2011 Ford F-150: misfire or rough idle

Filed Jul 26, 2023 · Engine · AL

The contact owns a 2011 Ford F-150. The contact stated that while driving for an extended period in humid weather, condensation would build up around the intercooler. The moisture around the intercooler then got sucked into engine combustion chamber resulting in engine misfire. There was no warning light illuminated. The vehicle was taken to the dealer and the contact was informed that the timing chain needed to be replaced. The manufacturer was also notified of the failure. The vehicle was not repaired. The failure mileage was unknown.

Filed May 11, 2020 · Electrical, Engine · 105,000 miles · KY

I purchased my 2011 f150 ecoboost in used condition in 2014. The primary use for my truck is around town errands and hauling light loads. For sometime now I have had issues, like many others have complained as well, during acceleration at 45+MPH the engine loses it's power, shudders and stalls. Once there is a reduction in the amount of throttle, it takes a few minutes to regain "normal" driving conditions. For example, my family and I were coming home from florida on the parkway, in july and with no abnormal weather conditions, and as I was ascending a grade about 75 miles per hour and a semi truck behind me, I gave the truck more throttle and it began to shudder violently, a subtle backfire, and lost power and could not regain throttle response. I quickly moved the truck into the emergency lane and had let the truck return to a normal idle, took a few minutes, before almost getting into a serious collision with the semi-truck. Over the past years I have just dealt with the issue and have taken it to mechanics and scanned the truck with no error codes or issues, until just recently. The mechanic scanned it and it showed misfires on #4 and #6. He replaced the coil and plug hoping that would be the cure, but with no luck it did not solve the issue. I'm reluctant to drop another $250.00 to replace the rest of the coils, but I don't know what else to do. I do not have disposable income and the truck is paid for, I and can't afford to get another vehicle. I enjoy my f150 and plan on keeping it until the wheels fall off. I have read post after post and video's that there are many people experiencing the same issues, but it seems no one is willing to step forward and make the complaint. I want this issue addressed and I hope ford will resolve the issue before someone is seriously injured or a life is taken over this problem.

Filed May 22, 2019 · Engine, Transmission · 96,000 miles · MI

Tl* the contact owns a 2011 ford f-150. While driving 55 MPH, the vehicle shifted into first gear on its own. The contact coasted the vehicle over to the side of the road and powered off the engine. The vehicle was restarted and was able to drive normally. The vehicle was taken to bill marsh ford (located at 408 w mile rd, kalkaska, mi 49646, (231) 258-9192) where the transmission was upgraded. The vehicle was repaired. On another occasion, the engine performed as if it were misfiring. The vehicle was taken to an independent mechanic where it was diagnosed that the engine and timing chain needed to be replaced. The vehicle was not repaired. After leaving the independent mechanic and while at a stop sign, the vehicle stalled and the check engine warning indicator illuminated. The vehicle failed to start and was towed to the contact's residence. The vehicle was later taken to another independent mechanic where it was diagnosed that the engine needed to be replaced. The vehicle was not repaired. The contact stated that he replaced the timing chain on his own, but not the engine. The vehicle was later taken to bill marsh ford gaylord (located at 1928 otsego ave, gaylord, mi 49735, (989) 732-6737) where it was diagnosed that the engine valve on the left bank failed and needed to be replaced. The vehicle was not repaired due to the repair fees and still remained at the dealer. The manufacturer was notified of the failure and did not assist. The contact was referred to the federal safety agency. The approximate failure mileage was 96,000.

Filed Mar 27, 2019 · Engine · 112,500 miles · TN

When entering interstate in rain engine misfired truck slowed. Ford engineers modified boost intake charged me $274.80 to correct design flaw.

Filed Mar 27, 2019 · Engine, Fuel system · 95,000 miles · WA

Vehicle runs rough and throws a check engine light. When the engine is warm it runs smoother. After trouble shooting possible problems, it was determined to probably be a sticky valve. It is my understanding, there was a recall on this particular issue. I want to know if this truck was serviced and the issue corrected while owned by the original owner. If yes, it is broken again.

