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Seeking advice from any members who have brought their truck into Ford for 10r80 transmission issues

oarsirhc

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Hello All!

Long time lurker, first time poster. I took delivery on a 2023 Ford Ranger Lariat Splash Jungle Edition back in November from Carvana. From the get go, I noticed the transmission was just strange but I really fell in love with the truck other than that. I had my mechanic look over the truck via a prepurchase inspection and it passed with flying colors. The only issue he brought up was the carrier bearing was fried and attributed some of the strange drive line feel to the loose drive shaft. From here I did some basic maintenance; front and rear diff fluid change, oil and filter change, and transfer case fluid change. Before winter hit I also put on a new set of tires and had the road force balanced. Now having the truck for a few months I've gotten a much better feel for how the transmission acts and the peculiar things it does. Being under warranty I wanted to bring it to Ford to assure there isn't a glaring issue before I put more money into the truck with a tune, one piece drive shaft and new suspension.

The following issues are what I'm seeing consistently. I'm just unsure if these will be remedied by a one piece drive shaft, or something simple like a transmission fluid change. I just want to rule out an actual transmission failure before I'm out of warranty. Truck has 45,000 miles and was built December 2022 but I've heard conflicting information if the "fixed" transmissions were used at this point. Some say anything built passed August 2022, and some say January 2023+. Anyway, what I'm seeing is:

-On cold mornings, below 10 degrees my first shift will be very harsh with a 1-2 second delay. After this first shift, everything shifts like normal. This makes me think the dirty transmission fluid plus being viscus due to the cold is causing the gear not release smoothly until warmed up.
-When shifting from 3-4 there is a slight delay with a noticeably abrupt gear catch, very similar to driving stick shift and not catching the gear at the right RPM. This happens consistently despite weather or temperature probably 80% of the time. It's also worse going up hill
-By far the most noticeable and annoying is when slowing down to a stop and the truck releases the final gear I feel a hard bump, almost as if someone tapped my bumper. This is consistent 95% of the time despite how i brake. I can slow down abruptly, slowly, uphill or downhill but every time I can feel the last gear release and "pop" the truck forward. On top of that, all downshifts are always more noticeable than upshifts
-When creeping in traffic the truck lightly bucks back and forth. This is barely noticeable but it is for sure there as even passengers notice. I've tried creeping with my foot lightly on the brake, on accelerator or off both pedals but I still feel it the same. This issue I feel may be related to excess driveshaft slack.
-I need to be careful when going from drive to reverse, because if I do it too fast the feel a harsh shove in the cabin from the drive line. This as well, I think could be related to the slack in the driveshaft with crapped out carrier bearing
-I know there are TSBs to be referenced about this issue but I see a lot of outdated numbers being posted. Does anyone have the latest TSBs to reference about the transmission or where to find them?
-Are there any certain things I should mention to the techs to look for? I know each dealership is a mixed bag in terms of service and how they diagnose issues but I'm hoping to help guide them if they claim "truck drives normal"

THANK YOU to anyone who read all this. I absolutely love the truck other than the strange transmission/drive line issues. If Ford deems everything as it should be my next steps are to replace the transmission fluid and filter followed by a one piece drive shaft before tuning and suspension work. Any advice or feedback is welcomed, and happy to be a part of the community!

EDIT: Forgot to add I did also do spark plugs and DPFE sensor during maintenance
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RangerBill

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Hello All!

Long time lurker, first time poster. I took delivery on a 2023 Ford Ranger Lariat Splash Jungle Edition back in November from Carvana. From the get go, I noticed the transmission was just strange but I really fell in love with the truck other than that. I had my mechanic look over the truck via a prepurchase inspection and it passed with flying colors. The only issue he brought up was the carrier bearing was fried and attributed some of the strange drive line feel to the loose drive shaft. From here I did some basic maintenance; front and rear diff fluid change, oil and filter change, and transfer case fluid change. Before winter hit I also put on a new set of tires and had the road force balanced. Now having the truck for a few months I've gotten a much better feel for how the transmission acts and the peculiar things it does. Being under warranty I wanted to bring it to Ford to assure there isn't a glaring issue before I put more money into the truck with a tune, one piece drive shaft and new suspension.

