really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
43,357 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2011 Ford F-150 engine problems

engine problem

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2011 Ford F-150 Owner Comments (Page 2 of 6)

« Read the previous 20 complaints

problem #86

Dec 152014

F-150 4WD 6-cyl

  • 68,000 miles


Lost power during acceleration, engine light came on instrument cluster. Truck had a severe miss. Drove about 20 miles in 5th gear and engine cleared up and light went off. Truck then missed during accelerations all the way home.

- Vinita, OK, USA

problem #85

Oct 112011

F-150 4WD 6-cyl

  • 1,000 miles
Since new, this vehicle has had an issue with a loss of power when accelerating hard. The latest incident, this past October, occurred at approximately 80000 miles. Plugs were bad prematurely and found that it was caused by water build up in a cac for the turbo chargers and there was a tsb. I was passing a car and lost power almost creating an accident. This time, fortunately, a light stayed on so they could diagnose the issue. The dealer did an update per the tsb but Ford refused to pay for the update due to the miles even though this issue has occurred numerous times before the warranty had expired. I am disappointed that the NHTSA did not make the recall mandatory in their previous investigation as I believe water being injected into an engine causing a power loss at a time power is called upon is dangerous.

- Franklin, WI, USA

problem #84

Dec 012014


  • 70,000 miles
I was driving on the highway at 60 mph and my rear end locked up and it almost had a major accident. I searched on line for recalls and on the 2011S they have been having problems with the transmission. I contacted Ford and they said that there are no recalls at this time. I found 5 recalls on 2011S F150:1 recall id 68928 electrical system,2 recall id 90589 exterior lighting,3 recall id 84274 structure body,4 recall id 91590 power train automatic transmission,5 recall id 90588 power train automatic transmission control module. The dealership checked my truck and told me that the valve body wiring harness is bad and the repair will cost around $850 to repair. The repair shop said that they have been having problems with the 2011 models but no recalls. This is a safety issue and its serious. If I had been driving 75 mph and my rear locked up on me, it would have not been good and it could have caused a major pile up including injury to myself and others and possible. This problem needs to be looked at and investigated before something happens. I appreciate your time. Thanks

- Cedar Hill, TX, USA

problem #83

Sep 042014

F-150 6-cyl

  • 91,125 miles


I have a Ford F150 ecoboost. This vehicle is very defective due to loss of power when driving on highway trying to overpass other vehicles..vehicle looses power due to moisture or humidity that enters the intercooler. It also makes the cylinders to misfire and the turbo. Due to that engine turns on and I have to power to my vehicle while driving which can cause an accident due to a sudden slow in the middle of the highway.. I have three kids and I wouldn't want any accidents happening due to this.. Ford needs to do something about this vehicles I lost my money on a worthless piece of you know.im very disappointed because I've spend so much money on repairs are not working.

- PeŅItas, TX, USA

problem #82

Sep 112014


  • 76,000 miles
I was accelerating up around 45 mph and the vehicle just died to a rough idle. Car behind had to swerve to miss me. I was told this is a throttle control board and is a common problem in Ford vehicles. Please tell Ford to recall this problem or they will not recall this part until someone dies it looks like.

- Blaine, MN, USA

problem #81

Aug 262014

F-150 6-cyl

  • 60,000 miles
I do not have the exact dates as to when the first incident took place. I was entering the E way merging into traffic when I tried to accelerate the vehicles lost power. I was fortunate not to be hit in the back by traffic I had to steer quickly to the side of the road. I have taken this vehicle and two others we own in on multiple occasions for this problem. The different fixes they have tried have not worked and yet I continue to be charged for these fixes. I feel if it is a known problem Ford should be taking care of the problem not charging me to try and figure it out. After reading online that I am not the only one having these problems as I have been told I felt it is important to file a complaint before someone is killed.

- Lansing, MI, USA

problem #80

Aug 132014

F-150 6-cyl

  • 45,000 miles


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.

