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really awful
Crashes / Fires:
3 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
43,504 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 6 of 6)

« Read the previous 20 complaints

problem #5

Oct 092012

F-150 6-cyl

  • 11,820 miles


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.

- Leesburg, GA, USA

problem #4

Oct 012011


  • 3,000 miles
The contact owns a 2011 Ford F-150. The contact stated that while driving 65 mph, he attempted to accelerate and the vehicle decelerated to 10-15 mph. The contact stated that the vehicle performed as if the engine was not receiving enough fuel. The vehicle slowly began to accelerate up to speed. The vehicle was taken to the dealer, however no failure codes were found. The manufacturer was notified and they offered no assistance. The vehicle had not been repaired. The failure mileage was 3,000 and the current mileage was 41,000.

- North Lauderdale, FL, USA

problem #3

Sep 102011

F-150 6-cyl

  • 9,500 miles
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.

- Concord, NC, USA

problem #2

Dec 012011

F-150 6-cyl

  • miles
F150 ecoboost while going down a slight grade at about 50 mph in drive the transmission suddenly shifted down a couple of gears thereby causing the engine to rev up to over 3,500 RPM. After several seconds the transmission shifted back up one step at a time to the 6th gear. This has happened at least twice on different occasions. Another anomaly has occurred several times. While slowing down slightly the transmission suddenly 'clunks' and it feels like something has run into the back of the truck. It's like a hard shift into a higher gear, however the transmission appears to be 6th and the speed is around 60 mph..

- Princeton, MO, USA

problem #1

Nov 212011


  • 5,536 miles
The contact owns a 2011 Ford F-150. The contact stated that while driving 70 mph, he depressed the accelerator pedal and the vehicle stalled without warning. The vehicle was taken to an authorized dealer, who was unable to duplicate the failure. The manufacturer was not made aware of the failure. The vehicle was not repaired. The failure mileage was 5,536 and the current mileage was 11,800.

- Santee, SC, USA

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