The following issues are what I'm seeing consistently. I'm just unsure if these will be remedied by a one piece drive shaft, or something simple like a transmission fluid change. I just want to rule out an actual transmission failure before I'm out of warranty. Truck has 45,000 miles and was built December 2022 but I've heard conflicting information if the "fixed" transmissions were used at this point. Some say anything built passed August 2022, and some say January 2023+. Anyway, what I'm seeing is:

-On cold mornings, below 10 degrees my first shift will be very harsh with a 1-2 second delay. After this first shift, everything shifts like normal. This makes me think the dirty transmission fluid plus being viscus due to the cold is causing the gear not release smoothly until warmed up.
-When shifting from 3-4 there is a slight delay with a noticeably abrupt gear catch, very similar to driving stick shift and not catching the gear at the right RPM. This happens consistently despite weather or temperature probably 80% of the time. It's also worse going up hill
-By far the most noticeable and annoying is when slowing down to a stop and the truck releases the final gear I feel a hard bump, almost as if someone tapped my bumper. This is consistent 95% of the time despite how i brake. I can slow down abruptly, slowly, uphill or downhill but every time I can feel the last gear release and "pop" the truck forward. On top of that, all downshifts are always more noticeable than upshifts
-When creeping in traffic the truck lightly bucks back and forth. This is barely noticeable but it is for sure there as even passengers notice. I've tried creeping with my foot lightly on the brake, on accelerator or off both pedals but I still feel it the same. This issue I feel may be related to excess driveshaft slack.
-I need to be careful when going from drive to reverse, because if I do it too fast the feel a harsh shove in the cabin from the drive line. This as well, I think could be related to the slack in the driveshaft with crapped out carrier bearing
-I know there are TSBs to be referenced about this issue but I see a lot of outdated numbers being posted. Does anyone have the latest TSBs to reference about the transmission or where to find them?
-Are there any certain things I should mention to the techs to look for? I know each dealership is a mixed bag in terms of service and how they diagnose issues but I'm hoping to help guide them if they claim "truck drives normal"

THANK YOU to anyone who read all this. I absolutely love the truck other than the strange transmission/drive line issues. If Ford deems everything as it should be my next steps are to replace the transmission fluid and filter followed by a one piece drive shaft before tuning and suspension work. Any advice or feedback is welcomed, and happy to be a part of the community!
Some of what you describe could indicate that the driveshaft spline is sticking and needs lubrication.
 

airline tech

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I think most of your issues are from a bad DPFE sensor and or MAP sensor, the DPFE and or associated moisture is contributing to transmission shift points being thrown off, the Calculated Load - drives the shift points - The MAP sensor is a key factor in (Calculated Load) if the DPFE is feeding inaccurate EGR flow the MAP sensor reading is not providing a correct (Calculated Load)
So, I would shift focus off of the transmission being the issue for now and focus on the control aspect that provides the shift points, I am not saying its not the transmission but by your issues its leading more towards the control side (inputs)
 
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oarsirhc

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Some of what you describe could indicate that the driveshaft spline is sticking and needs lubrication.

Thank you, sounds like a point for driveshaft vs transmission issue
 
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oarsirhc

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I think most of your issues are from a bad DPFE sensor and or MAP sensor, the DPFE and or associated moisture is contributing to transmission shift points being thrown off, the Calculated Load - drives the shift points - The MAP sensor is a key factor in (Calculated Load) if the DPFE is feeding inaccurate EGR flow the MAP sensor reading is not providing a correct (Calculated Load)
So, I would shift focus off of the transmission being the issue for now and focus on the control aspect that provides the shift points, I am not saying its not the transmission but by your issues its leading more towards the control side (inputs)

Really important detail I left out was I did replace the DPFE sensor as well spark plugs during maintenance. The truck drove a bit smoother, but nothing remarkable. Thank you for the input though
 


airline tech

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Have you performed a Live Data Drive and or recorded live data for the Exhaust Pressure Sensor, EGR Desired and DPFE Voltage and Pressure as well as the MAP Sensor readings and the EGRT reading.
Taken at KOEO - IDLE and Driving - this is where I can see if the system is operating normally.

