Power Train Problems of Ford F-150 - part 1

The contact owns a 2015 Ford F-150. The contact stated that while driving 40 mph, the vehicle downshifted from 4th gear to 2nd gear and the rear wheels locked up. The message “service vehicle soon” was displayed and the check engine warning light was illuminated. The vehicle was taken to an auto zone and dtc: p0720 was retrieved. A dealer was contacted; however, the vehicle was not diagnosed or repaired. The contact was informed that the dtc: p0705, p0706, p0707, and p1702 needed to be displayed for the vehicle to be repaired under extended warranty program: 26n04. The manufacturer was notified of the failure. The contact referenced NHTSA campaign number: 26v237000 (power train) as the possible cause for the failure. The failure mileage was 166,087.

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Ford sent me a recall letter stating there was a remedy for my truck. I took the truck to a Ford service center and was informed that the remedy they had in place to fix the recall does not resolve the problem. They also informed me that they have no idea when the new remedy will be out to fix my truck. Seeing that there is no remedy or any timeline of when I’m getting my truck back I called Ford customer support to ask for a loan vehicle. They told me they was unable to give me one. Seeing that it is a transmission problem and even having in the letter it increases the risk of an accident. I feel unsafe to drive the truck in my 60 mile commute to work or in general.

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My truck is shifting erratically going from 5/6th gear down to 1st/2nd. It looses power. My battery light comes on, the wrench comes on, check engine light comes on but no codes come up. I have already put in a new transmission at my cost.

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The contact owns a 2013 Ford F-150. The contact stated that while driving 55 mph, the transmission downshifted into first gear. The service vehicle soon warning light was illuminated and the vehicle was restarted and the contact continued driving. The vehicle was taken to an independent mechanic where it was diagnosed, and the contact was informed that the lead frame had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was not notified of the failure. The contact referenced NHTSA campaign number: 19v075000 (power train); as a possible cause for the failure. The failure mileage was 126,149.

I am writing to formally report a severe and dangerous safety defect regarding the 10r80 10-speed automatic transmission in my 2020 Ford F-150. While driving, the vehicle routinely experiences a complete "neutral-out" or severe shift flare when attempting to transition out of 1st gear. Instead of engaging 2nd or 3rd gear, the transmission completely drops out of gear into a false neutral. During this failure, the vehicle experiences an immediate and total loss of forward propulsion for several seconds while the engine revs freely. After a dangerous delay, the transmission violently slams back into gear. This is an acute safety hazard. Losing all forward acceleration unexpectedly—specifically when pulling out from a complete stop, navigating intersections, or merging into fast-moving traffic—leaves the vehicle stranded and completely defenseless against oncoming traffic. It creates an immediate risk of a severe rear-end or broadside collision, as trailing drivers do not expect a vehicle to suddenly lose all power. Ford is fully aware of this mechanical defect, as documented in their internal technical service bulletin TSB 25-2126 (and its predecessors). The bulletin notes that an internal cdf clutch drum bushing physically slips out of place, blocking hydraulic fluid passages and starving the transmission of pressure. Because this is a known factory engineering defect that causes an unpredictable loss of propulsion in active traffic, it should be treated as a critical safety hazard rather than a standard wear-and-tear component. I urge the NHTSA to investigate this systemic 10r80 cdf drum failure to protect consumers from catastrophic accidents.

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Vehicle: 2021 Ford F-150 tremor mileage: approximately 103,000 miles my 2021 Ford F-150 tremor developed a severe shudder and vibration during acceleration. The condition progressively worsened and became significant enough that I had the vehicle professionally inspected. The vehicle was diagnosed with a failing torque converter as the cause of the acceleration shudder/vibration. The truck has been well maintained throughout my ownership. It is garage kept and receives regular maintenance through an authorized Ford service facility. I have maintenance records documenting the vehicle’s service history. My concern is that the torque-converter failure produces a severe vibration/shudder during acceleration and has progressively worsened. I am concerned about the potential safety implications if the torque converter or transmission continues to deteriorate while the vehicle is being driven. I contacted Ford regarding the failure and requested assistance with the repair. The vehicle is outside Ford’s original powertrain warranty at approximately 103,000 miles, and Ford declined to provide assistance. I am submitting this complaint so NHTSA has a record of this torque-converter/transmission failure and the severe acceleration shudder occurring in my 2021 Ford F-150.

