Hello,

At the end of a recent trip, dragging the 7,000# travel trailer with my new 2022 F250, 6.7, as I came to a full stop at a traffic light there was a loud noise, like I ran over something BIG. At the next traffic light, it happened again, just as the truck downshifted into 1st. I set the tranny from Tow/Haul to Normal mode and it didn't happen again (2 or 3 more full stops). This was after about 4-5 hours and 240 miles of towing, over mostly high desert terrain at 70 mph (with a couple stops mixed in). I didn't think to check the tranny temp.

When I returned the trailer to storage yesterday, no hard downshift (was in Tow/Haul mode). Afterward I ran around town some, no issues.

This was the 3rd trip with the trailer, with flawless performance by the truck, which has just shy of 4,000 miles. About 1,500 miles of towing so far.

I had a 2015 F150 that had a hard downshift from 5th to 4th, the dealer re-flashed a module and fixed it. But it happened consistently until the fix.

Any ideas? With it being intermittent, is there anything that the dealer can diagnose? I will be taking a 2,000 mile RV trip here in a couple of weeks, and am a little nervous.

Thanks!

 

That hard downshift has been reported a number of times, mine has had it happen twice that I recall.
Time driving and towing helps as the trans is still learning since you still have so few miles on it.

I wouldn't worry unless it becomes a chronic issue.

 

It's these damn computer controlled transmissions and trucks. Back in the glory days you had hard shifts its because a vacuum hose came undone. All you had to do was plug it back or put a new house and it shifted smooth every time. Now days you have a shift issue you don't even know what the hell it cold be lol. The computer could jsut decided to take a crap that day and do a mis calculation since they try to predict your driving habit.

 

Thanks for the replies. I actually got the local service manager on the phone and he confirmed, it's probably due to the adaptive learning but to take it in if it becomes consistent.

 

Don't blame the computer, blame the person who wrote the logic. Computers do what humans tell them to do, just at a significantly faster rate.

OP - I've had a number of hard downshifts from 4 - 3 in my 2021 Power Stroke too. It's usually while coming up to a stop and the transmission is shifting from 5th to 4th, but stays in 4th for an extremely short period of time and tries to jam it into 3rd instead. I've watched it on the instrument panel do this. Gear 4 flashes for just a split second, then 3 and the hard shift occurs. IMO, the logic needs some tuning.

 

Mine does it every once in a great while going from 3rd to 1st coming to a stop.

 

Get it checked. My tranny was skipping shifts and was having some hard shifts, the hard shifts became very pronounced in the summer when pulling our 10,000# trailer. It would skip and have hard shifts even not pulling the trailer. When I took the truck in for its scheduled service after the summer I explained the issue and they tested and confirmed it. There was a Technical Service Bulliten about this and based on that they changed the main module in the tranny (or something like that). When they first did it the truck wouldnt even move so they had to keep it over night, next day they got it to move but the issue wasnt fixed. Told me I could take it home but I would have to bring it back in two weeks so they can rip the tranny apart and see what is causing the problem. I dropped it off Tuesday and got a voicemail yesterday saying I need a whole new transmission and I can keep the rental car for the 2-3 weeks it will take to get it and have it installed. I have a 2020 with 17,000km on it. I always tell myself not to get a first generation of anything and I traded in my 2019 superduty for this 2020 superduty, the 2019 had the 6 speed transmission and this 2020 is the first generation of the 10 speed transmission in these trucks if I am not mistaken...I should have known better.

 

This is almost identical to some of the issues I was having; get it checked!

 

Who would you recommend do the tuning? Is this something dealer checks. Or at this point is it best just get a tune from 5star etc.

 

Shouldnt have to pay a third party to tune a tranny on a $90K truck.

 

Aftermarket tuning will void the powertrain and engine warranty.

 

Oh I agree. But for the price 5 star tunes you might as well kill 2 birds with one stone. Get your truck shifting better and probably have an all around better tune than the dealer could ever do. But yes the warranty voiding would be a deal breaker for me.

 

same here with my 2018 6-spd with 40k miles. I don’t sweat it and will watch the forums to learn if I should think about it more.

 

I’m another one on my 2019 6.2 with 23K miles, when I get to a stop the moment i press the accelerator to restart I often get a jolt. Not always, but frequently enough to become very annoying…

 

2017 6.2- same on the 3 to 1 and the starting off. I'm going to clean and grease the splines on the driveshaft yolk and see if that quiets it down any.