Tl* the contact owns a 2012 ford f-150. The contact stated that while driving approximately 60 MPH, the vehicle failed to respond to acceleration attempts. The engine rpms rapidly increased during the malfunction. The failure recurred twice. The vehicle was taken to an authorized dealer however, they were unable to locate the problem. The manufacturer was not notified of the defect. The approximate failure mileage was 18,000.
2012 Ford F-150 acceleration complaints
Page 7 of 8: complaints 161 to 190 of 194, newest first, as owners wrote them.
Driving in the rain. Tried to merge on highway. Truck started missing and bucking. I had the truck floored and it was loosing speed. I had to pull over. Check engine light came on. Almost got into an accident due to loss of power.
I was driving home from a golf tournament in the rain. I pulled over on the side of the road to put drops in my eyes. When I started back I pulled out and when I got up to about 20 MPH the vehicle stopped accelerating and started shaking very badly. I let off the gas and pushed back down again same thing happened. It felt like the engine was locking up, after about 20-30 seconds (now with cars on my bumper) it smoothed out. No other issues on the rest of the trip. Total trip was about an hour.
I purchased a new f150 ecoboost on 6/13/2012. At 4516 mls I was attempting to merge onto a highway while towing a large trailer in heavy rain. The truck accelerated to approx 50mph then lost pwr suddenly and slowed to 30mph while traffic was approaching from the rear at highway speeds. The engine light started to flash and then stayed on. I was able to safely pull to the side while the truck slowly started to pick up speed again. Later the same day while trying to merge into more highway traffic it did the same thing. The dealer replaced several parts and I have not had that problem again. However, I have not towed in the same conditions since then. Also, the engine light has turned on three different time due to what the dealer says is a bad turbo intake sensor which they replaced each time. The truck has 18500mls on it and the dealer has been unable to explain why this sensor has failed approx every 4000 mls. All service records are available.
At a speed of approximately 65 MPH while on a 2 lane highway, I accelerated to pass a semi truck. As I was along side the truck, my vehicle decelerated and begin to shudder(felt as if front tires went flat). I was able to pull back behind the truck and off the road. The vehicle recovered and I continued my trip. It was raining at the time of the incident. This was a very dangerous event, fortunately I was able to pull back in behind the truck to avoid oncoming traffic.
I drove my 2012 ford f150 platinum, 4x4, supercrew, multiple times between texas and washington state on interstate 10 and interstate 5, going through oregon between the months of october 2012 and january 2013, traveling through snowy areas and then hot areas such as arizona. When I accelerated hard to merge with traffic or to pass traffic, my truck lost acceleration power. I was able to see white smoke coming from the exhaust. I took my truck to automax ford in killeen, texas. The dealership was aware of the issue from a technical bulletin and repaired the faulty part(s).
The truck started to shudder and there was a loss of acceleration and power.
Tl* the contact owns a 2012 ford f-150. The contact stated that while driving approximately 55 MPH, he depressed the accelerator pedal but the vehicle would not respond. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure mileage was 13,000.
We experienced bucking, shuttering, lack of acceleration when exiting one major highway and entering another. Also check engine light came on. We called the dealer and they said we could still drive truck after we told them what happened. (we were about 200 miles from home)this happened twice. After the first time we took the truck back to the dealer and they installed a cl3z*19e672*a deflector and *w711281*s300 pin. The dealer said the reason for the problem was the computer "learns" the driving habits of the everyday driver (wife). When the husband drove the truck the incidents occurred. Dealer said they re-programmed the computer, installed parts. Several months later when husband was driving the truck it happened again. We took the truck back to the dealer but they said nothing was wrong.
While driving my 2012 f-150 ecoboost driving on the interstate- sped up to jump in front of somebody, the engine totally bogged down.... Wouldn't accelerate at all... Luckily didn't get ran over. This has happened 5 times since. I have talked to multiple people that have the ecoboost engine and it has happened to them.
While driving my 2012 f 150 with under 5000 miles on it at highway speeds I went to pass a truck and put the accelerator down to the floor. The truck down shifted and the RPM's went up. When this accrued the truck feel flat on its face. There was no acceleration what's so ever and the truck seemed to miss. I held it to the floor for about 5 seconds with no change. Please feel free to contact me on this issue.
Intermittent stumble/misfire on acceleration from highway speeds, engine feels like it is in limp mode, this has happened four times.