Filed Feb 7, 2019 · Acceleration, Engine · 69,000 miles · AL

Truck will have severe intermittent stumble/misfiring on acceleration from 45mph+ in humid, wet or damp conditions. The vehicle shudders violently, bogs down, and check engine light flashes eventually becoming a solid engine light. This involves the engine shuddering when there is acceleration at highway speeds; this is very dangerous when trying to pass vehicles at highway speeds. Have my spark plugs and coils replaced after the following happened in damp and wet weather conditions. Make years seem to involve 2011-14 ecoboost trucks. From thousands of ford forum posts, the trucks have an intercooler condensation problem that is causing poor performance and spark plugs/coils to fail early. Water and oil vapor/residue condensation is being sucked into the engine. People have had to take it upon themselves to find a solution by drilling a 1/16' hole in the low point of the intercooler driver's side to drain oil/water condensation/residue or install a $400-$500 oil catch can separator which ford should be offering to owners with this problem. Ford should own this problem and issue an appropriate fix like the oil catch can installation or confirm with its owners that it is ok to drill a weep hole in the intercooler. Not the cheap fixes I have seen like tsb 13-8-1.

Filed Jun 11, 2018 · Engine · 94,000 miles · MI

My truck is having the issues outlined in the federal safety agency investgation pe13018. In some cases in rainy or humid conditions the engine misfires (sometimes without any codes) and loses power when accelerating. The engine sometimes than won't shift out of a lower gear until it is shut off and restarted. The ford tsb (12-10-19) and related q&a provided to the federal safety agency has a fix but because the dealership has not repeated the issues (it hasn't been humid out and they aren't doing it under highway or open throttle speeds). We have given dates, experiences and codes to the dealership (including ones in the tsb). But as they can't recreate it in the service bay, they won't make the fix.

Filed Apr 27, 2018 · Acceleration · 57,000 miles · CA

As I push hard on the gas pedal to accelerate, the engine misfires with a "clunk" feel and sound eld/heard in the cab. The engine continues for a bit and then happens again, and again until I release the gas pedal. This has nearly caused two accidents as I went to accelerate on the highway to 1) get out of the way of a driver who was ignorantly moving into my lane and 2) went to accelerate around an obstacle in the roadway and had to cut into oncoming traffic.

Filed Jan 10, 2018 · Engine · 120,000 miles · NE

Misfire at high speeds. Causing engine shake and unable to accelerate. Due to this problem it is a huge risk of being rear ended because of speed drop. Huge safety concern . Spark plug and coil change only helps for a month at a time. This is in the ecoboost model

Filed Jan 9, 2018 · Engine · 88,000 miles · LA

While trying to accelerate at higher speeds the vehicle shakes and appears to misfire. When this happens the vehicle struggles to accelerate and black smoke appears from the exhaust. This occurs mostly while trying to pass another vehicle. The check engine light appeared in the beginning and the code referenced a problem with one of the ignition coils which was subsequently changed but the problem still existed without any codes appearing.

Filed Oct 20, 2017 · Engine, Fuel system · 60 miles · KS

My name is [xxx], I own a 2011 f150 ecoboost. Over the past 4 years I have encountered and same issue with the engine misfiring due to moisture getting in the intake. Everyone dealership personal I've spoken with has confirmed that it's a known issue with that year and model and there is no permanent fix. However when the engine continuously misfires it calls for service on the truck and replacement of certain parts. I am filling this complaint because I do not believe this right that ford should be allowed to ignore a known issue that has almost gotten myself and family into a serious accident on the highway. As well cost me money out of pocket to correct. I would like to see someone hold ford accountable before this issue gets someone killed. Information redacted pursuant to the freedom of information act (foia), 5 u.s.c. 552(b)(6).

Filed Aug 23, 2017 · Driver assistance, Steering · 83,200 miles · MA

Took vehicle 2011 f-100 to ford service center for service engine light diagnosis. Ford dealer informed me vehicle was misfiring and needed plugs and coils. Dealer then informed me that the vehicle also needs steering rack replacement as codes reveal a rack failure. Service advance track light was on. Quoted $1800.00 for steering rack replacement. Vehicle now has 83200 miles on it. This light has been coming on and off for at least the last 2 years. Dealer says total failure is a certainty in time. After research on internet I find that ford has identified this problem on vehicles in my model year and has done nothing about it . Safety concern is that steering could freeze while driving and result in accident.