2011 Ford Mustang: hesitation when accelerating

Filed Feb 24, 2022 · Transmission · 58,000 miles · FL

The contact owns a 2011 Ford Mustang. The contact stated that while driving at an undisclosed speed, the vehicle experienced a sudden loss of power and hesitated to accelerate. The dealer was made aware of the failure and scheduled an upcoming appointment for diagnostic testing. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure but informed the contact that the warranty had expired. The contact related the failure to TSB Number: AS-21687 (Power Train) however, the VIN was not included. The failure mileage was approximately 58,000.

Filed May 22, 2018 · Transmission · 50,000 miles · NC

Transmission does not shift properly. Hesitation when upon initial take off and inconsistent shifting. Causes hazardous condition when you expect the vehicle to go and the transmission does not engage.

Filed Oct 3, 2016 · Acceleration · 47,500 miles · CT

Engine stalled while driving several times (once on a city street and twice on the highway). On other occasions the car would hesitate to respond to the accelerator. Mechanic scanned the computer and found code p2111 throttle actuator control system stuck open, and determined the cause of the problem to be the throttle body.

Filed May 23, 2015 · Transmission · 56,122 miles · CA

My vehicle loses acceleration of any kind intermittently. This always happens when my foot is off the gas pedal. When I pull over and put the car in park it hesitates loudly. If I turn the car off and let it sit it starts fine after a minute or two. The tech said it is the throttle body and needs to be replaced.

Filed Nov 10, 2014 · Engine · 50,000 miles · CA

I bought my car used at the beginning of this year, 2014. Shortly after my car started breaking down. I took it to a shop to have a diagnostic test ran, no codes came up. A friend of mine than let me borrow his mobile diagnostic machine. The next time I broke down I was able to get a code, that code was p2111 (tac system stuck open). According to my local ford shop this is going to cost me over $600. Again, I just bought the car. I did some research online, however, and it seems like this is a well known problem with many other ford vehicles. 'consumer satisfaction program 13n03' half of the above statement was a copy&paste from my previous complaint. I have yet to hear anything back. Since than, I've broken down several more times. One of which I was almost completely ran over by an 18 wheeler semi. This is unacceptable and could very well cost me my life! I would very much appreciate some form of acknowledgement to my complaint and hopeful approval to correct this defect immediately. Please do not hesitate to call me. Thank you.

Filed Oct 27, 2014 · Engine · 43,000 miles · CA

I bought my car used at the beginning of this year, 2014. Shortly after my car started breaking down. I took it to a shop to have a diagnostic test ran, no codes came up. A friend of mine than let me borrow his mobile diagnostic machine. The next time I broke down I was able to get a code, that code was p2111 (tac system stuck open). According to my local ford shop this is going to cost me over $600. Again, I just bought the car. I did some research online, however, and it seems like this is a well known problem with many other ford vehicles. That's when I went to my local ford and mentioned 'consumer satisfaction program 13n03' they informed me of the "many" ford vehicles that are covered to be fixed under that recall or whatnot. However, ford mustangs were not on that list. I feel this is undoubtedly a ford issue, one of which that should be corrected out of your pocket and not mine. It's very sad to have the excitement of getting a new car and not even being able to drive it out of town because you are scared for your life! I have now broken down countless times, mostly back to back (on the freeway). It makes my personal world as well as my professional life a living hell since I'm having to rent cars out of my own pocket every time my boss needs me to drive out of town for him. An absolute joke if you ask me. Anyhow, its been months now that I've meant to create this complaint. I have never needed to do this before so if there's another step I may be missing or if any questions need to be answered, please do not hesitate to give me a call. Thank you! I will be anxiously waiting by the phone :)

Filed Oct 22, 2014 · Transmission · 9,000 miles · NH

When slowing to turn left into a parking lot waiting for traffic in the other direction to pass so that I could safely turn...once it is safe to turn, when I step on the accelerator pedal, there is a very slow response time for the vehicle to start accelerating. This is extremely dangerous in that the car won't get out of the way quickly. It hesitates for about 2 seconds after I press the accelerator pedal before any acceleration. This only happens in the condition that I don't come to a complete stop before turning. If I slow to approximately 5 MPH or less and then press the pedal to accelerate into the turn, that is when there is a delayed response.

Filed Jul 13, 2011 · Transmission · 25 miles · CA

Since the first day that I bought this new mustang, the automatic transmission shifts hard and there is a clunking noise. This happens mostly when slowing down and then starting to pick up. Also when just slowing down and the car shifts to 1st gear. The shifting is erratic and noisy. When the engine is cold, it also bangs into 2nd and 3rd gear. The dealership checked it out and said that this is part of the computer programming and is the way the transmission was designed, until it gets used to my driving habits. That was 17, 000 miles ago. They said there might be a computer upgrade in the future. In the meantime I fear a rear end collision when I am unable to pick up speed because of the hesitation and clunking.

Filed Feb 22, 2011 · Transmission · 2,100 miles · CA

Vehicles has been to dealer twice due to 1) transmission grinding from 1st to 2nd; 2) difficult engaging into 3rd gear - been locked out, unable to get into 3rd gear on numerous occasions; 3) clutch has grabbed on several occasions shifting from 1st to 2nd causing the entire car to shudder 4) on several occasions, unable to shift into any gear while accelerating. Had to repeatedly pump the clutch in order to shift gears; 5) unable to get into 1st gear after coming to a dead stop 6) difficulty getting into reverse. 1st time I took the vehicle in dealer said they couldn't replicate the problem and tried to blame is on the driver. When owner tried to explain in detail exactly what was happening w/ vehicle, dealer refused to document the additional information. 2nd time I took it to dealer, dealer technician identified concern. Ford technician came out and verified concern regarding grinding, hesitation getting into gears. Technician bled and vacuumed the clutch but the problem remains. Regional customer manager was supposed to contact owner regarding possible fixes. Regional customer service manager will no longer respond to emails. Called ford headquarters last week to lodge a complaint and they said someone would get back to me within 48 hours. Tomorrow will be one week...still haven't heard anything. One of these days I'm going to get rear ended due to being able to shift properly.