2021 Ford Ranger: hesitation when accelerating

Filed Jul 29, 2026 · Acceleration, Transmission · NE

The 10R80 10-speed automatic transmission and the gear-shift linkage module are defective, and the truck remains available for inspection. Our safety is constantly put at risk because the transmission exhibits an extremely violent, highly intermittent powertrain lunging jolt during deceleration and stopping. The impact is so severe that it sounds and feels like a loud gunshot firing right next to the cabin occupants. Furthermore, the transmission simultaneously exhibits severe throttle hesitation and gear-skipping. This causes the vehicle to drop gears and completely fail to move when attempting to accelerate at busy stoplights, trapping us as a sitting duck in active traffic. Earlier in our timeline, the technician improperly reassembled the shift linkage, which caused the multi-ton vehicle to refuse to engage in Park and violently roll backward down a steep residential incline; an emergency parking brake deployment was required to prevent a catastrophic accident. The transmission defect was physically confirmed by [XXX] of Papillion, who verified scored, sticking fluid control valves inside the main control unit. Additionally, the hazard was officially confirmed by BBB AUTO LINE National Arbitrator Sharon Katt (Case XXX). The arbitrator officially signed a ruling certifying that our safety, use, and value concerns are completely valid, explicitly noting that the intermittent nature of this transmission failure does not minimize the extreme safety hazard. There were no warning lamps prior to the failure. The symptoms first appeared at ~49,000 miles. The dealer has since refused advanced diagnostics, executed an irrelevant radio reset instead, and willfully fabricated a fake service record on CARFAX on April 21, 2026, to force-close system safety alerts in their database. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Filed May 28, 2026 · Transmission · CO

truck hesitates to go into gear then slams into reverse unexpectedly with a lot of force backing up - almost ran over a family member. Same thing when cold and going from park to drive, almost drove off my driveway down a steep mountain. I believe it is related to TSB 24-2046 No warning lights or anything, dealer has not been able so far to reproduce because the weather warmed up

Filed Feb 21, 2026 · Engine, Fuel system · GA

My truck loses power at a stop, starting to accelerate is stalls in the middle of the road. It seems to be stuck in gear or not going in gear. It will finally start going and the hesitation starts a the rpm gage goes up to about 3000 rpm’s and then goes back down to 1500. This is extremely dangerous to lose power in the middle of the road. This needs to be addressed.

Filed Feb 4, 2026 · Transmission · GA

Transmission slipping and hard down shift and hesitation from 2nd to first , has had rear wheel lock up while moving , dealer is ignoring my issues . Thanks

Filed Dec 11, 2025 · Transmission · 76,000 miles · NJ

The contact owns a 2021 Ford Ranger. The contact stated that while driving at 65 MPH, the vehicle hesitated, with an abnormal sound coming from the transmission. The contact stated that the vehicle functioned as intended afterwards. The vehicle was not taken to the dealer or an independent mechanic. The vehicle was not repaired. The contact stated that on a separate occasion, while driving at 65 MPH, the yellow wrench warning light illuminated, and the RPMs fluctuated; however, the vehicle failed to move, and the vehicle stalled. The contact turned on the hazard lights and coasted to the side of the road. The vehicle was towed to an independent mechanic who diagnosed that the transmission had failed and needed to be replaced. The vehicle remained at the dealer unrepaired. The manufacturer was not notified of the failure. The failure mileage was approximately 76,000.

Filed Jun 24, 2025 · Transmission · 91,000 miles · TN

The contact owns a 2021 Ford Ranger. The contact stated while attempting to accelerate, the transmission malfunctioned, causing the vehicle to hesitate while accelerating. The contact stated that the vehicle accelerated at reduced speeds. The vehicle was taken to the local dealer who diagnosed that the transmission was faulty and needed to be replaced. The vehicle was not yet repaired. The manufacturer was notified of the failure, but no assistance was offered. The failure mileage was 91,000.

Filed Jun 4, 2025 · Transmission · 59,000 miles · ID

The contact owns a 2021 Ford Ranger. The contact stated that while driving at various speeds, the vehicle hesitated and jerked while depressing the accelerator pedal. The contact stated that the transmission unexpectedly downshifted before slamming into gear. There were no warning lights illuminated. The vehicle was taken to the dealer; however, the vehicle was not diagnosed or repaired. The contact was informed by the dealer to call the manufacturer for assistance. The manufacturer was notified of the failure, and the contact was referred to the federal safety agency Hotline for assistance. The failure mileage was approximately 59,000.

Filed Dec 2, 2024 · Transmission · 37,000 miles · FL

The contact owns a 2021 Ford Ranger. The contact stated that while driving at various speeds, the vehicle hesitated and jerked while depressing the accelerator pedal. The contact stated that at first there were no warning lights illuminated; however, after a while the "Power Train Malfunction - Reduced Power" message was displayed. The dealer and an independent mechanic were notified of the failure and acknowledge that the defect was a common failure. The contact was provided an estimate for a new transmission. The manufacturer was also notified of the failure and the contact was offered financial assistance if the vehicle was serviced by a Ford dealer. The vehicle was not repaired. The failure mileage was approximately 37,000.

Filed Jul 7, 2024 · Transmission · TN

This is what is going on with my 2021 Ford Ranger automatic 10-speed transmission and the vehicle's drivability. When bringing the vehicle to a stop, the shifting down to a 1st gear is often executed so harshly that I can hear the driveshaft ringing in reaction to the transmission hard shift nearly locking the rear wheels. The whole act resembles "slamming" a shifter into a gear without disengaging a clutch that can be achieved on a standard (stick-shift) transmission "bangs" at a full stop feeling like being rear-ended. After a full stop, the take-off is “sluggish” - The truck gets moving in the 1st gear, the engine revs up to 2500 - 3000 RPM the transmission hesitatingly shifts into 3rd (always skipping 2nd), the noticeable sound of ‘gear grinding’ is heard when the 3rd gear is engaging. The whole process usually takes 2 to 3 seconds, the truck would literally "drift" before any noticeable acceleration is achieved. Lastly, since the day days of ownership, in the area around 2K miles and above, the truck, when the gas pedal is “floored” (ea. on the highway), would get a hard "mallet-like: kick with a significant audible, hard knock somewhere in the drivetrain and at times during this even the "explosion-like" could be heard from the engine compartment making the vehicle shudder.

Filed Jan 11, 2023 · Engine · 9,952 miles · NY

The contact owns a 2021 Ford Ranger. The contact stated that while driving at highway speeds, the vehicle hesitated while depressing the accelerator pedal on four separate occasions, with the check engine warning light illuminated. Despite the failure, the contact managed to drive the vehicle to a local dealer where a mechanic discovered a misfire in one of the cylinders; caused by water found in the spark plug well. The dealer managed to drain the water from the spark plug well; however, corrosion was found in the spark plug well. The manufacturer was notified of the failure and the contact was given a case number. The vehicle was repaired. The failure mileage was 9,952.