I want to know if the (MAP) and (Exhaust Pressure) sensors match the (BARRO) reading at KOEO
I want to know what the DPFE reads at (KOEO & IDLE) both voltage and pressure and then with a Live Data Drive - what does the Desired EGR read when the EGR Event triggers and then the response to the DPFE and MAP and EGRT readings during the EGR Event (Flow) cycle daring Light Cruise this will a quick event - plus add Vehicle Speed and RPMs to the PID list - these are the main PIDs to monitor to see what the EGR system is doing
 
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oarsirhc

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Have you performed a Live Data Drive and or recorded live data for the Exhaust Pressure Sensor, EGR Desired and DPFE Voltage and Pressure as well as the MAP Sensor readings and the EGRT reading.
Taken at KOEO - IDLE and Driving - this is where I can see if the system is operating normally.

I want to know if the (MAP) and (Exhaust Pressure) sensors match the (BARRO) reading at KOEO
I want to know what the DPFE reads at (KOEO & IDLE) both voltage and pressure and then with a Live Data Drive - what does the Desired EGR read when the EGR Event triggers and then the response to the DPFE and MAP and EGRT readings during the EGR Event (Flow) cycle daring Light Cruise this will a quick event - plus add Vehicle Speed and RPMs to the PID list - these are the main PIDs to monitor to see what the EGR system is doing

I have not, this is the first I've heard of it. This is GREAT advice, I'll definitely look into it.
 

Chris M

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At 45,000 miles I had to have the transmission rebuilt. I was prepared to pay the diagnostic fee for the transmission TSB, but since they found defects the rebuild was necessary and they ate the fee for the diagnostic.

What you describe sounds to me like some of the symptoms I had.
 
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oarsirhc

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At 45,000 miles I had to have the transmission rebuilt. I was prepared to pay the diagnostic fee for the transmission TSB, but since they found defects the rebuild was necessary and they ate the fee for the diagnostic.

What you describe sounds to me like some of the symptoms I had.
Glad you got yours taken care of before warranty. Do you happen to remember the TSB referenced?
 

airline tech

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The reason for me pushing to another issue outside of the transmission TSB’s is that you have a 2023 and are not included in the known CDF drum issue - you have the new design already
 

ScarzRanger21(2.0)

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I think most of your issues are from a bad DPFE sensor and or MAP sensor, the DPFE and or associated moisture is contributing to transmission shift points being thrown off, the Calculated Load - drives the shift points - The MAP sensor is a key factor in (Calculated Load) if the DPFE is feeding inaccurate EGR flow the MAP sensor reading is not providing a correct (Calculated Load)
So, I would shift focus off of the transmission being the issue for now and focus on the control aspect that provides the shift points, I am not saying its not the transmission but by your issues its leading more towards the control side (inputs)
Just reading this made me question… I replaced the DPFE sensor in my truck a while ago but it’s still not shifting great. Almost exact symptoms as the original post in this thread. Harsh shifting from 3-4, slamming into gear during downshifts, etc. Mine is a 2021 and I’m on the fence between taking it into a dealership or replacing more sensors to try and see if it helps. Is the MAP sensor also something I should swap?
 

ScarzRanger21(2.0)

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Just reading this made me question… I replaced the DPFE sensor in my truck a while ago but it’s still not shifting great. Almost exact symptoms as the original post in this thread. Harsh shifting from 3-4, slamming into gear during downshifts, etc. Mine is a 2021 and I’m on the fence between taking it into a dealership or replacing more sensors to try and see if it helps. Is the MAP sensor also something I should swap?
I guess a better question to ask would be what all should I try to change before I take it in? The only one I’ve replaced is the DPFE sensor.
 

RangerBill

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Just reading this made me question… I replaced the DPFE sensor in my truck a while ago but it’s still not shifting great. Almost exact symptoms as the original post in this thread. Harsh shifting from 3-4, slamming into gear during downshifts, etc. Mine is a 2021 and I’m on the fence between taking it into a dealership or replacing more sensors to try and see if it helps. Is the MAP sensor also something I should swap?
Those symptoms are internal transmission issues. Engine sensors won't cause those issues.
 

Chris M

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The reason for me pushing to another issue outside of the transmission TSB’s is that you have a 2023 and are not included in the known CDF drum issue - you have the new design already
I forgot about that!
 

Chris M

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Glad you got yours taken care of before warranty. Do you happen to remember the TSB referenced?
Not specifically.
I will see if I can find it but the point has been made that your model year is outside the TSB and your transmission is supposed to be better built than ours.
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