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My 2017 Ford f150 has been downshifting unexpectedly now for weeks. There have been a few times when I literally lost control of my truck. I am afraid to drive on highway. I use my truck for work and everything else. The local Ford dealership here astro Ford in d'iberville, ms told me yesterday they will not repair my truck based on guidance from Ford. . . They recieved just a few days ago. . . . Saying the recall repair is inadequate and another remedy is being worked on. I cannot drive my truck to go to work to make money to pay bills. Based on what I have read they will also refuse to give me a car loaner of some kind for the time being. What xxx am I supposed to do now??????.

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I am reporting a catastrophic component failure on my 2024 Ford F-150 equipped with the 9. 75-inch heavy-duty 3/4 float rear axle design. Both the driver-side and passenger-side rear axle hub bolts have completely sheared off due to metal fatigue. The bolt heads are missing entirely, and the threaded studs remain snapped off flush inside the wheel hub assemblies.

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The contact owns a 2015 Ford F-150. The contact received notification of NHTSA campaign number: 26v237000 (power train); however, the part to do the recall repair was not available. The dealer informed the contact that the recall repair appointment was cancelled because the manufacturer had cancelled the recall.

I have a 2012 f150 that has a safety, hazard with the transmission. It’s a 6 r80 transmission and the lead frame assembly is suddenly downshifting. From six gear to second year I have contacted the Ford motor company. They say they cannot do anything. That the safety issue is expired, but I bought the truck used and was unaware of the safety issue. And now I’m having problems with it. I need the safety issue fixed as soon as possible. Thank you. Sincerely, [xxx]. [xxx] united states air force , xxx information redacted pursuant to the freedom of information act (foia), 5 u. S. C. 552(b)(6).

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The contact owns a 2017 Ford F-150. The contact stated that while driving at various speeds, the transmission unexpectedly downshifted from 6th gear to 2nd gear. The vehicle was taken to the dealer, where the torque converter was replaced; however, the failure persisted. The contact received notification of NHTSA campaign number: 26v237000 (power train); however, the part to do the recall repair was not yet available. The dealer was contacted and informed the contact that the recall repair appointment could not be scheduled because the manufacturer had placed a hold on the recall on September 28, 2026. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The failure mileage was approximately 80,000.

The contact owns a 2016 Ford F-150. The contact received notification of NHTSA campaign number: 26v237000 (power train); however, the part to do the recall repair was not yet available. The local dealer was contacted; however, the contact denied the repair for being insufficient. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was made aware of the issue. The contact had not experienced a failure.

The contact owns a 2016 Ford F-150. The contact stated that while driving 60 mph, the accelerator pedal was depressed; however, the transmission unexpectedly downshifted to first gear. The contact stated that there was a ten-second delay prior to the transmission downshifting. The vehicle was uncontrollable, and the vehicle crashed into a ditch before coming to a stop. The contact stated that the failure had occurred while the contact's wife and two minor grandchildren were inside the vehicle. The contact stated that the failure had occurred after an unknown recall repair was performed. The dealer was contacted by phone and made aware of the failure. The vehicle was taken to the dealer; however, the failure was not duplicated. The manufacturer was contacted by phone, and a case was filed. The failure mileage was approximately 123,000.

In mid-September 2026, I had safety recall 26s28 (NHTSA 26v-237) performed on my 2016 Ford F-150 at corwin Ford reno in reno, nv. The recall remedy was a powertrain control module software update intended to prevent unexpected transmission downshifts. Before the recall repair, the vehicle had no drivability problems of any kind. About three days after the recall repair, the truck began repeatedly losing acceleration while driving at highway speed. The vehicle would stop responding to the accelerator, and the wrench warning light came on in the instrument cluster. This happened on multiple occasions over several days. Losing acceleration in highway traffic creates a serious risk of a rear-end collision. This is the same type of loss-of-control hazard the recall was meant to address, and the condition appeared only after the recall software was installed. I contacted the dealer right away to report the safety problem. Over two days I called at least six times and left multiple messages that were not returned. When I reached the service department, they would not inspect the vehicle until the following week, and a service manager offered the same delay. I also contacted Ford customer service and received no help. The vehicle has been at the dealer since September 30, 2026. As of October 7, 2026, there is still no diagnosis or repair. I believe the recall 26s28 remedy either failed to correct the defect or introduced a new powertrain fault that causes loss of motive power at speed. I am asking NHTSA to note this complaint in connection with recall 26v-237 and investigation ea26001, and to evaluate whether the remedy is adequate.

