Ecoboost engine has a terrible miss at idle and blows black smoke at start up. Fuel mileage is also bad due to rich fuel conditions. Ford has replaced many parts including injectors and plugs that were carboned up. Now Ford refuses to do anything else until a new calibration program is released mid August 2013. The truck has spent a total of 6 weeks in the shop and is only 10 months old. Bottom line...Ford refuses to honor the warranty. They cant fix it and they wont buy it back.

- Comfort, TX, USA

While driving on interstate I attempted to pass a slower vehicle. After moving over and accelerating - the truck buckled and stalled! I was almost rear ended by an 18 wheeler at 65 mph! this was very close to being a serious accident involving multiple vehicles. Please investigate and resolve this issue as Ford doesn't seem to be concerned about it. Not to mention I took it in for Ford to repair the problem and they refused to make the repairs as the vehicle did not show a trouble code. I looked online and there is a tsb on this vehicle by Ford for the repair but Ford won't make the repair. Not to mention since then the fuel mileage has dropped drastically since the event. This has happened three times now. I am very worried about an accident with this issue, not to mention it going out of warranty and I should not have to foot the bill. This is a design flaw and there are lawsuits all over the internet for this same reason. This is our family vehicle and it losing power is a huge safety issue due to tractor trailers not being able to slow down in time when this happens on the interstate. When the vehicle lost power it drops the vehicle speed to 40 mph. Not a safe speed for contested interstates. I bought this vehicle in April and spent 40,000 dollars on a truck that's very unsafe but not even dependable. This vehicle has a 3.5L ecoboost engine with an automatic transmission and it also shudders at various speeds with a hard clunking sound during gear changes. Thank you.

- Mcdonough , GA, USA

Attempting to pass on interstate, vehicle bogged down until I took my foot off accelerator, at this time my speed had declined from 65 mph to 50 mph. During the past 2 weeks this has occurred other times. This has never occurred since I have owned this vehicle but I am concerned. Once thing that I noticed that this has happened on rainy days. I was called by a friend that bought a similar vehicle make model equipment and motor and mentioned that he was aware of a problem made aware to him by a friend that works as a Ford service manager. I have scheduled an appointment with my local Ford dealer. They seemed indifferent as to this being a potential problem. I am submitting this complaint because if this is a common problem that is actually happening, Ford needs to step up and make this known to other owners to prevent something bad happening involving lives.

- Sweetwater, TX, USA

Almost got hit trying to pass a car. When I pulled out to pass and tried to accelerate the motor started missing badly. Ford supposedly did not have a fix until early this year. My eco bust now has 70,000 miles and Ford wants me to pay for part of the repair. They have never contacted me to inform me of the problem.

- Mount Vernon, IL, USA

While attempting to accelerate from a stop sign turning right my 2012 Ford F150 platinum 4X4 ecoboost stalled and would not accelerate for a few seconds. I thought the truck shifted into neutral but that was not the case. This has happened several times within the last 3 months and is getting more frequent.

- Colleyville, TX, USA

On trip from louisville ky. To atlanta, ga in the rain, truck displayed the shuddering stall caused by condensation in the charged air cooler which gets ingested into engine causing motor to go into limp mode, truck has had two of the three tsb's performed as this is the seventh incident of the same problem since new. When truck goes into limp mode at highway speeds you are immediately at risk from rear end collision.

- Tyrone, GA, USA

I had the tsb (for known surging issue) performed on my truck (2012 super crew 4X4) in may at 25K miles. Everything seemed better, until... this past Saturday, I left the house at 5am for a 7.5 hour/ 350 mile drive from home. It was raining continuously for the first two hours. Sometimes hard rain, but it didn't stop for the first 2 hours. I was driving back country roads with mostly 55 mph limits and rolling hills. Given the weather, type of roads, time of day, etc. I drove gently for the trip, never put my foot in it. Then, when going up a steeper hill that required more throttle than the others to keep my speed up, the truck started hesitating. A lot. More than it ever had before the tsb. And then, just after the hesitation began, something extra occurred that had never happened to it before. The truck started to shudder. This shuddering was akin to driving over road shoulder rumble strips on steroids. As soon as I let off the gas, the shuddering stopped. I gently pushed the pedal, shuddering was back and just as bad. Let off again. It stopped. Pushed the pedal again. It came back. Pushed the throttle once more, and it had stopped. I slowly pushed further on the throttle and it didn't do it any longer. By this time I was down to about 35-40 mph going up the hill. So I pushed down the pedal almost to the floor. The truck kicked down and accelerated with only slight moments of hesitation. Not once did the check engine light come on.. thus, I had a textbook case of exactly what the tsb was supposed to solve, but didn't.

