When accelerating and approaching freeway speed, engine stumbled, preventing acceleration. I let off the accelerator and problem didn't occur again. I reported this to the dealer, but they stated that since the vehicle did not register a code there was nothing they could do. I have since had this happen again on july 17 & 18, 2015, but this time the engine light did come on, so I'm assuming it did register a code. On july 17, it was a clear dry day, the following day it happened again, but it was raining all day. Once on the freeway, whenever I stepped on the accelerator, even when at freeway speed, the engine would stumble and barely accelerate. I've contacted the dealer and scheduled an inspection for july 29, 2015. The vehicle currently has 47000 miles. I've talked to ford customer service and I am being told this is not a warranty repair, but I am seeing a number of service bulletins being issued describing this exact problem. I believe this is a defect in design and should be covered under the manufacturers warranty.
2011 Ford F-150 fuel system complaints
Page 3 of 5: complaints 41 to 70 of 117, newest first, as owners wrote them.
Vehicle lost acceleration when trying to pass. Engine light came on and engine started to shake. I had to turn vehicle off and restart. This now occurs anytime I attempt to accelerate...
I was driving at highway speed and tried to accelerate quickly to pass someone and the truck had major hesitation and shuddering. Continues to do this anytime you try to rapidly accelerate.
Tl* the contact owns a 2011 ford f-150. The contact stated that fuel fumes emitted into the vehicle. After inspecting the vehicle, the contact found a leak and noticed fuel spewing out of the catalytic converter. The dealer was contacted and made the contact aware that the vehicle was no longer under warranty. The manufacturer was made aware of the failure. The failure mileage was 23,000.
Attempting to accelerate to pass a slower vehicle on the highway. Truck began shuddering and immediately decelerated to 50mph. Would not respond for approximately 75 yards, then would not accelerate over 60mph. Two vehicles (one of those vehicles was a tractor-trailer) following had to take evasive action to avoid rear-end collision. Exited the highway, put the vehicle in park. No warning lights were engaged. Weather was sunny and warm. Now vehicle is shifting very hard with a delayed engagement between 55-60mph.
Same as previously reported by many others: misfire upon acceleration up a hill; reported to dealer who found no error codes. Happened again soon after, this time activating engine warning light. Dealer replaced cylinder coil; next day, same type of misfire occurrence. Very unsafe situation, costing me lots of time and money. In addition, this eccoboost, as I have reported to ford since it was new, has never achieved even close to rated mpg, only averaging 14 mpg or 40% less than advertised. Vehicle now back at livermore ford, where technician was asked by service dept to drive unit home hooked into computer to see if problem can be diagnosed. This is an unacceptable and unsafe situation. Not happy.
While towing my camper at 60 MPH up an incline my 5.0l f150 began to lose power, as I increased pressure on the accelerator the power to the vehicle decreased even more. The service engine light came on and I limped up the hill at a whopping 20mph on the interstate. Once on the downgrade the vehicle came back up to speed and the service engine light went off. The truck continued to have power issues and a knocking from the motor when I was climbing hills. I took the vehicle to the ford garage and they told me there were no codes to tell them what was wrong. The vehicle still has the apparent miss and knocking sound at certain RPM's and now has an issue starting for the first time of the day. I again took it to the ford garage when the starting issue was happening and they told me again that the vehicle still had no codes to explain this problem. I tried all of the easy fixes but the vehicle still has the same starting and power loss issues and ford can not tell me what is going on with my vehicle. My best guess is a catalytic converter issue, but I can do nothing about it until I know for sure.
The ecoboost engine ford introduced into the f150 (and other vehicles) in 2011 seems to be having common and widespread problems, including my vehicle. I first reported this issue to the dealer with about 30,000 miles and now again at 63,000 miles. The safety issue is revealed under any acceleration "event" such as highway merging, passing, towing etc. Under acceleration the vehicle "chokes" and will not accelerate as the driver & passengers experience the vehicle stalling, shuddering or bucking. This is often described as the vehicle going into "limp mode" operating on fewer than all cylinders. The problems appear to stem from dysfunctional intercooler operation on this twin turbo engine. There are two different scenarios described in f150 blogs. One, most common, is that the cooling of the air via the intercooler causes condensation to accumulate inside the air intake. When the driver accelerates, the increase in air volume draws the moisture into the fuel delivery system and causes the engine to misfire, which the driver experiences as an engine stall, bucking or shuddering. The second scenario reported is that there is an overheating of air into the fuel deliver system which causes early detonation of the fuel mixture in the cylinders causing roughly the same symptoms. My vehicle repairs are costing me almost $700.00 - which would be more if I did not have an extended warranty. The dealer is replacing 6 spark plugs, 4 coil boots that have overheated and cracked, installing a new intercooler shield - none of which they are standing by as a dealer covered expense. Ford needs to be held accountable for this defective design for both consumer safety and financial reasons. Someone may be killed trying to pass or enter a highway as their vehicle suddenly looses power.