Tl* the contact owns a 2012 ford f-150. The contact stated that while driving 65 MPH, he attempted to accelerate and the vehicle jerked and lunged. The failure recurred numerous times. The vehicle was taken to a dealer and the contact was awaiting diagnosis of the failure. The failure mileage was 6,000 and the current mileage was 12,600. Updated 07/09/13*lj updated 07/16/2013
Multiple acceleration issues, especially when attempting to pass another vehicle and/or when accelerating abruptly. I have also noticed condensation from the exhaust when first starting the vehicle in the morning on multiple occasions.
While passing another car the throttle would not respond with full power.
On monday december 11, my wife and I left on a trip to indiana with approximately 10,400 miles on the truck. After a stop, at the bowling green, ky., rest stop, I proceeded to return to traffic on interstate 65. After determining I could safely accelerate in front of two semi-trailer trucks, I entered the highway at approximately 50 MPH and went to full throttle. Instead of accelerating, the engine went into a total loss of power. Amid the blowing of air horns and my wife's screams I was lucky enough to avoid a collision by yanking the truck onto the emergency lane. The engine did not stop running, but appeared (to me) to be totally flooded. The engine ran on ?? (number of) cylinders for approximately one eighth of a mile before returning to running on all cylinders. I do not think the service department believed me when they looked at the truck. I have been a mechanic and an engineer for a lot of years, I know what happened this time and it came very close to a serious accident and/ or injury to my wife and me. This was a very close accident avoidance and it practically destroyed our confidence in the truck. While still on our trip, we made the decision to forgo the hassle of trying to persuade the service dept. There was a problem, and get a different brand of new truck. I have taken the high financial loss of trading for another new truck. I am not totally satisfied with this vehicle. The ford has many enhancements and I probably should have tried harder to get the appropriate service action. But would it have been worth the risk of another engine incident, no I do not think so. This was the second and most serious incident and after ford service had pronounced there was no problem with my engine. I sold the truck with 11,399 miles on the speedometer.
Well I purchased this truck a brand new 2012 ford f-150 xlt super crew w/ 3.5l ecoboost engine. The truck had 104 miles when I bought it. After a week I started to notice that the truck shudder's when I accelerate from a dead stop and it also shudders when I come to a full stop. For about a week every single day and time I would start and stop the truck would shudder. I thought this was because the engine just needed to break in. Well I am going on the 4th week of owning this truck and it still occurs. The shudder that is. The shudder also occurs now when I have a cold engine start and I put the truck in reverse it starts to shudder. I do feel as the driver it has effected the performance of my truck. 854
I had slowed down to exit off the freeway to get on another freeway. When I pushed the accelerator, the truck started to shutter, shake, and lose power. I took my foot completely off the accelerator and let the truck coast a short distance. When I tried to accelerate again, the truck seemed fine. It did this twice on the same day. I took it to the ford dealership and they told me the truck was fine. I have an eco-boost v-6 engine.
Tl* the contact owns a 2012 ford f-150. The contact stated that when driving various speeds and when attempting to accelerate the vehicle hesitated or did not respond immediately. The failure recurred numerous times. The manufacturer was notified but offered no assistance. The vehicle was not repaired. The VIN was unavailable. The failure and current mileage was 4,000.
Tl* the contact owns a 2012 ford f-150. The contact stated that while at a stop, the RPM increased excessively and the vehicle accelerated without warning. The contact stated that the vehicle was placed in neutral in order to come to a stop. The vehicle was taken to a dealer where the failure was unable to be replicated. The manufacturer was not made aware of the failure. The vehicle was not repaired. The approximate failure and current mileage was 20,000. *tr...updated 07-10-13
When accelerating to pass another car, the vehicle suddenly looses power. After accelerating rapidly to get on the freeway and releasing the gas pedal, the car continues to accelerate. Ford said there is a problem with their intercoolers and they have been on backorder for several months. This is a safety issue for me and my family and ford tells me to continue to drive my car while I wait more months until the parts are ready. *tr ## VIN failed ##
It was a foggy, moist day and when I accelerated to get around a slow moving vehicle I was in the passing lane! My truck lost all engine power and had no throttle response for 15 seconds, no check engine light came on, my truck went into limpmode. Thankfully no one was behind me and I was not injured or involved in a crash!!!
Accelerating from freeway on ramp at about 25 MPH, slowly pushing pedal down truck tachometer gauge speed up to between 5500 RPM and 7000 RPM. However truck did not move. Transmission acted like it was in neutral. This lasted 4 or 5 seconds; then engine started missing and running rough. All the time vehicle had slowed to approximately 15 MPH. I narrowly avoided being rearended by pulling off the shoulder of the highway. This happen on I-20 near the rest area west bound in monahans texas. Weather was clear, and temp about 42 degrees. Has happened at least three times since then. Fuel was from national vendor and same brand I normally use. Dealer is oblivious to this and what to do.