Sudden downshifts too 1st gear and 3rd gear from highway speeds. Also goes into limp mode. The codes needed to replace the molded lead frame are present, was at the dealer yesterday and Ford will not let them make the needed repairs under warranty. Ford said I must wait an undetermined amount of time for them too try and find a fix for this before anything else can be done. Besides this being the only vehicle I have at the time too drive, it is totally unsafe to drive. Ford needs to come up with a fix now or replace the molded lead frame now so repairs will be complete and I will have a safe vehicle to drive. This problem is happening almost everytime I drive. It started on 9/26/26 and continues today.

10r80 transmission failure - the truck jerks in and out of gear and transitions between gear levels can be delayed by seconds causing lack of control.

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2016 Ford F-150, 5. 0l, 6r80 transmission, 112,083 miles. Safety recall 26s28 was performed on 08/05/26 at an authorized Ford dealer. The wrench/powertrain warning recurred on 08/15/26. On 08/20/26, at 111,998 miles, the dealer found dtcs p0720 and p0722 (output shaft speed sensor) and stated in writing that the transmission molded leadframe must be replaced. Ford denied coverage under customer satisfaction program 26n04 because those codes are not on the program's list. The transmission then failed on two consecutive days, within about 85 miles of driving since the dealer visit. On 09/23/26, while I was accelerating across two lanes of traffic, the engine revved abnormally high during an upshift, as if the transmission failed to engage a gear. It then stayed in 3rd, and I had to make a left turn from a stop at an intersection in 3rd gear with greatly reduced power. On 09/24/26, after crossing a four-lane highway intersection, the warning appeared while I was accelerating uphill. The transmission stayed in 3rd at a complete stop and would not downshift to 1st. Shifting through park and using manual mode did not restore 1st gear; only an engine restart did. In both events the warning light cleared itself while the fault continued, so the dashboard gave no indication of the problem. Turning left across oncoming traffic and pulling away from stops near highway traffic with reduced power is a safety risk. The recall remedy did not prevent this failure, and the repair the dealer says is required is being denied under the related program.

While driving on a residential road, my 2019 Ford F-150 (10r80 10-speed automatic with 88k miles) lost power to the wheels – the engine revved but the truck would not move. It did not recover after I shifted to reverse, then park, then shut the engine off and restarted. The vehicle had to be towed. This followed an earlier event on or around July 7, 2026 (at ~86,500 miles) where the transmission failed to downshift from 4th gear at a stop and stalled the engine, recovering only after cycling the shifter. The truck has a history of hard shifting into and past 4th gear for over a year now. No warning lights appeared during these events. The safety risk is that the transmission intermittently loses drive engagement and can stall the vehicle in traffic. When the engine stalls, power brake assist is lost after one or two pedal applications. Had the loss of drive occurred in an intersection or on the highway rather than a low-speed residential road, it could have caused a collision. An authorized Ford dealer has twice been unable to duplicate the fault on test drives, consistent with the intermittent 10r80 cdf clutch cylinder hydraulic leak described in Ford TSB 25-2126. The dealer’s technician suspects an f-clutch concern.

I have experienced ongoing issues with transmission. Two separate dealerships have done partial "rebuild" to no avail. The vehicle has lost power several times which include 09/24/26 at approximately 3:30 pm. While pulling onto a busy highway in heavy traffic. As soon as I got home, I parked the truck in the carport where it remains as of this writing. There have never been any warning lights, symbols, etc. On dash when these and other multiple problems with this vehicle happened. Multiple technicians have duplicated all of the issues that I have reported to the dealerships. I have been in touch with Ford motor company several times and have an open case with nothing from their representatives except to say how sorry they are. Second dealership has stated both verbally today, 10/08/2026, and in writing on 10/05/2026 that he personally oversaw a complete teardown of this transmission on 08/03/2026 when c-clutch was replaced see service order#191875 although parts list doesn't support his statement. Please refer to service order #192388 which is a documented failure of the e-clutch in my vehicle. The service manager at j. O. Williams states that this document is "speculation" on the part of the technician. I am in possession of his email stating such. I am at this time requesting any investigator be assigned to my case/claim # 11767700, which I was given by tyronda (last name unknown) respectfully yours john adair.