There is a problem with the engine misfiring at moderate to hard acceleration. This really bothers me. As I have talked with ford mechanics I have been told that ford has no fix for this problem. From what I have read and studied, this is a problem with condensation in the intercooler making its way to he injectors. Once you put your foot on the gas pedal to accelerate you experience a sometimes violent stutter and the vehicle not accelerating but instead sounding like it's going to explode. I have also heard this happens when its humid outside. Regardless, one day I'm going to need to accelerate away or from something and the truck is going to fail, causing me to get hit or killed. I have found fixes to the problems including a full race intercooler, plugs and wires, however I don't think I should have to spend over $1000 for something ford released knowing it wasn't ready, or up to par. I've owned my vehicle for over a year now and its 0% better even using top octane fuel. Please help...
I was attempting to accelerate hard to merge into traffic onto interstate highway. When I pushed pedal to floor, the vehicle immediately slowed as if a governor had kicked in. Fortunately, I had room on shoulder to not get hit, but had to wait and pump pedal twice before it began to accelerate again. I have not tried to replicate the problem. I had an identical problem 3 years ago in another ecoboost ford f150 that nearly killed me. I attempted to pass another vehicle and realized that I needed hard acceleration and the vehicle immediately slowed. There was no where to go, but fortunately my fellow motorists realized I had a problem and let me back into my lane without a multi-vehicle crash. I asked my dealer about that then, and was told that never had been reported. I immediately traded that truck for the one I have now that day.
While attempting to pass a slower vehicle on a two lane road, my truck lost all power and the check engine light began blinking. I was in the on-coming travel lane adjacent to the vehicle I was passing when the incident occurred. The incident nearly caused an accident as the vehicle I was passing slowed down when I lost power an I was unable to immediately get over. I coasted with a rough running engine to the shoulder and shut off the engine. When I restarted it a few minutes later it ran a little rough and the check engine light remained on. Research shows that this is a know issue for this make model with the ecoboost engine. The ford dealership, while having a tsb in place for the issue, did not notify me of the issue and will not cover the cost of the recommended service under either the power-train warranty or my ford extended warranty (bumper-to-bumper has expired). This is a huge safety issue and this should be a recall from ford to fix these issues and they apparently will not take the initiative to do so on their own. The incident occurred in southwestern missouri on a day in which it had been raining off and on.
On february 13, 2014, my ford 2011 f-150 ecoboost began to show signs of limited throttle response coupled with a drastic reduction in power output and moderate to severe engine vibration. These symptoms occurred and were most severe under heavy engine load, while traveling uphill, high outside air temperature and with the air conditioner on. General locations: mojave high desert (joshua tree, ca) and the greater palm springs, ca area. Weather conditions were generally dry with low humidity. On february 15, 2014 the symptoms described above were so violent that the check engine came on (flashing) and I pulled off the road for my own safety. I shut off the engine, allowed it to rest' and then turned the engine back on. The symptoms did not disappear completely, but they were reduced and the check engine light was no longer illuminated. On february 20, 2014 I brought my truck to yucca valley ford to have the problem diagnosed. Mileage at the time of the service was 68,382 miles. A diagnosis was performed and it was determined that the engine was misfiring on the number 1 cylinder due to worn spark plugs. All 6 spark plugs were replaced and the symptoms disappeared. The truck ran fine until approximately june, 2014. The symptoms slowly began to reoccur and by early august, had fully returned. On august 8, 2014, while traveling at freeway speeds, up a steep grade, with external air temperatures in the low 100 degrees, low humidity, and the air conditioner on, the truck nearly lost all power, began to misfire and vibrate violently, and the check engine light began to flash intermittently. Upon reaching the top of the grade and the load on the engine reduced, the symptoms were reduced. The truck was again brought to the yucca yalley ford service center on saturday august 9, 2014 where it is currently awaiting diagnosis.
Water from the cac was ingested into the engine causing a misfire. This is the 8th time it has happened to me. I have had all tsb's completed by ford and the issue still persists. The ecoboost engines are unsafe. This loss of power while merging has causes me to narrowly escape accidents 2 out of the 8 incidents. I noticed that the federal safety agency closed an investigation into the ecoboost issues earlier this year. I'm suggesting that the federal safety agency re-open that investigation. The tsb's are not fixing these issues and it is only a matter if time before someone is seriously injured. Please contact me with any questions.
Vehicle stalls out like it is starving for fuel when you need to accelerate. It has stalled out when passing other vehicles and when entering heavy traffic on interstates. As of july 31, 2014, the truck has been back to the dealership at least 4 times for this problem. However, I continue to have the problem.