- Elizabethtown, KY, USA

This write up is for a 2012 Ford F-150 truck with the 3.5L ecoboost V-6 installed. Jan, 2013-while driving on I-24E, I was pulling out from the rest stop, just North West of exit 1. I went to pass a 18 wheeler and my truck came "unglued". it practically died in the passing lane when I pressed the gas peddle. It shuddered so hard; I didn't think I would be able to get off of the road before it died. It was missing and shuddering like crazy. I pulled off exit 1, shut the truck down and restarted. It ran ok without that same thing happening on the way home. I had a pretty descent "miss" in 6th gear, running down the interstate at 75mph. Something very strange happened here. It was the first issue I've had with my truck. Although I've noticed recently the mpg is down by 2.0 mpg or more for the last three weeks, and this from refueling at different locations, and the same driving style. Ford applied the tsb to reprogram the PCM/tcm to latest level, installed a deflector shield on the intercooler and possibly replace the drivers side catalytic converter if needed. July, 2013- this weekend while driving on I-65N, I had the same issue happen. The truck now has 17,000 miles on it. I've had the vehicle back into my local Ford dealer four times for this issue. The vehicle exhibits this issue when it's rainy and has been driven in the rain for several (50 or more) miles. In heavy traffic this is a very dangerous issue. The vehicle goes into some type of safe mode and will barely limp off the road. If this issue were to occur while crossing a four lane hwy, and sputtered one could be seriously injured or injure someone else.

- Clarksville, TN, USA

Traveling on the interstate, little to no uphill or downhill grade, speed approximately 55, attempted to pass a tractor-trailer. Pressed hard on the accelerator pedal, and started the pass. Halfway thru the pass, passing speed 65-70 mph, my truck lost all power and started shaking violently. I backed off the accelerator, and pulled back in behind the tractor-trailer, then off to the right shoulder. I shut the engine off, opened the hood, expecting to see something bad. No visible signs of anything wrong. Started the engine, drove the rest of the way home, with no other mis-haps. However, the same thing has happened twice more, the most recent being just a few days ago, 6-10-13. Each time this has happened, it has been during an attempt to pass a slower vehicle, during a hard acceleration. I'm typically a very conservative driver, and bought this truck with this engine for both fuel economy and power to pull a trailer. On the first and third occurrence, I was on the interstate, with traffic going the same direction. The second time it happened, I was on a slight upgrade on a 2-lane road, and attempted to pass a much slower vehicle. There was traffic coming from the other direction, but there was ample time and distance to make a safe pass, as the truck in front of me was very slow. Again, halfway thru the passing attempt, I lost power, and had to back behind the truck in front of me. Fortunately, there was sufficient room for the oncoming traffic to move over to avoid the collision. I have talked to my dealer about this, and they were going to research the issue before servicing it. However, I recently saw a report on this issue on the local news station, and realized that my problem is not unique.

- New Market, MD, USA

I was merging on the on ramp to obtain highway speed I stepped on the gas when all of the sudden the truck started to shake really bad. I tried to step on the gas to accelerate but there was no throttle response to the engine as the truck continued to lose speed. Every time I tried to step on the gas the truck would shake even worse. I pulled over to the side of the road so I would not cause an accident. This is not the first time I have experience this shudder in the truck.

- Chestertown, MD, USA

During any hard acceleration such as merging into traffic, the truck stalls and goes into a mode of missing and engine stall. This has happened since I have owned the truck and only happens during a hard acceleration. I have had a catalytic converter replaced and the tech at the dealer told me it was know defect with the design of some kind of moisture pump. He said that Ford would only fix it when you got to the fourth converter replacement. This is a hazard during merging into traffic.

- Castle Hyne, NC, USA

The truck started to shudder and there was a loss of acceleration and power.

- Sparta, NJ, USA

Traveling at 60 + / - mph and attempted to pass another vehicle under normal conditions. Engine lost power on acceleration and seemed to sputter. This is strange as the gas was not "punched" or anything outside of normal passing acceleration. Initially I thought I may be out of gas or something but this was not the case. I have noted power loss two other times but did not think anything of it as the engine returned to normal once I backed off the gas. The one difference this time is the engine made a very rough vibration which caused others in the truck to ask if I was having engine trouble.

- Richmond, TX, USA

While passing another car the throttle would not respond with full power.

- Deleon Springs, FL, USA

Cpsc#I1290626A. 2012 Ford F150. Consumer stated there was gas fumes in the cab of the truck. The consumer stated he took the vehicle to the repair shop twice.

- Kirksville, MO, USA