This is on the ecoboost f150. i was driving during a rain and had been around 70 miles. the weather was rainy. i went to pass a farm tractor on a 2 lane road and the vehicle stuttered and had no power to pass. i had to take evasive action and get back into my lane where there vehicle continued to sputter for approximately another 2 minutes. i took truck to ford and they replaced a converter and cooler. last wednesday under similar conditions, the same thing happened again on a vacation trip. oncoming traffic had to evade me as i tried to get back into my lane. it has been less than 10, 000 miles since last attempted repair was performed by dealer. obviously the repair did not work and now i am left with a vehicle with an obvious design defect that ford doesn't know how to correct. under different circumstances, this could be a serious safety issue. *tr
We were merging onto the highway outside of st. louis mo and when the accelerator was fully depressed the engine started to misfire and power was reduced. a blinking cel was displaying on the dashboard. it seemed as though the turbo system was not adding any extra charge to the ambient air. there was a pronounced vibration to the vehicle that seemed to originate from the engine/drive train. luckily there as not a lot of traffic at the time and our poor acceleration did not result in an accident. my solution was to manually select the gears and drive at much higher rpm. this smoothed the misfire and we had an adequate amount of power to keep up with traffic. after about 10 minutes everything smoothed out and the misfire was gone. truck behavior returned to normal. the weather that day was a pleasant 60 degrees and sunny. the previous day we drove from central ohio to st. louis through much rain and fog. since we were on vacation and away from home we did not take the truck to a dealer to be serviced. the problem has not occurred since then. there was one previous occurrence at a previous date. i don't know exactly when it was. we were traveling home to vt from ohio. we had been driving for many hours, mostly on highway/cruise control driving. we had just gotten off the interstate highway and were on state highway. i went to pass a slower vehicle in my lane and upon depressing the accelerator the engine seemed to misfire (rpm went up but power delivery fell flat). i stepped off the gas pedal and slowly pressed a second time and this time the truck responded as expected. there was no cel this time. each of these incidents occurred with my entire family in the vehicle. we were not very happy about it and did not feel safe at the time. *tr
Yesterday i went to pass a truck that made an illegal turn, and had to hit the gas hard to get out of the way, only did it for about 2 seconds, than when i let off the gas, the engine kept running at high speed for about another 3 seconds? and my foot was not on the pedal at that time. *tr
My truck is equipped with the ecoboost 3.5l engine. twice now i have attempted to accelerate and had the truck lose power and shake violently, creating a very dangerous situation. the first time was attempting to pass another vehicle. weather conditions were warm (75 degrees f) with light rain. i pulled out to pass and attempted to accelerate when the truck suddenly acted as if the gas was shut off. it then began to shake and shudder violently as if the rear axel was being ripped from beneath it. i was able to fall back behind the vehicle i was attempting to pass, out of the way of oncoming traffic, and pull to the side of the road. after shutting off and restarting the truck, it seemed to run normal. the dealership service tech inspected the truck and stated it is a problem ford is aware of (in wet conditions), but has no fixes. the second time i was attempting to enter the interstate from a rest stop into a single lane construction zone. the weather was cool (45 degrees f), dry and sunny. i attempted to accelerate to enter the highway and the truck acted as it did on the first instance. i was forced to pull off of the lane between two large construction pylons in order to avoid being struck by a tractor/trailer. the supplied dates, mileage and speed were from the most recent incident. *tr
Poor gas mileage. window sticker says 23 mpg highway, best i ever got is 16 mpg,with cruise set at 65 mph on flat level highway. had at dealer, 4 times, they updated computer, changed turbo intercooler and they still cant improve my fuel economy. around town i get 12 mpg. bad turbo lag when pulling out low power, dealer said its how turbos work. doors rattle, speakers crackle, rear end springs make a creaking sound. 4 wheel drive makes a loud growling, sounds like gears are not meshed right. i would not recommend a new f-150 to any one. nothing but trips to the dealer and let downs. *tr
Fuel filler no longer closes. will not keep dust water and debris out. broken hinge. was told at dealership it is common on the capless fuel filler models. *tr
Engine, the turbocharged v-6 ecoboost, stalled out (tried to die and shook and and shuddered like nothing i have ever experienced in 50 years of driving) when attempting to pass a truck on the interstate and again when pulling away from an exit stop sign after traveling in cold rain. glad i was on a freeway vice two lane road. takes about 15 to 20 seconds for the engine to get power back. also it did the same thing 3 weeks earlier, on same cross country trip, in northern idaho when i attempted to accelerate to freeway speed after driving in wet snow for about 1/2 hour. really felt unsafe. i reported it to ford. they acknowledged there is a problem but they have not done anything to fix my truck after i reported the near disastrous drivability issue - like can't be trusted to adequately perform in rain and i live in the pacific northwest. *tt
At about 30 mph while accelerating the engine will cut out and lose power. it will chug, cutting in and out for a few seconds before picking up. this also happens randomly when going up an incline. we have been put in a few dangerous situations by this before but thankfully nothing serious has happened. took it to ford dealer where we bought it and they told us nothing was wrong. we took it back 2 more times and still was told there is nothing wrong. i called today to get the truck back in and they say there is no record of us taking the truck in the previous 3 times. *tr
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).*tr
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. *tt
Tl* the contact owned a 2011 ford f-150. the contact stated that while driving approximately 35 mph, the vehicle hesitated to accelerate. the failure recurred intermittently at different speeds. the vehicle was towed to the dealer for diagnosis three different times. the technician was unable to diagnose the failure. additionally, the contact stated that the fuel gauge would not display accurate fuel readings. the vehicle was taken to the dealer for diagnosis. the fuel sensor was replaced. the vehicle was not repaired. the vin was not available. the approximate failure mileage was 4,000. *tr
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. *tt
Under hard acceleration into traffic or when passing, vehicle will suddenly lose power and go into a "limp mode." this condition is thought to occur because of engine misfire and several factors have been identified that can cause this in the ecoboost 3.5l v6. the dealer has replaced ignition coils with no success in correcting this issue. my service manager shared with me that ford engineering is well aware of the issue and has yet to come up with a solution to correct it. in the meantime, my family is placed at risk of an accident because there is no way to predict when the engine will suddenly lose power when you need it most for passing or merging situations. this becomes even worse when pulling a trailer. nhtsa should demand that ford immediately recall and repair these vehicles, or replace them until an appropriate solution is found to remedy the misfire condition and resultant lost of power. *tr
Driving on new years day, i was traveling and needed to accelerate onto an expressway. as i pressed on the throttle pedal my ford f150 2011 seemed to lose power for a second or two before regaining power again. this was the first time i can recall, but it happens each time i press the throttle all the way down for acceleration. i have learned that my f150 is not reliable enough to attempt to pull out unless traffic is completely cleared, or i have several car lengths of distance. *tr