I made a left turn from a traffic light stop, as I was accelerating on a moderate rate, the engine "took off" (unintended acceleration) and immediately accelerated to ~50+MPH. I switched transmission into neutral and applied the brakes and slowed down to the speed limit, ~35 MPH. I checked to make sure the accelerator pedal was not stuck on the floor mat (it wasn't). I reengaged the transmission and the acceleration started immediately again. This unintended acceleration occurred three times in a stretch of about 2 miles or so, until I had a clear, safe place to pull over. The check engine light did not come on, at least not that I could notice. After I stopped the truck and started up again things were fine. I tried to "recreate" the situation by suddenly accelerating, but to no avail. I have scheduled an appointment with the dealer. The vehicle is a 2011 ford f-150 pickup with 3.5l ecoboost engine.
2011 Ford F-150 engine complaints
Page 18 of 18: complaints 491 to 511 of 511, newest first, as owners wrote them.
The ecoboost version that I own has an apparently "known" problem within ford where condensation builds up because of the turbocharger intercooler to the point that when you need to accelerate heavily to avoid a problem, to pass someone, or simply to get on a busy street or freeway, the truck sucks all that water into the engine and it completely misfires similar to just running out of gas. When this happens it can easily cause and almost has caused an accident. This happened first at about 700 miles and has happened numerous times since especially in high humidity. I keep hearing about "some fix is being considered by ford engineering" and that the problem is in the ford oasis problem reporting system number [xxx] I believe but 7 months later I am still waiting for ford to step up. This problem can and I expect will get people killed and that's just sad. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).
2011 f-150 3.5l ecoboost loss of power when accelerating from 50-60 MPH to pass a vehicle. Vehicle bogs down and I was nearly rear ended twice in one weekend. Many are having this problem, I have taken the truck in for service and ford cannot find a fix. This is either a fueling issue or a condensation issue in the turbo system, this problem only occurs in high humidity or rainy weather and usually has a misfire feeling to it. Ford is not pushing the issue and there are going to be accidents before they do anything. Personally I would not like to be killed in my new truck. The engine light has came on and threw codes p0300, p0304, p0305, po306, which are all misfires, but when the truck is shut off and turned back on no codes are stored. This needs to be fixed before someone gets hurt.
The truck has developed a rough idle that causes the truck to feel as if it is missing. Along with the idle the fuel economy has dropped 4-5 mpg. I have had the truck in 3 times and 2 different dealers to try to resolve the issue. While in service diagnosics the techs where able to get the truck to misfire twice but they felt that it was not enough to be signifcant. The first dealership suggested I trade the truck in on another because they did not have a fix. The second dealer stated that they contacted ford and was told that their is a known issue but ford does not have a fix for the issue and does not have a timeline for a adaquate fix. The issue has been apparent now for 6 months with no end in sight. I have been told that I will just have to deal with it.
Drove 200 miles with cruise set at 73 MPH towing an enclosed trailer, damp cool conditions. Pulled off freeway to fuel up. While accelerating on the on ramp to get back on the freeway, vehicle stumbled, lost all power to the wheels, truck would not accelerate. Removed foot from accelerator for a few seconds and pressed down again, this time the truck accelerated. Happened again 2 days later while driving through fog. Vehicle is a 2011 f-150 equipped with the ecoboost engine. Intercooler condensation is the suspected culprit.
Driving down a two lane road in the early evening, I was 3 or 4 cars back in a long line of over a dozen vehicles. We were all stuck behind one slow moving vehicle. A chance came up to pass and I pulled into the other lane. After stepping on the throttle the truck developed a misfire. It lost nearly all power and began decelerating. In the time since pulling out to pass, a semi truck had popped up over an upcoming hill. By this point, the vehicles previously behind me had moved forward and filled in my place in line. I began evaluating my options. I was now moving slower than the traffic in the right lane, but there weren't any openings to move back over. I examined the shoulder on the left side of the road looking for safe places to pull over. There were none in the immediate vicinity. After several very tense seconds, the vehicle suddenly regained power. I had just enough time to accelerate to an opening in the right lane and get back over. Likely cause: condensation in the charge air cooler ingested into the engine upon a call for power. Since the first incident this has occurred several more times. Every single time has been after cruising for some period at less than half throttle, followed by a sudden acceleration in humid or rainy conditions. Ford claims to be aware of the problem and working on a fix. However after waiting for over 8 months since my first incident I'm starting to have my doubts. I have heard reports from numerous other people saying this exact same thing has happened to them. Some of those are over a year old and are still waiting on a fix from ford. Being aware of this problem I try not to put myself into a situation that will require the sudden application of power. However I know no matter how well you plan, eventually you find yourself in a bad situation. I just hope when that occurs it isn't a humid or rainy day.