As I was merging onto the highway, I had to accelerate to avoid a semi who was approaching in the right lane. I hard accelerated, but the truck started shaking and the check engine light began flashing. I had lost all acceleration and was forced to put my flashers on and merge to the break-down lane to avoid being run completely off the highway. The truck shook violently while in 6th gear and I had to manually shift to 5th gear to stop the truck from vibrating apart. Less than 10 minutes later (while driving down the highway in 5th gear) the check engine light turned off and the truck was able to be shifted back into 6th without any vibration. This lack of acceleration is extremely dangerous and has happened more times than I can count. Above was only an explanation of the last occurrence. The truck has been serviced (under warranty) where issue was discussed with ford, but they were unable to "reproduce" the problem...
As I was merging onto highway 694 north, I had to accelerate because of a semi approaching me from behind, I gave the truck full throttle but the truck started shaking and the engine felt like it quit or just had no power left. The truck struggled to reach 55mph, and within seconds I almost got rear-ended and almost ran off the highway, do to the fact that my truck had no power. After I merged onto the highway the truck shook violently for about 3 miles while my check engine light was flashing. During this time it felt as though my truck had lost 50% of its power.
I was merging into traffic after picking up my daughter from daycare. I pressed down on the accelerator firmly to gain speed to get into traffic. My truck stalled with a pinging noise coming from the engine and an uncharacteristic black smoke pouring out of the exhaust pipe. Oncoming traffic had to brake to avoid hitting my truck on my daughters side. The truck recovered but only gradually picked up speed with very little power. It was a low constant acceleration. This is the 4th time this has happened with my truck but this time it endangered my daughter so I feel that I need to speak out. This needs to be addressed before my 1.5 year old daughter or someone else gets hurt due to faulty equipment.
I was driving down my street and braked to pull into my driveway, after in my driveway I touched the accelerator (to get up the slight grade) and my truck went wide open throttle!! I mashed on the brake but the truck continued to accelerate uncontrollably and crashed into my brick home. Even after impact and me continuing to apply full brake it was still wide open throttle and burning out. I finally came to my senses and shut the ignition off and the stopped it. I had the truck towed to my local dealer as recommended by ford customer care rep. The dealership ran a diagnostics check and found nothing as well as tried to get it to duplicate the problem with no luck. I had a state trooper certified in downloading event recorder data do such to my truck. The data shows exactly what happened..but does not differentiate between the accelerator being pushed vs.the accelerator position as indicated. However, it does show service brake applied and continual acceleration at the same time which I can prove was not done by me! I have pictures of abrasions to my right shin and knee from the steering column and dash..my right foot was fully applied on the brake pedal causing the abrasions at impact due to being directly in line with the steering column. My left leg had zero abrasions...since to the left of the steering column. If I was to be responsible for the data shown in the down load I would of had to have my left foot on the brake and thus sustaining abrasions to that leg. It is also impossible to use the right foot to brake and accelerate simultaneously to achieve the acceleration indicated...ones leg has to be cocked to the side and out of line of the steering column. Everything on my pickup is oem....including the floor mats...which contrary to some beliefs that could be the cause. My truck has sat at the dealership untouched since they looked at it.
I am glad that we were not in a situation that we could have gotten killed because of the throttle problem. The first time we were driving down the road at 45 MPH suddenly the accelerator would not respond, the engine was still running at a rough idle. We had to coast to the shoulder. Stopped turned off the truck, it was able to restart and the accelerator was working again. We drove to the local ford dealer. At the ford dealer they could not identify the problem. The second time this happened was when we were going 55 MPH. Coasted to shoulder of the road and I was able to restart the truck and drove very carefully to the ford dealer. This time they were able to get a code reading of the problem. The code called for a recalibration. This was done. Drove the truck home thinking that it was repaired. The third time this happened was on the interstate traveling 75mph. Luckily we were in the right lane and was able to coast to the shoulder. Repeated same procedure as above. Returned to the ford dealer. This time they read the code(p2112) and replaced the throttle body and motor assembly. This problem with the throttle could have very easily caused a deadly crash. I feel that my wife and are very lucky as we could have been in a very serious accident.
While driving down highway tried to accelerate to pass truck vehicle lost power and check engine light came on. Pulled off road and shut the vehicle down and then restarted vehicle. Later loss of power on any incline that I approached.
While trying to pass a vehicle on the highway my truck started to sputter and loose power, the check engine light came on for a few seconds and went off. This problem is happening every day now under all conditions. There are numerous complaints on this problem and no real resolutions.
