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I guess it is a commonly occurring thing. My dealership's transmission guy determined that the vibration I was feeling looks like my problem too. He says in the last few months he replaced 4 of these suckers under Ford's warranty which applies to my situation too.

Thank you to those of you who warned me regarding the issue.
I was getting dangerously close to the expiration limit of my warranty at 56,600.

Appointment is set for July 2nd :D
 

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Mine just went in. It takes a little practice and time to recreate the rumble so I’m a little worried the mechanic will blow it off and I’ll be stuck with a $200 bill for the NPF diagnosis. At least I will have a paper trail in case the TC grenades after the warranty expires.

They should be pulling the driveline for my second giubo replacement so if they’re that deep into it they might as well inspect the transmission.
 

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Mine has 128000 miles, I 've taken mine to the dealership several times to get repairs . as of today they have blamed it on torque coverter again
I have had the coupler changed and the drive shaft or front half of it changed and still no fix. come to find out I found a user on here with the same issue who got his whole transmission replaced by ford at the dealer in Canada at Grimsby ford. after engineers saw the problem after he had many issues with shaking and slipping and others. they too also believe it was torque converter and now he has a fix.
I called ford again today and was told they would request the dealer take and do whatever to repair the van. ill post an update asap

2015 transit 150xlt passenger medium roof

Ryan Burgener on forum
Update-late last week I got the word that they are going to now replace the complete transmission. This was only after they installed the second new torque converter, rebuilt the transmission, 3 transmission control modules, harness changes. The mechanic said he was all ready to give me back the van but 60km in on a test drive is messed up again. So ford engineering actually came down and looked at the vehicle. They decided to pull the trigger on a complete new transmission. They are telling me its a minimum two week wate for a new transmission to even arrive. When will this ford nightmare be over? They have had my vehicle for over two months this time. In the last year I have had this truck it spent 2/3 of the year in the dealership.

The transmission has been working perfectly since they installed the brand spanking new one. I was so lucky to find a great dealership that was willing to push Ford to replace the complete unit. Ford wanted to try a few more fixes and the dealership pressured the engineers to come out and look at my van. The dealership that made the magic happens was Grimsby Ford in Grimsby Ontario Canada. They are a small dealership that is big on customer service. The owner himself talked to me about the van and said no matter what it takes they will get this thing fixed....and he did. It took a bit but they do have to follow the process the Ford engineering requests. I would recommend this dealership to anyone in fact most of all my friends and family have switch to this dealership. I will never go back to the east end Hamilton for dealer that I have purchased many of my vehicles from. From now on its only Grimsby Ford
 

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EDIT: finally got an answer. They have at least started work, unclear quite how deep they’ve gotten. Sounds like the driveline has been dropped so they’re probably going after the giubo.
 

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I'm taking mine in on Monday for the replacement.
When I left my van with them they couldn't replicate it and wanted to bill me $175 for their time, but were very agreeable and had me come out and drive with the gray-haired gearhead trans specialist and I got it in the "sweet spot" where the engine revs 50-100rpm and there's a vibration, but the speed doesn't change. He was like "Oh yeah, that's the torque converter". That was a month ago. I arranged to have them procure all the parts and schedule a whole day where it can be on the lift before I brought it in for replacement. I'm told if everything goes well I can pick it up Monday at closing, but more likely Tuesday afternoon. All under warranty; now at 57200! Cutting it close.

An added bonus: since they have to drain the trans fluid, I get a trans fluid replacement! Or at least most of it.

I recommend anyone approaching the end of their powertrain warranty to closely observe their van for torque converter problems. In my case, and others, it is at about 2100rpm in 6th gear with a slight load (going up a hill or into the wind), there is a vibration that feels like the rumble strip next to the highway white line, and during that vibration the rpm's go up although the speed is constant.

Anecdotally, the first time I really noticed it was after the guibo replacement. But not immediately.

Also, the gearhead asked if I did transport back and forth to Reno (from SF Bay Area). Evidently a lot of fleet Transits that do that route daily have failed torque converters.Of the people with failed TC's, how many did mountain trips on a regular basis? I'm talking actual mountain passes with at least 5000' of elevation gain, not 2000' hills.
 

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I'm taking mine in on Monday for the replacement.
When I left my van with them they couldn't replicate it and wanted to bill me $175 for their time, but were very agreeable and had me come out and drive with the gray-haired gearhead trans specialist and I got it in the "sweet spot" where the engine revs 50-100rpm and there's a vibration, but the speed doesn't change. He was like "Oh yeah, that's the torque converter". That was a month ago. I arranged to have them procure all the parts and schedule a whole day where it can be on the lift before I brought it in for replacement. I'm told if everything goes well I can pick it up Monday at closing, but more likely Tuesday afternoon. All under warranty; now at 57200! Cutting it close.

