted pursuant to the Freedom Of Information Act (FOIA), 5 U.S.C. 552(B)(6).

- Acworth, GA, USA

2013 Ford F-150 XLT V6 ecoboost displaying shuttering and violent shaking upon 1st start up of the day and sometimes 2nd start up of the day if it's been a while between starts in St louis, mo. Feels like an old vehicle start up not anything like a brand new $42K truck should sound like. My wife also states it shutters while driving on the highway sometimes. I took to dealer (sunset Ford) and let them keep it overnight so they would start and check in the morning. Of course they had the nerve to say it did not do anything when they started it. Well after reading various posts about how they seem to not want to fix the product they sell I was upset. So when I went up there I had the service manager go with me outside to start it later that day after they already started it and it did the same thing I took it in there for. It's like they didn't even do their job properly. He hemmed and hawed and stated to bring it back up for another service apt later in the week. I have yet to do so B/C my time is too valuable for them to give me the run around but it still always shutters and shakes sometimes violently upon start up. Don't know what to do other than trade it back in for another truck brand for someone else to deal with. It's a shame B/C I really like Ford my grandfather retired from there. I guess like every other company they just keep getting leaner and meaner. Good for their pocket books I guess but not for the everyday man or woman.

- House Springs, MO, USA

While driving North on I-95 in Georgia at 65 mph, I attempted to accelerate. The truck began to shake violently, lose power, and the check engine light illuminated. The weather at the time was 70 degrees with moderate rain. I had been driving for approximately one hour at the time of the incident. I had to pull over to the emergency lane and shut off the motor. The engine restarted ok. I did not attempt any more hard accelerations. I had no more stall problems. I took the truck to the dealer where they found a misfire code, but had no explanation or fix to prevent the problem from happening again. This is an ecoboost vehicle.

- Jacksonville, FL, USA

I went to pass a car and the engine started to cut out and lose power. I did finally pass the car and the engine was erratic for at least 2 more miles. Engine light was flashing the entire time but then stopped and everything was okay. It had just stopped raining at the time and was humid, temp 75. It happened during full throttle. I have contacted my local Ford dealership and they are looking into it.

- Star, NC, USA

While on I95 in Virginia, after traveling for about an hour with the cruise control on in an intermittent rain, I attempted to accelerate to pass another vehicle. I depressed the accelerator and the truck started to shake and buck. The check engine light started flashing and I was not able to accelerate. Any attempt to do so caused the truck to jerk and shake. As I moved to the right lane to get to the shoulder, the light stopped flashing and the truck behaved normally. I could not replicate the incident since I did not drive at a constant speed again for any period of time remaining in the trip. This occurred in a 2013 Ford F150 XLT supercrew with a 3.5L eco boost engine.

- Warrenton, VA, USA

The contact owns 2013 Ford F150. The contact stated that the vehicle stalled without warning. The vehicle was taken to the dealer for diagnosis but they were unable to duplicate the problem. The vehicle was not repaired and the manufacturer was notified. The approximate failure mileage was 2,000.

- Humble, TX, USA

2013 F150 XLT w/ ecoboost 42K cost, had to accelerate to get out of the way of a potential accident and the engine stalled started missing barely missed totaling the truck had to plow in to a grass median to keep from being hit. I was able to restart the truck and get it home and have not driven it since. I am so disappointed. If this is not a safety issue I don't know would be, this is scary stuff.

- Mcqueeney, TX, USA

Stuttering, loss of power, bad fuel mileage.

- Clinton, TN, USA

Ecoboost V6 3.5L. Driving about 3 hours 70-75 mph with last hour in rain. Had to pass cars on two occasions after the rain. Both times upon acceleration, car shuddered violently, lost speed and engine light was flashing. Both times had to pull over and turn off car, then restart to get engine to work. First time engine light turned off. Second time engine light stayed on solid until I got it to dealership. They replaced the intercooler and cac shield. Has not occurred since with 6 months driving including several tests of acceleration. However, I have not tried it in the rain, and I'm seeing reports of moisture accumulation as the issue.

- Fort Worth, TX, USA

My Ford F150 XLT, 4X4 stalls and almost shuts down at times. The truck is brand new. This truck has the ecoboost V6 engine. The conditions were that the road was wet. Unhappy because I paid a tremendous amount of money for this vehicle.

- Maysville, GA, USA

While driving on the interstate with cruise control set approximately at 70mph, I stepped on the gas to accelerate past a vehicle. The truck did not respond but decelerated and the steering wheel began to shake. The check engine light flashed. I continued to drive and with only slight pressure to the gas to maintain speed. After approximately 5-10 seconds the vehicle regained power. The incident happened a second time, same conditions same results. The Ford dealer says its a known problem with parts back ordered. This seems unacceptable if its a know problem. Someone can get in a serious accident at highway speeds if they pulled out in fast moving traffic expecting acceleration to be there.

- Summerville, SC, USA

The contact owns a 2013 Ford F-150. The contact stated that while driving 60 mph, the vehicle suddenly decelerated and independently engaged into limp safe mode. The contact mentioned that while attempting to accelerate, the vehicle started to shake violently as the check engine warning lamp illuminated. The vehicle was taken to the dealer. The technician was unable to diagnose the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure and current mileage was 1,300.

- Cincinnati, OH, USA

Upon hard acceleration to pass on highway the truck lost power check engine light continually flashed and shuttered when attempted to give truck any acceleration. After a few minutes of driving on shoulder to get to safe exit vehicle seemed to reset and regain all functions and power.

- Ozark, MO, USA