2018 Ford F-150 5. 0l with 10r80 10-speed transmission, approximately 86,000 miles. The transmission began exhibiting abnormal shifting, including missed shifts and loss of propulsion. On multiple occasions while traveling approximately 60 mph, the vehicle suddenly lost power/propulsion. During these events, the gear indicator changed from 10th to 1st and engine rpm appeared to increase. I do not believe the transmission physically engaged 1st gear; the actual gear engaged is unknown. The unexpected loss of propulsion at highway speed created a safety concern because the vehicle would not respond normally to accelerator input while traveling with traffic. The transmission also malfunctioned when accelerating from a stop. It would sometimes have difficulty shifting through approximately 3rd, 4th, and 5th gears and lose propulsion for approximately 3–5 seconds. I would release and reapply the accelerator trying to get the transmission to engage a gear. This could be particularly dangerous when entering or crossing traffic. An independent transmission shop inspected the vehicle and documented codes p0732, p0734, and p07f7. The shop found the transmission fluid full but dark and diagnosed an internal transmission failure requiring replacement. The transmission was replaced on October 5, 2026. To my knowledge, the original transmission was not disassembled, and the exact internal failure is unknown. The vehicle was not inspected by Ford. There was no crash or injury.

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2018 Ford F-150 limited with the 3. 5l ecoboost engine. At approximately 60,000 miles the engine began making a rattling noise from the front of the engine on cold start, lasting several seconds. Over the last three months the noise has become progressively worse and now occurs at every cold start and lasts longer. The check engine light is currently illuminated. The vehicle has not stalled or lost power. A Ford dealer (wynne Ford, hampton, va) diagnosed the condition on September 24, 2026 at 104,661 miles as cam phaser failure, requiring replacement of the variable camshaft timing (vct) units and associated timing components. This matches Ford's technical service bulletin 23-2143, which covers 2017-2020 F-150 vehicles with the 3. 5l ecoboost engine built on or before November 30, 2019. Ford previously issued customer satisfaction program 21b10 and warranty extension 21n03 for this same defect on March 2, 2021, but 21n03 expressly excluded the F-150 limited trim, and both programs have since expired. The dealer additionally reported that it has submitted multiple other cam phaser repairs on 2017-2020 3. 5l ecoboost vehicles for manufacturer assistance in the past two months, including vehicles newer and with lower mileage than mine, and that all were denied. The quoted repair is $5,414. 11 at my expense. I am filing this report because cam phaser failure in these engines can progress to timing chain damage and engine failure, and because Ford has documented this defect since at least 2021 without issuing a recall. I contacted Ford (case cxh-09424982) and was denied any financial assistance.

Was driving on the interstate and the speedometer stopped working, the truck shifted to first gear and entered limp home mode. This is a know issue with the lead frame and even though I only have 95k miles on the truck, Ford only offered a 10 year extended warranty csp 19n01 to cover it which has expired on time. This is a known issue and could have caused an accident on the interstate. This issue should be scheduled as a recall rather than an extended warranty that can expire. So because we do not drive the truck that often we are now being forced to pay for a known issue that Ford is aware of.

The transmission control module recall was serviced and a diagnostic was paid for to ensure there was no outstanding issues with the transmission 300 miles later the transmission totally failed in forward gear and reverse. It will only go into park, no reverse and no forward gear, a complete electronic and mechanical failure 300 miles after a service! I called Ford for assistance and they would only take a complaint. With no follow up.

2022 Ford F-150 10 speed automatic transmission. The issue started with a clunking noise when shifting, then progressed to clunking more often and skipping gears when shifting, now the vehicle gets stuck in gear. This has ultimately left us stranded in traffic when the vehicle will not shift into gear. We have now been told by the dealer that the transmission will need to be replaced, only after their initial incorrect diagnosis to overhaul the differential. I have never owned a vehicle for 4 years that has required such major service due to mechanical issues, not to mention the cost!.