While entering a highway via an on-ramp doing about approximately 45 miles per hour I attempted hard acceleration to pick up speed and merge in to traffic that was doing approximately 65-70 miles per hour. When I depressed the throttle the vehicle did not accelerate, but it started to hesitate and shake. The check engine light came on and the vehicle would not go over 40 miles per hour. This almost caused an accident situation as I expected the vehicle to accelerate when it did not. I was then forced to pull over to the shoulder and shut the vehicle off. After restarting the vehicle the cel had cleared and the vehicle was operating normally. No code was stored in the PCM to indicate what the issue was. This happened several more times since the first incident. Once while towing a 4000lb boat/trailer which also almost caused a severe accident. Ford has found nothing wrong with the vehicle and concludes there is nothing they can do since no codes were stored. I will note that after receiving tsb 12-2-10 the vehicle will still exhibit the same symptoms described above, but now the check engine light does not come on. Vehicle will stall, go in to "limp mode" with no indication that anything is wrong. Only resolution is to turn the vehicle off and back on to clear the status. This creates dangerous situations when on a highway. Completely unacceptable.
After 100 miles I noticed a vibration or miss while truck idles at stops. Since that time every person in the truck notices it at every stoplight or stop sign. I took truck in for service and they ran all computer test on vehicle and they informed me that there is nothing wrong that is just how vehicle runs. I ask the service rep how that can be and he advised me that there have been multiple complaints by other people and that there are no updates or recalls on it.if it gets worse to bring back and will see if they can do anything about it but at this time ford is not looking into the situation. Also on a side note chrome tow hooks are rusting and there answer to that is to clean them with steel wool what a way to be treated after making a 40,000.00 dollar purchase. One very pissed ford owner [xxx] information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).
While traveling at 40 MPH, I accelerated to enter a highway, the engine accelerated and then bogged going into what is called "limp mode". The engine began to shake and misfire causing my vehicle to decelerate rapidly. This action nearly caused a rear end collision with oncoming traffic. On march 26, 2012 I was traveling at 65 MPH on interstate 95 when I attempted to accelerate to pass another vehicle. The engine immediately began bog and misfire causing the vehicle to decelerate rapidly. Again, nearly causing a rear end collision. The vehicle has been taken back to ford for a diagnosis, ford engineers are apparently aware of this problem.
Vehicle bogs while moderately accelerating onto the interstate while pulling a trailer with a load under 3,000 pounds. It seems as if the engine is stuck on the rev limiter. There is minimal power available and it is very dangerous. I did not buy a powerful truck in order to experience this.
I have a 2011 f150 with the 3.5 ecoboost. I have had numerous rough 3-4 upshifts since the truck was new. Brought the truck to dealer twice and was told they could not duplicate the rough shift. I have also had the engine stumble on me twice will trying to pass. I have read others are having similar problems and am hoping ford will have a fix before someone gets killed in a wreck.
Driving on the interstate at 75 MPH. I attempted to pass a car by giving the truck wide open throttle. The truck responded by down shifting several gears, and the RPM's increase to around 4000. Once this happens, the engine starts to bog down/misfire and the truck will not accelerate. The check engine light starts to flash. I let off the gas and the truck continues to misfire for several more minutes before clearing up on its own. This has happened on 4 or 5 different occasions.
Vehicle lost power and shook violently during highway on ramp acceleration. This has occurred multiple times and placed me and my family in the direct path of oncoming traffic with no ability to accelerate.