- Jonesboro, AR, USA

problem #79

Feb 122013

F-150 6-cyl

  • 38,000 miles
My 2011 ecoboost F150 would sputter, shake and chug as I do a hard acceleration entering a highway or pass a vehicle. 4 times I have had my truck for service with the last 12 months for the same exact problem. My engine light will flash several times and then it will stay on till I take the vehicle in for service. 2 times the dealer has told me the problem is a turbo cooler issue and want to charge me $200 for some cheap lick and stick plastic air deflector. The other 2 times they have said I have a bad distribution wire and plug. First was on cylinder 3 and second time on cylinder 1. every time this has happened on a hard acceleration, its been during heavy traffic and I have had to pull of the road to avoid an accident. I have to now be very cautious when accelerating as I feel this truck is an accident waiting to happen. I hope someone can get this recalled as I know there is a lot of these trucks out there with the same problem.

- Grand Rapids, MI, USA

problem #78

Oct 102011

F-150 6-cyl

  • 10,150 miles
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.

- Pollock, LA, USA

problem #77

Jul 112014

F-150 6-cyl

  • 47,000 miles
This is a Ford ecoboost truck that is turbocharged. During a heavy rain on interstate 95 I tried to accelerate from about 5 mph and the truck lost power and barely moved. After about 30 seconds the truck regained power and moved ahead. There were 2 other instances on this trip also during rain.. the second time the check engine light came on and stayed on. Upon returning home I searched the internet and found out I am not alone in this. There have been 3 tsb's to effect a repair. I made an appointment with the dealer. The engine code was a misfire on cylinder #6. tsb 13-08-01 was applied and I was billed $255.66. This problem needs a recall and repairs made before someone is badly hurt. I was nearly rear ended on the interstate. The problem is high humidity condenses in the intercooler (cac) or charge air cooler as Ford calls it. Then a sudden acceleration causes the condensed water to enter the engine grounding out the spark plugs on the left side of the engine causing a loss of power and stall. This has also been known to damage the left catalytic converter. Why must I pay to fix a design flaw? Ford needs to recall all of these trucks and repair them. This is not a mileage based problem but is inherent in all of them. During the right conditions it will happen.

- Loxahatchee, FL, USA

problem #76

Jul 212014

F-150 6-cyl

  • 72,349 miles


While attempting to accelerate and pass slower traffic on the highway, my 2011 F150 (4X4, ecoboost) truck lost almost all engine power, the check engine light started to blink, and the entire truck shook violently. Due to the truck's sudden deceleration without brake lights signaling it, oncoming traffic (including a large tractor/trailer) approached from behind rapidly and everyone had to brake abruptly to avoid a collision. I turned on my hazard lights, pulled the truck to the right shoulder and sat there for a few minutes while I called work to inform them that I would likely have to wait for a tow truck and be delayed. During that call, the engine light stopped blinking and the truck began running normally again. I reentered the highway when traffic was clear and the truck proceeded to run normally until I reached my workplace (roughly 2-3 more miles on the highway and about 5 miles through the city). A less severe instance of this occurred months before. In that case, there was a short power lag upon attempted acceleration, the check engine light blinked 2-3 times and then stopped blinking and the truck did not shake at all. The whole episode disappeared as quickly as it appeared after letting off the accelerator for a second or two. I believed it was a one-off thing. After today's much more severe episode, it is clearly not a one-off and obviously has the potential to cause an unsafe situation. Conditions (in central pa) at the time of today's occurrence (7:45am): Temp: 69F, humidity: 96%, overcast (not raining), wind: 0mph, truck speed: About 65mph, A/C: on auto set to 72F, load: Driver w/ personal belongings (no extra load).

- Mechanicsburg, PA, USA

problem #75

Jun 062014

F-150 6-cyl

  • 43,000 miles
I experienced lack of acceleration, sputtering, shaking from the vehicle while trying to pass on a 2 lane rural highway. This is second event of this nature and the first since having Ford make certain repairs to engine to correct this issue. I have the V-6 eco boost engine. I am unhappy that this engine encounters this problem and it could result in a wreck with loss of life. This should be taken seriously!