An added bonus: since they have to drain the trans fluid, I get a trans fluid replacement! Or at least most of it.

I recommend anyone approaching the end of their powertrain warranty to closely observe their van for torque converter problems. In my case, and others, it is at about 2100rpm in 6th gear with a slight load (going up a hill or into the wind), there is a vibration that feels like the rumble strip next to the highway white line, and during that vibration the rpm's go up although the speed is constant.

Anecdotally, the first time I really noticed it was after the guibo replacement. But not immediately.

Also, the gearhead asked if I did transport back and forth to Reno (from SF Bay Area). Evidently a lot of fleet Transits that do that route daily have failed torque converters.Of the people with failed TC's, how many did mountain trips on a regular basis? I'm talking actual mountain passes with at least 5000' of elevation gain, not 2000' hills.
Failed torque converter can cause the transmission to overheat. But transmission overheating, I believe, can cause torque converter failer too.
So if the vans he is seeing regular for torque converters are ones that do the mountain passes maybe there is the link.

It would be great if everyone who is having this issue can tell us their engine, if they do heavy hauling or mountain passes, when they had the guibo replaced, and when they changed out the transmission fluid. Maybe get a pattern?
 

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Failed torque converter can cause the transmission to overheat. But transmission overheating, I believe, can cause torque converter failer too.
So if the vans he is seeing regular for torque converters are ones that do the mountain passes maybe there is the link.

It would be great if everyone who is having this issue can tell us their engine, if they do heavy hauling or mountain passes, when they had the guibo replaced, and when they changed out the transmission fluid. Maybe get a pattern?
There are 3 other threads about this, Starting about 3 years ago, Only recently has this noise been attributed the torque converter and Not the driveshaft.

https://www.fordtransitusaforum.com...n/60498-driveshaft-drone-noise-survey-13.html
 

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For seat of the pants diagnostic, the difference would be vibration under load, not coasting at same speed. I also have a thrumming sound around 1500rpm, but it's not a vibration, and it happens both coasting and under load.
 

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I have a suspicion that my van is not at the dealership, rather an independent transmission shop that is subcontracted to do the work. It would explain why nobody seems to be able to tell me anything about the progress and it took 5 days for anyone to even look at it. The service manager mentioned he was communicating with the mechanic via text.

I don’t haul at max GVWR or do any heavy towing over high mountain passes (well, once) and I never got any indication that the transmission was overheated like burnt fluid smell or a warning light.
 

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This is a bit disconcerting...
This isn't just random people joining this site to tell us their torque converter horror story. Several of you have been here a long time. Plus the stories of mechanics seeing several of these in their shop.
I only have 36,000 miles on mine but my warranty started March 2015. I have till next March before the 5 years is up.
 

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Perhaps a preventative measure would be a tranny fluid flush and change before "scheduled maintenance" is recommended. And an aftermarket trans fluid cooler added in line. I don't know if overheating is the source or if poor design is the source of the TC problems, though. Does anyone know what other vehicles this TC is used on? If it came from minivans instead of pickups, it might not be robust enough for the task of a 3 ton vehicle.

Which also begs the question; with the new 10-speed tranny for 2020, is there also a different torque converter?
 

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This is a bit disconcerting...
This isn't just random people joining this site to tell us their torque converter horror story. Several of you have been here a long time. Plus the stories of mechanics seeing several of these in their shop.
I only have 36,000 miles on mine but my warranty started March 2015. I have till next March before the 5 years is up.
.
Will be informative to see how various extended warranties respond to possible claims.
.
 

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This is the exact same transmission used in the F150. 6r80. It's a really good transmission.
Just gets a different tcm program?

The only thing that seems to ve truly different is the guibo...however you spell that lol

That or it has been overheating because the radiator is not adequate.
 

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This is the exact same transmission used in the F150. 6r80. It's a really good transmission.
Just gets a different tcm program?

The only thing that seems to ve truly different is the guibo...however you spell that lol

That or it has been overheating because the radiator is not adequate.
is it the same torque converter, though?
 

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Careful with part numbers. The first half is generic. #7902 might be the catch all for torque converter. It's the second half that will show the difference. You need the VIN to get the right part.
 

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I had to take my van back for them to scan to get the correct small part for either the trans or the tc; there are differences between various years or engine combos evidently. Funny that such info isn't available via a build sheet connected to the VIN on a database. But maybe this shop has experience with Ford and such lists, and doesn't trust it because of wrong parts indicated before. Afterall, it's Ford Motor Company, which still uses antiquated software and novices to run it's website and other software-based features, and has UAW members on some assembly lines and in QC. They are like having a walkie-talkie in a smartphone world.
 
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