Upon acceleration my truck shifted roughly sputtered and shut down, then the wrench showed up and I had to drift to side of road. This has happened 3 times. They have done a computer update 1st time, no luck, replaced a loose pin,no luck, replaced computer , no luck, replaced crank shaft sensor, no luck. This is a serious safety event. Two times my truck stalled and shut off while merging onto an extremely busy highway. I have children that ride in my truck and I do not feel safe. I have opened a case with ford but all they want to do is keep fixing it. 44,000 truck , transmission stinks and I want a refund. Someone is going to be seriously hurt or die due to this problem.
New 2011 ecoboost v-6 f150 super-crew auto 6 speed transmission with the engine in manual shift 1st gear cold engine the accelerator sticks at what ever RPM's you are running and will start going faster without foot on pedal I have had to date 10 run aways and ford won't or can't fix it. The only way to stop it is to slam on the brakes and turn key off.....if your in traffic it could cause a serious accident. It also may cause serious damage to transmission and engine...
My complaint is that ford has a governor on the engine that only allows the vehicle to reach approximately 89 MPH. Yet the speedometer indicates 120 MPH and no indications in the owners manual that the engine has a governor and top speed is 89 MPH. I believe ford is making a misrepresentation and false advertising to the public. Ford has stated to me the reason for this is to not exceed tire rating speed. However my truck came with 113 MPH speed rated tires. Ford also admits that there is no indication or mention of the governed speed. I don't have a need to go beyond the posted speed limit or want to go 120mph. That being said , I was driving on interstate 81 posted speed 70 I was doing about 73-75 MPH in the right lane, along side of me in the left lane was a dodge truck with a trailer doing approximately 75-80 MPH and a tractor trailer behind him on his bumper. The tractor trailer abruptly pulled behind me and slightly ahead another tractor trailer started to pull from the shoulder of the road onto the highway. My choices - slam on the brakes and hope a loaded tractor trailer 4' off my bumper can also stop, accelerate and pull in front of the dodge truck. I chose the latter and just imagine my surprise just as I cleared the dodge and started to pull into the lane in front of the dodge my truck engine stalled at 89 MPH. I don't know what else I could have done in this situation, but not knowing that ford had the engine governed almost caused an accident. Probability of this same thing happening again, I don't know. But the point of this is that ford should be required to recall all these vehicles and remove the governor or change the speedometer to reflect the top speed as 89mph. Not let the consumer believe they are buying a vehicle that will do 120mph but conceal the fact that it will do only 89mph. After all it's not ford's place to enforce speed limits.
Vehicle "shudders" or "bucks" slightly under light acceleration from 55 MPH on up. For a $45,000 vehicle and no fix yet this is totally unacceptable.
Tl* the contact owns a 2011 ford f-150. The contact stated that the vehicle was parked for approximately 40 minutes when the horn sounded and the contact noticed flames coming from under the hood near the engine. The entire vehicle became engulfed in flames. There were no injuries associated with the fire. The police and the fire department were at the aid of the contact. The fire and police both advised him that they were unable to determine what caused the fire. The manufacturer was later contacted and offered no assistance. The failure and the current mileages were approximately 7,000.
Tl* the contact owns a 2011 ford f-150. The contact stated that the vehicle would stall sporadically while attempting to accelerate. The contact took the vehicle to the dealer for a diagnostic test but the dealer was unable to generate any failure codes from the diagnostic machine. The vehicle was not repaired. The failure mileage was 7,200.
Trying to accelerate onto the highway the engine misfired, started with excessive vibration and started decelerating. The engine would not recover and had to coast to shoulder and turn off engine. During deceleration, tried to add throttle several times through all speed ranges, but vibration was excessive and no acceleration was achieved.
From a dead stop I accelerated to turn into her driveway the engine hesitated and stumbled it sounded like you had thrown a handful of marbles inside the intake the engine made a funny noise then died after getting it restarted the check engine light came on upon returning the vehicle to the dealership I found out it had melted the intake manifold sensors and part of the throttle body away ford has no idea what caused this the truck is also been plagued with electrical problems. Apparently it came real close to an engine fire the truck is still broke down at the dealership since august 5, 2011.
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