2015 Ford Fusion: hesitation when accelerating

Filed Apr 11, 2025 · Engine · CA

The engine (1.5L EcoBoost) has suffered a failure due to coolant intrusion into cylinder 3, which has led to repeated engine misfires. Trouble codes P0303 (misfire cylinder 3) and P0316 (misfire on startup) were found. The vehicle is currently available for inspection, and a diagnosis was performed by two Ford-certified mechanics using a borescope, confirming the presence of coolant in the combustion chamber. The misfires cause rough running, hesitation, and potential stalling, especially during startup and acceleration. This creates dangerous situations in traffic, such as loss of power while merging or crossing intersections, increasing the risk of a collision. Both technicians concluded the engine has coolant intrusion and recommended a short block replacement as the only viable fix. I was quoted approximately $10,000 for the repair. The vehicle has been inspected by the manufacturer (Ford), but despite acknowledging this is a known issue with the 1.5L EcoBoost engine in various Ford models, they are unwilling to assist with covering the cost of the repair in my case. The Check Engine Light initially came on intermittently and then became constant. Symptoms such as engine misfires, rough idling, and hard starts appeared around the same time, several weeks ago, and have progressively worsened since.

Filed Nov 14, 2024 · Transmission · 156,003 miles · TX

The contact's girlfriend owns a 2015 Ford Fusion. The contact stated while driving at approximately 30 MPH, the transmission hesitated to shift into the intended gear; while the vehicle was parked, the vehicle independently moved. She had to pull to the side of the road for several minutes and shut the vehicle off in order for the vehicle to return to normal operation. No warning light was illuminated. The failure occurred on several different occasions. The contact did research and was made aware of the federal safety agency Campaign Number: 22V413000 (Power Train) however, the VIN was not included. The vehicle was towed to an independent mechanic to get a diagnosis; the diagnosis was unknown. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was unknown.

Filed Apr 22, 2024 · Engine · 35,000 miles · NE

The contact owns a 2015 Ford Fusion. The contact stated while driving 20 MPH, the vehicle began to hesitate upon depression of the accelerator pedal with the check engine warning light illuminated. The contact initially drove the vehicle home and was later able to drive the vehicle to a local dealer. The contact was informed by the dealer that there was a crack in the engine cylinder short block and that the engine needed to be replaced. The manufacturer was notified of the failure. The vehicle had been repaired. The failure mileage was approximately 35,000.

Filed Jan 10, 2024 · Fuel system · 73,000 miles · VA

The contact owns a 2015 Ford Fusion. The contact stated that after refueling the vehicle, the vehicle would fail to start up after multiple attempts without warning. The contact stated that the vehicle eventually restarted and operated normally. The contact stated that the vehicle hesitated upon depression of the accelerator pedal without warning. The vehicle was taken to a dealer however, the mechanic was unable to determine the cause of the failure. The manufacturer was also notified of the failure and was referred to the federal safety agency Hotline for assistance. The vehicle was not repaired. The failure mileage was approximately 73,000.

Filed Oct 18, 2023 · Transmission · PA

Multiple times when starting the car And shifting from Park to Drive or Park to Reverse there is a hesitation of a few seconds then the vehicle shifts hard into gear and jerks the vehicle without pressing the gas pedal. When driving the car fails to shift properly and gets hung up in low gears and shifts and jerks the vehicle.

Filed Oct 31, 2022 · Engine · 85,013 miles · FL

The contact owns a 2015 Ford Fusion. While attempting to start the vehicle, the vehicle hesitated and stalled. The check engine warning light was illuminated. The vehicle was taken to an independent mechanic who informed him that the #3 coil cylinder solenoid and the spark plug had misfired. The vehicle was taken to the local dealer where it was diagnosed that the vacuum pump needed to be replaced. The vehicle was repaired but the failure persisted. The vehicle was taken back to the dealer where it was diagnosed that the engine block was cracked. The vehicle was not repaired. The manufacturer was notified of the failure, but no additional assistance was provided. The contact was and referred to the federal safety agency Hotline. The failure mileage was approximately 85,013.

Filed Aug 30, 2022 · Engine · 100,000 miles · TX

The contact owns a 2015 Ford Fusion. The contact stated while her son was driving at various speeds, the vehicle hesitated and shook upon depression of the accelerator pedal. The contact also stated that white smoke was coming from the engine but was uncertain if any warning lights were illuminated. The contact's husband inspected the vehicle and discovered a coolant leak inside the engine; however, he was unable to determine where the coolant leak was going. One day while her son was driving the vehicle, the failure worsened and the vehicle was towed to the residence. The dealer nor the manufacturer had been notified of the failure. The vehicle was not diagnosed or repaired. The failure mileage was approximately 100,000.

Filed Aug 12, 2022 · Fuel system · 63,785 miles · FL

The contact owns a 2015 Ford Fusion. The contact stated while driving at various speeds, the vehicle suddenly shuddered, hesitated, decelerated and stalled. The contact stated upon restarting the vehicle, the vehicle would operate as needed. The vehicle was taken to the dealer who was unable to duplicate the failure. However, the failure reoccurred increasingly while driving. The vehicle was taken back to the dealer who diagnosed that the throttle body had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 63,785.

Filed Jul 22, 2022 · Transmission · 65,000 miles · MN

The contact owns a 2015 Ford Fusion. The contact stated after refueling the vehicle, the vehicle hesitated while attempting to start the vehicle. Once the vehicle started and the contact shifted into drive(D), the vehicle inadvertently reversed. The failure reoccurred several times. There were no warning lights illuminated. The vehicle was not diagnosed or repaired. The manufacturer was notified of the failure. The VIN was not included in the federal safety agency Campaign Number: 22V254000 (Power Train). The approximate failure mileage was 65,000.

Filed Jun 28, 2022 · Engine, Lights · 120,000 miles · LA

The contact owns a 2015 Ford Fusion. The contact received notification of the federal safety agency Campaign Number: 22V011000 (Service Brakes, Hydraulic). The contact stated that while driving at an undisclosed speed, the vehicle hesitated during acceleration. Additionally, the brake lights remained on continuously even after the vehicle was turned off. The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 120,000.

Filed May 13, 2021 · Engine · 126,000 miles · IN

I walked outside one moring to start my car and there was a prolonged cranking to turn the engine over, right away after putting it in drive there was a significant loss of power, also a hesitation that was never there before. Check enigne light came one. Had it scanned sure enough misfire in cylinder 3 (p0303). White smoke wxiting from exhaust at start up. Very slow to get up to highway speeds. Dont have the funds to repair this issue.

Filed Nov 13, 2020 · Fuel system, Steering · 123,018 miles · FL

The rpms rev and shifting hesitates. Was at a stop light, went to drive off from light and it stalled in intersection as it was stuck in gear and finally went into gear. It slow, hard shifts at usual times. The stalling happens out of the blue. I do not go far because I don't want to have an accident from it stalling in gear! I've put so much money on tranny work, this is ridiculous to not have a safe vehicle and have to worry about being stranded.