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2018 Ford F-150 XLT power train / transmission (10r80 10-speed automatic) ~100,000 miles (99,737) while accelerating, typically at neighborhood speeds, we sometimes get a hesitation/delay in shifting, which causes a pause and then a hard shift jerking forward, which makes it unreliable at times. Not getting any dashboard warning lights, and has had the transmission flushed at 80k miles by a Ford dealership. A Ford dealership diagnostic inspection confirmed an internal mechanical defect: a failure/migration of the internal teflon-sealed sleeve on the cdf clutch drum. The dealership technician also noted harsh upshifting between gears 3 and 4, and harsh downshifting between gears 6 and 5. The sudden, unpredictable loss of power during low-speed acceleration creates an immediate safety hazard. It leaves the vehicle vulnerable to rear-end collisions when merging into moving traffic, navigating busy intersections, or pulling out onto roadways, as the truck fails to accelerate when commanded. Furthermore, the violent gear slamming can cause momentary loss of traction or driver distraction under low-grip road conditions. Researching, what we're experiencing is very common with the 10r80 transmission that we have, and documented in TSB 23-2152, and TSB 25-2126. From what I'm reading, Ford redesigned the cdf drum in 2023 to try and correct the manufacturing issue.

Driving on interstate when my truck suddenly flashed a wrench light and downshifted to 5th gear. Truck went into limp mode limiting my gears to 3rd through 5th gear. Had vehicle towed to Ford dealership. They wanted $399 just to do a diagnostic and scan for codes. My truck was showing code p0720 (output shaft speed sensor) at my house before being towed. This output shaft speed sensor is integrated into the internal molded lead frame, which is the part that was recalled for replacement on safety recall notice 26s28/NHTSA recall 26v237. However, Ford will not cover this under the lead frame recall. My guess would be because they know it’s a loophole and they can still make money off of repairs for the same part.

Sudden downshift while driving. Speedometer goes to zero while driving. Safety is high risk. Warning lights yes. No inspection yet. Happened twice in the last week.

I am writing to formally report a dangerous safety defect involving my 2015 Ford F-150 XLT supercrew cab. While operating the vehicle, I experienced a sudden and total loss of control. Without warning, the gas pedal lost all tension, the truck abruptly downshifted and went into limp mode, and both the check engine and wrench warning lights illuminated on the dashboard. This loss of control while driving created an immediate and severe safety hazard. My investigation into this failure reveals a widespread pattern of similar incidents involving the transmission molded leadframe. It appears that the failure of this component frequently causes an output shaft speed sensor malfunction, leading to the exact dangerous loss of power I experienced given the high frequency of these reports from other owners. This loss of control while driving created an immediate and severe safety hazard. Upon experiencing these symptoms, I promptly scheduled an appointment at my local Ford dealership. Despite the service department confirming that the transmission lead frame is failing, Ford refused to perform the repair citing that my specific trouble codes are not currently approved under their policy. This is unacceptable, as these symptoms are identical to those addressed in recall 26s28 and Ford has previously acknowledged that these specific codes are directlv related to this component's failure in other mode years. My investigation into this failure reveals a widespread pattern of similar incidents involving the transmission molded leadframe given that my vehicle exhibits all the symptoms described in the existing recall, it is clear that this is a systemic manufacturing defect that Ford is failing to adequately address. I request that the NHTSA investigate this issue and Ford's restrictive repair criteria, as this defect poses a significant risk to myself and the public on the road.

Vehicle transmission slips in lowers gears and will not shift to help the vehicle accelerate. This put the vehicle at stand still on busy roads and will present a hazard. Vehicle has approx. 86,000 miles. Called local Ford dealerships (all are weeks behind) and vehicle will more than likely need a transmission rebuild or new/reman transmission.

The truck has 55,000 miles on it. The truck shifted very harshly when slowing down creating a traction hazard. The harsh shifting cannot be mitigated by adjusting how it is driven. After a few days a wrench symbol appeared on the dash screen while driving on the interstate, I immediately drove the truck to the Ford dealership after the wrench symbol appeared. Code p07f7 was recovered. I was told that the torque converter is bad and the cdf hub is failing. I was told that the transmission will have to be replaced or rebuilt. The Ford dealerships own transmission specialist showed me how the faulty design is the cause for the break and showed me the new design Ford uses for the replacement parts.