While entering the highway from the ramp I pulled into the first lane and tried to accelerate. The truck started to miss and buck and would not increase in speed causing me to pull off the roadway. I shut the truck off and restarted it. The truck will only run if you accelerate very slowly. Any attempt to gain speed is met with the same response. I took the vehicle to the ford dealer where they cleared the codes and informed me ford was having problems with water in the intercooler. At this time they have no parts to repair this problem and told me to drive the vehicle as it is. My fear is someone could get killed. The vehicle is not safe to drive. If ford knows there is a problem and can't fix it wouldn't they be responsible.
Tl* the contact owns a 2012 ford f-150. The contact stated that after he parked and exited the vehicle, the vehicle began to roll forward. The contact re-entered the vehicle and engaged the brake pedal however, the wheels started spinning and the contact crashed into another vehicle. The contact's vehicle then pushed the other vehicle into the contact's home. There were no injuries. The contact's home was damaged. The vehicle was not taken to the dealer for diagnostic testing. The failure and current mileage was 10,000.
Tl* the contact owns a 2012 ford f-150. The contact stated that the cruise control was set at 45 MPH when the vehicle jerked abnormally. In addition, when the cruise control was set to 35 MPH, the vehicle would exhibit a loud noise in the rear area. The vehicle was taken to the dealer several times for the failure. The dealer replaced the charge air cooler however, the failure was not corrected and the dealer advised the contact that the vehicle was operating as normal. The manufacturer was made aware of the failure. The vehicle was not repaired. The failure mileage was not available and the current mileage was 2,600.
On a 500 mile trip from va to nyc during rainy weather, engine stalled upon acceleration on 6 occasions. Reproducible after driving at constant speed for an hour, or so, and then accelerating to pass a vehicle or enter a freeway. Absolutely scary and extremely dangerous. I had several such incidences from day 1 of ownership and I already filed a similar report in july 2012 (#10465748). Never happens during dry weather. Ford applied the deflector shield and reprogramming, which did not solve the problem at all, but noticeably reduced the engine power, leading to shudder in 6th gear when going uphill at 60 MPH (apparently due to a lack of enough torque; shudder disappears when switching down to 5th gear). Gas mileage is down to 15-16 mpg at constant speed of 65 MPH on highway, far from the advertised numbers. The check engine light came on during yesterdays nightmare stalling events and the truck goes back into the shop shortly. $55,000 truck that cannot be driven in bad weather - and every ford dealer declines having "ever heard of the problem". Seeing all the complaints in this database and on f150 forums, I think it is time for ford to acknowledge the problem publicly and come up wit a fix vial recall.
While attempting to merge into traffic pulling a trailer I pushed the gas pedal and the truck down shifted but would not accelerate. The truck will drop into 3rd gear and will not exceed 4000 RPM. This has occurred several times and has been in the shop 3 or 4 times. It has also happened without a trailer. On several occasions I have had to pull over and turn the truck off to get it to go. Sometimes I can just come off the pedal and press it again to correct. This is a dangerous issue that could cause an accident. The dealer has reprogrammed the truck several times and replaced the converters twice. I have asked ford to buy back the truck but they have not responded yet. The truck is going back into the shop tomorrow and I am considering utilizing the lemon law.
Was driving at 60mph, accelerated a little and vehicle shuddered/hesitated and didn't accelerate, and check engine light flashed, then became solid. Took to ford dealership was told a calibration update fixed the problem. Same problem occurred 3 days later. Took it back to dealership, it has been there for 3 days and they state "are waiting for ford to advise them on what to do next." this is a 2012 ford f150 ecoboost lariat 4x4 supercrew with only 5,000 miles on it and has a sticker of nearly $50,000. I would expect no problems or at least a timely solution. Either way, merging onto the interstate or needing to accelerate and the truck failing to do so is a safety issue.
Had cruise control set on 59mph......came upon slow moving vehicles and hit accelerator to pass reaching 80mph....made pass.....took foot off accelerator to slow down, nothing happened with vehicle continuously at 80mph....hit brake....no reaction still 80mph...hot the cruise off button on steering wheel, still no reaction.....had to physically force brake pedal to slow vehicle down to a stop, however engine remained at high throttle until I could turn ignition off.......waited a few minutes...turned vehicle back on and vehicle acted normally....tested cruise control a couple times before making it home...no problems....this was and could have been a very serious situation had there been traffic on this highway...thank god it was around 11 pm.....brand new truck...had for two weeks.......reporting to ford service tomm morn.
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