While traveling down the road and the need to accelerate to pass a much slower vehicle my truck lost all power and began shuddering very bad. With oncoming traffic approaching quickly I had to step on the brakes rather hard and quick to avoid a accident. What would have possibly happened if I was towing a legal but heavy load? Ford has a known problem with the coils on the ecoboost and this truly needs to be addressed. This is a extremely serious traffic safety when you loose all power and the severity of the shudder that also occurs.
I have had numerous instances of the engine of my f-150 eco -boost shutting down while driving. The engine will run fine for hours and then it will begin to sputter and crap out and die. The 1st time this happened I was traveling 65 miles on hour on the freeway when it just started crapping out like it was out of gas. It barely ran until I could get off the freeway. I have taken it to my local ford dealer 5 times for the same issue. I have had it stop running on at least 10 occasions. Only 1 time did the dealer get a code which indicated the high pressure fuel pump was failing. Replaced that. Three days later the same thing happens again in the exact same way. It will run fine and then all of a sudden it decides that it wants to crap out and start sputtering. I was told by the dealer when this happens turn the engine off, take the key out of the ignition, wait a few minutes then put the key in the ignition and try to start. I have had to wait as long as a few minutes to over an hour for the computer to reboot and allow the truck to restart. This has happened in some very remote locations where it would have required that I hike as much as 20 miles to see a living soul again to find help. I believe that this is a very serious safety problem that will eventually lead in deaths if a recall is not performed to find the source of the problem. There are to many complaints on this site to ignore that it is not a problem although ford told me they did not have similar issues with any other trucks. Now I see on this site that perhaps they are choosing ignorance over safety.
Towing a 9500# fifth wheel trailer on interstate complete loss of power shuddering and inability to accelerate.
While driving my f150, v6 ecoboost engine, down the interstate, when I try to accelerate,the truck to pass vehicles and or move out of the way of on coming traffic, the engine gives me nothing and shutters, feels like it is missing. I originally started to feel this in 2013, took it to the dealership, cause I thought it could be a transmission issue, and the service rep only asked if a light came on and if none has come on, probably won't show anything. I am outside of my warranty now and the truck is shuttering very badly when I try to accelerate anywhere, besides my gas mileage has dropped significantly, which now can become a epa issue. I have read about a lot of issues concerning this year ford with same engine with no outcomes. I have been told, once again that if I don't have a check engine light, then it probably wont show a code. I don't know where else to turn but to at least have a complaint filed where there is an issue with the 2011 ford f150 v-6 ecoboost engine.
I was traveling on the interstate where I live and was trying to get up to speed to merge with traffic and when I accelerated my truck lost power and began to sputter and shake, and would not get up to speed, and the check engine light came on, when I took to the local dealer where I purchased it I was told number 2cylinder and number 4 cylinder was mis firing, that I needed new coil packs so I had them replaced and I am still having the same problem.
Truck started to shake violently when accelerating. Felt as if the wheels were loose or the u joint for the drive shaft was going bad. Had to let off the gas. Has been ongoing from the time I purchased the vehicle to present time.
2011 f150 ecoboost at 57k miles mid july 2013 experienced violent shuddering lose of power pulling up hill at 60 MPH. Engine light came on. Taken to dealership where repair was listed as #2 coil pack costed $277. Now jan 2014 six months and 13k miles later same event. Check engine light came on twice while driving to work. Used on board diagnosic tool I had purchased and truck coded p0303 as #3 cylinder misfire obviously the #3 coil pack has gone bad at 70k miles.
Coasting at low speed around 7mph I attempted to accelerate, instantly as I put my foot on the gas pedal, now not even making it to 10mph, the 3.5l ecoboost engine made an incredibly loud and hard bang and continued to grow louder and shake more violently. I came to a stop on the side of the road I shut down the truck to find oil spilling from the passenger side of the block. I had the truck towed to my local dealership and they found that two connecting rods had broke and destroyed the block. They is no concern from anyone at ford about how this could have happened.
Truck has a 36 gallon gas tank. Fuel gauge does not go to full when filled. While driving fuel gauge goes to empty and message center comes on low fuel 10 miles to empty. Tank still has 20 gallons or more in tank. When filling with gas after this happens there is a high pressure release of gas fumes from the filler neck when pump nozzle is placed in the neck. An audible whoosh sound is made and the build up of gas fumes is consistent with every time the gauge and message center think the tank is empty. When starting the truck after this occurrence it takes 2-3 tries before the engine will start. The engine malfunction indicator lamp will come on for 3-20 minutes before going off. The ford vehicle health report reads "engine, transmission, amp; emissions. The truck has been serviced 8 times with no corrective results. My major concern is the build up of fumes and the possibility of fire. It appears that ford has known of this problem with trucks having 36 gallon tanks since 2008 based on comments from other owners when I googled my problem. To this date ford does not appear to have a solution to the problem.
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