I am reporting that the corporate Ford company is knowingly requiring a software update that minimizes a safety hazard instead of eliminating a safety hazard (NHTSA recall 26v237). Here are the facts: ---lebanon Ford service said that they cannot tell me what the software update 26s28 will do to fix the danger of driving my vehicle. The mechanic (michael) said that the software update is meant to fix the transmission molded lead frame, but that it does not. My research about this software update states that the truck will unexpectedly downshift to 4th gear (instead of downshifting to 1st gear without the update). This downshifting issue poses a danger to people driving on the highway! consider trucks suddenly downshifting to 4th gear in front of you on the highway (some towing)! Ford recall: 26n04 is a fix that will eliminate danger, but Ford is not fully implementing it! molded lead frame failure the issue: the internal wiring harness (the lead frame) holds the speed and temperature sensors. When it fails, it sends bad data to the computer. Symptoms: erratic shifting, a wrench light on the dash, or a check engine light with speed sensor codes. Unexpected downshifts (recall 26v-237) --this is the software update that does not solve the dangerous risk. On xxx, Ford did not complete the recall 26n04 (Ford #), only the NHTSA 26v237 software update, which does not eliminate dangerous driving on the highway. I am attaching the event information that I gave to lebanon Ford at the time of service. Although there was no crash and no casualties, I cannot, in good conscience, drive my 2016 Ford F-150 on the highway because Ford is only lessening the symptom, which is still a danger to people. Ford can fix the problem to eliminate danger, but they choose not to do so.

2019 f150 with 115,600 miles equipped with 10r80 transmission recently experienced a 10th gear shift down to 1st gear while doing 65mph down a bridge almost causing a really bad accident. Since then truck has randomly and sporadically shifted out of higher gears into lower gears I cannot afford to repair a factory defect.

I am writing to formally escalate my ongoing complaint regarding my Ford truck and the repeated problems I have experienced with it over the years. At this point, this is no longer simply a matter of dissatisfaction with a dealership repair. I am asking Ford motor company at the corporate level to take responsibility for reviewing the complete history of this vehicle and the repeated unsuccessful attempts to correct the problems I have experienced. Most recently, my truck was brought to **salem nh Ford on August 25, 2026, because of the ongoing powertrain malfunction and sudden loss-of-power problem**. This was the **fifth time** I have brought the truck in for this same ongoing powertrain problem. The dealership kept my truck for * full days**, from August 25 through September 4, 2026. During that time, Ford provided me with a loaner vehicle. I was eventually contacted by the dealership and told that my truck was ready to be picked up. I was also told that they believed they had fixed the powertrain problem. Unfortunately, that was not the case. ### the powertrain malfunction returned almost immediately after picking up my truck on **September 4, 2026**, I began driving it again. Then, on **September 7, 2026 — only three days after picking it up from Ford — the powertrain malfunction happened again**. This was extremely upsetting and frustrating. Ford had my truck for ten days. This was already the **fifth service visit for the same ongoing powertrain problem.

Transmission would go from 7th gear to 1st gear causing stalling in busy traffic. Also the truck would be stuck at 7th gear when coming to a stop light and when the light turned green would not shift down to one which caused a power loss. This is a known problem with Ford transmission, the dealership diagnosed the issue as a hydraulic circuit leak, which is caused by the cdf cylinder sleeve. This can be found in Ford TSB 25-2126.

I own a 2018 Ford F-150 equipped with the 10r80 automatic transmission. The vehicle currently has approximately 70,000 miles. The transmission has developed intermittent harsh shifting and, more concerningly, has repeatedly appeared to slip or disengage from gear while the vehicle is moving. On multiple occasions while driving at highway speeds, pressing the accelerator did not result in acceleration because the transmission was no longer effectively transferring power to the wheels. This caused a temporary loss of motive power while traveling in traffic. The transmission subsequently re-engaged. The vehicle has also stored diagnostic trouble code p0734, indicating an incorrect 4th-gear ratio. The transmission fluid has been serviced, the vehicle software is current, and an adaptive transmission relearn has been performed by a mechanic. The p0734 code and transmission symptoms returned after these measures. Ford has issued technical service bulletin 25-2475 for 2017-2020 F-150 vehicles equipped with the 10r80 transmission. The bulletin includes p0734 and harsh or delayed transmission operation and identifies axial movement of the cdf clutch-cylinder sleeve causing hydraulic circuit leakage as a possible cause. I am reporting this because the unexpected loss of propulsion at highway speeds creates a safety concern, particularly when merging, changing lanes, or traveling in surrounding traffic.