- Franklin, TN, USA

problem #74

May 222014


  • 25,439 miles
The contact owns a 2011 Ford 150. The contact stated that the brake pedal and accelerator pedal were too close together. As a result, the contact was constantly depressing both pedals at the same time and almost caused a crash. The manufacturer was not made aware of the defect. The vehicle was not repaired. The failure and current mileage was 25,439. Updated 10/02/14

- Scotia, NY, USA

problem #73

May 312013

F-150 6-cyl

  • 20,000 miles
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.

- North Platte, NE, USA

problem #72

May 092014

F-150 6-cyl

  • 88,900 miles
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.

- Ralls, TX, USA

problem #71

Apr 232014

F-150 6-cyl

  • 48,750 miles
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.

- Taber, AA, USA

problem #70

Apr 142014

F-150 6-cyl

  • 43,980 miles
I accelerated hard on a highway entrance ramp and the engine started to stutter to the point I thought it might stall out. I let off the gas and accelerated again more slowly with no problem. Thinking it was a one off I accelerated hard again and again the car stuttered. I went easy for a couple days and then again accelerated hard a few days later with the same result. I got online and realized I wasn't the only one having issues with this engine. On 4/18/14 I took my truck to the dealership(landers Ford, collierville, tn) and reported the problem. They were familiar with it and said there was a fix. This fix included installing a moisture deflector and reprogramming the computer. It was performed and I left the dealership. Yesterday, 4/23/14, it happened again. I am planning on going back to the dealership tomorrow.

- Collierville, TN, USA

problem #69

Feb 052013

F-150 6-cyl

  • 40,881 miles
When attempting to pass a slower moving vehicle, I moved into the left pass lane and pushed on the gas, the truck began to shudder violently, lose power, and the check engine light came on. I took it to the dealership where I bought it and they did the intercooler fix. After that the problem continued. Check engine light came on, took back to dealership, they told me it was a spark plug, replaced it, on the drive home same problem, engine shudders violently, loses power, goes into limp mode, and check engine light either flashes or goes solid. I have had this problem since the day I purchased the truck new from the dealer.

- Mercer Island, WA, USA

problem #68

Apr 092014


  • 20,000 miles
The contact owns a 2011 Ford F-150. The contact stated that the vehicle would accelerate rapidly and without warning. The vehicle was taken to the dealer where the technician was unable to diagnose the problem. The manufacturer was made aware of the failure. The failure mileage was 20,000 and the current mileage was 36,000.

- Logan, WV, USA

problem #67

Mar 252014

F-150 8-cyl

  • 63,000 miles
The subject pick up truck was southbound on I405 between orange ave and cherry ave in long beach California. The vehicle was in the fast lane or the lane adjacent to the fast lane. Speed at the time of the incident was approximately 65 mph and the cruise control was engaged. Traffic was moderate with all lanes moving at freeway speed. Without warning, and simultaneously with the sound of a skidding tire, the vehicle pulled violently and abruptly to the right, out of control, and crossed all traffic lanes of the freeway and the shoulder of the freeway. Just prior to departing the roadway, enough control was regained to avoid hitting a freeway directional sign in the landscape median. The truck entered the landscape median and came to rest facing South, parallel to the freeway. Approximately 10 minutes passed before the California highway patrol responded to the accident site. The officer said he was responding to an accident that was reported. The vehicle was towed to a local Ford dealer for investigation. Five to ten minutes prior to the loss of control, the driver noticed a fluctuation in the speedometer from approximately 65 mph to 50 mph with no change in vehicle speed, engine RPM or performance. Several weeks prior to the accident, the driver experienced an event at moderate speed which was described as feeling though the vehicle was hit from behind at slow speed although there was no one behind the truck. Simultaneously, the speedometer and tachometer both failed to 0 and the dashboard display went blank. Shortly thereafter, a "wrench" icon appeared momentarily on the display. The driver continued driving to a gas station and refueled. When the engine was started after refueling, all instruments appeared normal with no icons present. No icons re-appeared at any time up to and including the date of the accident. Updated 06/16/14

- Villa Park, CA, USA

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