2012 Ford F-150: hesitation when accelerating

Filed Mar 27, 2025 · Transmission · 200,000 miles · LA

The contact owns a 2012 Ford F-150. The contact stated that while driving from a complete stop and while driving at various speeds, the vehicle hesitated while depressing the accelerator pedal. The contact stated that the transmission unexpectedly downshifted while driving at various speeds. Additionally, the contact stated that while driving at various speeds, the vehicle stalled. The contact was able to pull into a parking lot. The contact stated that upon adding fuel to the vehicle, the vehicle restarted and was drivable. The power train warning light was illuminated. The vehicle was taken to the dealer, where it was diagnosed with transmission lead frame failure. The vehicle was not repaired. The manufacturer was notified of the failure and informed the contact that the vehicle was not covered because Ford Campaign Number: 19N01 had expired. The manufacturer referred the contact to the federal safety agency Hotline for assistance. The failure mileage was approximately 200,000.

Filed Mar 26, 2025 · Engine, Transmission · 175,000 miles · LA

The contact owns a 2012 Ford F-150. The contact stated while driving 40-50 MPH, the vehicle hesitated and jerked. The contact depressed the accelerator pedal, but the vehicle hesitated and lost motive power. The transmission slipped and downshifted to first gear. The contact was able to move over to the side of the road. The wrench warning light and the check engine warning light was illuminated. The contact turned off the vehicle and waited for a while. The vehicle was restarted and returned to normal functionality; however, the vehicle failed to get up to speed. The vehicle was taken to the dealer where it was diagnosed that the lead frame needed to be replaced. The vehicle was not repaired. The contact stated that the vehicle had been taken to the dealer weeks prior the failure for service. The contact was provided with the manufacturer's recall number: 19N01 and an unknown update was performed on the vehicle. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The failure mileage was 175,000.

Filed Jul 5, 2024 · Transmission · 145,000 miles · PA

The contact owns a 2012 Ford F-150. The contact stated that while attempting to accelerate from and stationary position, the transmission malfunctioned, and the vehicle hesitated while accelerating. The vehicle was taken to the local mechanic who diagnosed that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer and local dealer were notified of the failure, but no assistance was offered. The failure mileage was 145,000.

Filed Mar 8, 2024 · Transmission · 75,000 miles · PA

The contact owns a 2012 Ford F-150. The contact stated that while driving at an undisclosed speed, the vehicle suddenly downshifted and hesitated while depressing the accelerator pedal. There was no warning light illuminated. The contact would restart the vehicle to reset the vehicle. The vehicle was taken to a local dealer where a diagnostic test was performed. The mechanic linked the failure to the federal safety agency Campaign Number: 19V075000 (Power Train) but stated that the vehicle was not included in the recall. The manufacturer was also notified of the failure and the contact was referred to the NTHSA Hotline for assistance. The vehicle was not repaired. The failure mileage was approximately 75,000.

Filed Feb 19, 2020 · Engine, Transmission · GA

Transmission shift jerk or hesitation when hitting the gas for some reason. This vehicle only have 41,000 miles. Not sure why it's doing it.

Filed Dec 17, 2019 · Acceleration, Engine · 51,000 miles · LA

Tl* the contact owns a 2012 ford f-150. While driving 75 MPH in fog, the contact attempted to pass a tractor trailer. The vehicle hesitated, failed to accelerate, and decelerated to 60 MPH. In addition, the check engine warning indicator illuminated, the rpms fluctuated between 2000-4000, and the gear shifted from fourth to sixth gear. The local dealer and manufacturer were not contacted. The failure mileage was 51,000.

Filed Dec 12, 2017 · Transmission · 60,000 miles · TX

Truck lost power while starting from a stop light; engine hesitated and regained/lost power about 3 times before getting back to normal. This was inside the city on a street, not the highway.

Filed Nov 27, 2017 · Engine, Transmission · 51,251 miles · MN

Tl* the contact owns a 2012 ford f-150. While driving 65 MPH, the vehicle hesitated to accelerate and lost power. The check engine indicator immediately illuminated. The contact managed to pull the vehicle over to the shoulder of the highway and the check engine indicator dimmed briefly. The contact called the nearest ford dealer and was informed that since the check engine indicator was no longer illuminated, he should continue to drive the vehicle. The vehicle was taken to larry h. Miller ford lakewood, 11595 w 6th ave, lakewood, co 80215, (720) 643-1545) and repaired. The vehicle was taken back to the dealer and they added an air deflector per technical service bulletin: 13-08-01. The contact was concerned that the manufacturer did not issue a recall. The manufacturer was not notified of the failure. The failure mileage was 51,251.

Filed Apr 13, 2017 · Engine, Fuel system · 40,000 miles · MI

My 2012 f150 ecoboost 3.5 studders severely, hesitates, and will not accelerate when trying to pass on the highway. The dealer has bulletins addressing this. I have been told multiple repairs that now are not under warranty including cac cooler deflector, spark plugs, catalytic converter, cam phasers, timing belt, and many others. The truck started this problem and may now require the turbos be replaced. This is a very common problem with this motor and ford is well aware of the issue. This defect should be covered by ford.

Filed Oct 27, 2016 · Engine · CA

Tl* the contact owns a 2013 ford f-150. The contact stated that the engine had sludge, the vehicle had a strong hesitation, and stalled more than twice. The vehicle was taken to a dealer and repair shop more than once for diagnostic testing. The manufacturer was notified of the failure. The failure mileage was not available.

Filed Aug 10, 2016 · Transmission · 90,000 miles · MS

Tl* the contact owns a 2012 ford f-150. While driving 5 MPH, the accelerator pedal was depressed, but vehicle hesitated before it accelerated and the rpms increased. The failure recurred on numerous occasions. The vehicle was not diagnosed nor repaired. The manufacturer was notified of the failure. The contact was aware of the federal safety agency campaign number: 16v248000 (power train); however, the VIN was not included. The failure mileage was 90,000. Updated 09/27/16*lj

Filed May 3, 2016 · Engine, Fuel system · 60,000 miles · AL

When on cruise control going 60-70 MPH, and you pull out to pass and step on the gas, the ecoboost "hesitates" and will not gain speed, but loose speed. I can only stop this by downshifting, then reengaging the gas. This can be a very dangerous situation. This has happened about 10 times over the last 4 years.