2012 Ford Mustang: sudden loss of power

Filed Oct 16, 2024 · Electrical, Transmission · OH

Transmission seems to lose power while driving, the car will barely pull itself but the rpms increase if I accelerate. This has happened several times while driving and occasionally there are dash lights lighting and speedometer/gas gauge doesn’t work but that doesn’t happen every time. When it happens I pull over and shut it down and restart and it runs correctly until it happens again! I do a lot of highway driving and the car just “falling flat” on a multi-lane highway at 70+ mph is definitely a safety issue! I have taken it to my local fastlane shop and the car was driven but didn’t malfunction at that time. He advised me to try to drive it there if it happened again, but I have never been close to the shop at the times it happens or they are closed. There is no advance warning, it happens at various speeds and even on takeoff after stopping for traffic lights. I once was pulling into traffic when it happened and didn’t have enough power to get to my lane before it fell flat! Fortunately I could back up before getting hit by oncoming traffic.

Filed Oct 28, 2018 · Electrical · 72,000 miles · SC

I own a 2012 ford mustang and recently had problems with the electronic throttle control. It was the exact same issue as outlined in ford's customer satisfaction program 16b23 (https://ford.oemdtc.com/2670/16b23-electronic-throttle-body-replacement-2011-2012-ford-lincoln/5). I have a 2012 3.7l v6 mustang that I believe should have fallen under this program. I never received any mail or email notifying me of this program, although I had lived at the same address for as long as I had owned the car and previously received an airbag recall notice, so I know ford has my address. I was also at my dealer for service appointments (the same dealer where I bought the car) during the program time period and they never notified me either. Long story short, I just had to pay a little over $400 to have my local ford dealer replace the throttle body. I asked about this program and was told because it was outside of the program end date they couldn't do anything. My question is, why didn't ford contact me about this program if my car was covered? If my car wasn't covered, how did ford distinguish between which cars were worthy of being in the program and which weren't? This was a huge safety issue for me as the car randomly lost power on multiple occasions. One time I was doing 50 MPH on the highway with alot of traffic around me. Luckily there was an open median I could coast into, but I may not have been as fortunate as others who have had this problem. I do not believe ford's customer satisfaction program 16b23 which was only in effect for a year was adequate to address this safety hazard. I also do not believe that ford did their due diligence to notify owners of this program and the associated safety hazard.

Filed Apr 1, 2018 · Acceleration · 80,000 miles · NC

Lost power in my 2012 v6 mustang. Wrench light came on indicating limp home mode. Was able to pull off to the side of road. Turned engine off and the it was fine for about two miles then cut off again. Restarted again and was able to make it home but the engine light is on. Going to try and get it to the shop tomorrow, but this is a severe safety problem in my mind. Was lucky I didn't get rear ended

Filed May 6, 2017 · Fuel system · 75,000 miles · FL

Throttle body malfunction - causes loss of power while driving. Acts as though you took your foot off the gas pedal. Engine will not rev above idle speed. Check-engine light comes on. If you stop, turn off the car, and re-start, it will be ok for a while. It happened to me twice in 2 weeks. Part was replaced, but the new part failed again in 16 months. Had that replaced this week. (may '17). I am aware of ford customer satisfaction program 16b23, but the dealer said my VIN was not one of the affected vehicles. I beg to differ.

Filed Apr 26, 2017 · Acceleration · 23,000 miles · TN

While driving the car lost power and would not respond to pushing the accelerator pedal. The wrench light illuminated and the panel and the engine dropped to a rough idle. I had to activate my flashers and coast into a parking lot. Turned off the motor and restarted the car. Operated normally until I accelerated out of the parking lot. Same condition happen again and I had to activate flashers and turn off the motor and restart the car again while stuck in the road. Operated normally again and made it home. Ran a code scanner on the car and it reported a problem with throttle: p2111 ford throttle actuator control system ' stuck open.

Filed Dec 16, 2016 · Transmission · 348,256 miles · FL

The transmission downgears causing a loss of power while in motion. It occurs at low speed and at high speed. Alarming when traveling on an expressway at 55 MPH.

Filed Sep 19, 2016 · Acceleration, Engine · 70,000 miles · CA

Tl* the contact owns a 2012 ford mustang. The contact stated that the vehicle experienced a complete loss of power and the maintenance warning indicator illuminated. The vehicle was taken to the dealer where it was diagnosed that the electronic throttle body was defective and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 70,000.

Filed Aug 13, 2016 · Steering · 41,000 miles · TX

Vehicle lost all power steering at highway speeds. Vehicle also made clunking sounds while turning. Had to replace epas steering assembly at my own cost $1656. Unsafe and unproven design. Electrical connectors for epas are mounted low so road grime/rain penetrate into the connector causing malfunction.

Filed Dec 21, 2015 · Acceleration, Engine · CA

Was driving around 50mph on city streets when all of a sudden car lost power and went limp. Wrench light came on and car was making a weird noise under the hood like it was struggling. Couldn't accelerate and I had to coast to the right hand side of the road. Turned the car off and then back on and everything was okay. This has happened 3 times since within a 8 month time period driving at various speeds. Each time I turn the car on & off again and it seems to reset. I've noticed my car hasn't been getting the same city mpg as before. Ive only had this car 2 years, I'm the second owner and this started at roughly 62,000 miles.

Filed Nov 4, 2015 · Transmission · 50,000 miles · PA

Tl* the contact owns a 2012 ford mustang. While driving at various speeds, the vehicle lost power. In addition, the gear shifter was difficult to shift into various positions. The failure recurred on numerous occasions. The vehicle was taken to multiple dealers who were unable to diagnose or repair the vehicle. The manufacturer was notified of the failure. The failure mileage was 50,000.

Filed Oct 7, 2015 · Acceleration, Electrical · 56,000 miles · FL

I was driving in the expressway at 60 MPH when suddenly my car lost power on the acceleration. A wrench tool appear and the dashboard on the RPM clock ... At that moment the car desaccelerate almost to 30 MPH and I was unable to gain speed. I went to a side of the road, turn it off and restarted the car. Everything appear to be normal but the first thing I did was go to the dealer. They run a test on it and told me that the problem was related to the electeic throttle body. I dont understand how is possible to happend something like that when my car barely has 4 years. There is no warranty on ot and the repair for it is really expensive.

Filed May 28, 2015 · Steering · 40,000 miles · TX

Vehicle lost all power steering while driving. Something sounds loose inside steering gear.