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4A issues. ford says this is normal?

BigMeatsBronco

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Its barley over $150 (for parts)to simply replace the clutch packs in the T case, and it can be done with the transfer case still on the truck... least of my worries!
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broncobase1

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No, there is zero documentation that states what he just said. To the contrary, not only does Ford documentation say there's no problem leaving it in 4A, Ford engineers have come out and said that it's perfectly fine to run it in 4A for the life of the vehicle.

What you're seeing are forum keyboard engineers whose expressing their feelings. And as we all know, feelings trump facts, right?
How do you know the "Ford Engineers" you are quoting are really Ford Engineers? And if they are Ford Engineers did they design and engineer the transfer case? Real "Engineers" almost never interface with the public, PR and management types do that work. "Its okay to run 4A on dry pavement" could easily be translated to its okay to run 100% of the time when that is not the intent. Not only that, is the so called "Ford Engineer" paying for maintenance and servce? Is he guaranteeing the transfer case and drive line is going to last 300K miles like it should? Bottom line why intentionally run 4A on dry pavement? No system is perfect and its pretty obvious this is not a true AWD system like a Subaru.
 

BigMeatsBronco

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How do you know the "Ford Engineers" you are quoting are really Ford Engineers? And if they are Ford Engineers did they design and engineer the transfer case? Real "Engineers" almost never interface with the public, PR and management types do that work. "Its okay to run 4A on dry pavement" could easily be translated to its okay to run 100% of the time when that is not the intent. Not only that, is the so called "Ford Engineer" paying for maintenance and servce? Is he guaranteeing the transfer case and drive line is going to last 300K miles like it should? Bottom line why intentionally run 4A on dry pavement? No system is perfect and its pretty obvious this is not a true AWD system like a Subaru.
How is it obvious? Just because it also has low range? have you disassembled both? The wet clutches are there for this EXACT reason. I've had these Borg Warner cases apart, and I understand the way they work. Maybe you should tear one down, then come back and give us your educated opinion.
 

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...for you.

Now look at the big world around you, and consider that Ford sells to that big world.
You have a point, but I think if you want full time AWD a Subaru is a better choice than a Bronco or truck with a transfer case. 4A is a compromise between AWD and traditional 4WD. I chose Bronco over an AWD SUV because I did not want full time AWD and its problems, for example having to change all 4 tires at the same time to keep the diameter the same. Bottom line, why not run 2H on dry pavement and run 4A only if things are or could be slippery?
 

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I understand your point, but 4A works fine most of the time on all surfaces. I am approaching the point where I am confident that 4A can tolerate full time daily use.

There is some chatter/drag at low speed high steering angles that can be induced, but it doesn't appear to be a problem from the standpoint of reliability (n of 2). The easiest answer is to keep it in 2H if you are not happy with the low speed behavior.
But why would you want or need to be in AWD all the time, too much effort to push a button when needed? lol
 

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BigMeatsBronco

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You have a point, but I think if you want full time AWD a Subaru is a better choice than a Bronco or truck with a transfer case. 4A is a compromise between AWD and traditional 4WD. I chose Bronco over an AWD SUV because I did not want full time AWD and its problems, for example having to change all 4 tires at the same time to keep the diameter the same. Bottom line, why not run 2H on dry pavement and run 4A only if things are or could be slippery?
Alright now you've gone and compared the lowly Scoobarroo with the almighty Bronco...Thems fighting words!!! 🤮 Sorry but no subie will EVER compare. They are inferior in nearly every way.🥺

The Broncos T case is the BEST design available.
 

BadlandsA51

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just curious, is there some ford documentation that states what you just said above?

because when I was at the offrodeo, I asked that question and the answer was that other than lower gas mileage, there is no downside to staying in 4A all the time.

And there is this from another B6G thread: https://www.bronco6g.com/forum/threads/updated-check-4x4-warning-alert-4a.32371/post-1083077
There isn’t anything written to say that 4A can’t be used all the time, because theoretically it can be. For sales and marketing purposes it’s good to say you can set it to 4A and leave it there and not have to understand when to use 4 wheel drive. A good portion of people who own Broncos, and any other 4x4, have absolutely no idea how they work. I know that from my 35 years as a Field Service Engineer at Ford and my last 8 years as shop foreman at a Ford dealer.

But just because you can leave it in 4A all the time doesn’t mean it’s the best thing to do.
 

BadlandsA51

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No, there is zero documentation that states what he just said. To the contrary, not only does Ford documentation say there's no problem leaving it in 4A, Ford engineers have come out and said that it's perfectly fine to run it in 4A for the life of the vehicle.

What you're seeing are forum keyboard engineers whose expressing their feelings. And as we all know, feelings trump facts, right?
I was a Field Service Engineer with Ford for 35 years before I retired 8 years ago and went to a Ford dealer as the shop foreman. In my time at Ford I saw 4 wheel drive go from a shifter in the floor with manual hubs to auto locking hubs, to push button on-the fly, to torque on demand 4A systems, and AWD systems.

On any of the systems that had a driving clutch in the transfer case, that was the most likely place to have a problem. And the problems were usually chattering and binding in sharp turns, which is when the clutch has the greatest speed difference between front and rear axles to deal with.

I’m not telling anyone not to drive their Bronco in 4A all the time if, for some reason, they feel strongly about it. It’s none of my business what they do with their truck. I’m just trying to give a little advice to those who don’t have the understanding of their vehicle that I have, or the experience to help them not to have unnecessary problems.
 

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How is it obvious? Just because it also has low range? have you disassembled both? The wet clutches are there for this EXACT reason. I've had these Borg Warner cases apart, and I understand the way they work. Maybe you should tear one down, then come back and give us your educated opinion.
Good point, if you tore one down you know more than me. It is however a lot different than a Subaru type system, which is designed for full time because it cannot be turned off. So yes I'm making some assumptions. I still don't see a reason to use 4A on dry pavement.
 

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broncobase1

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Alright now you've gone and compared the lowly Scoobarroo with the almighty Bronco...Thems fighting words!!! 🤮 Sorry but no subie will EVER compare. They are inferior in nearly every way.🥺

The Broncos T case is the BEST design available.
I agree, my sister owns a Subaru and they are not that great when it comes to realbility. Plus the flat engines are a PIA to work on and more expensive.
 

broncobase1

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There isn’t anything written to say that 4A can’t be used all the time, because theoretically it can be. For sales and marketing purposes it’s good to say you can set it to 4A and leave it there and not have to understand when to use 4 wheel drive. A good portion of people who own Broncos, and any other 4x4, have absolutely no idea how they work. I know that from my 35 years as a Field Service Engineer at Ford and my last 8 years as shop foreman at a Ford dealer.

But just because you can leave it in 4A all the time doesn’t mean it’s the best thing to do.
Bingo -- you hit the nail on the head with this comment.
 

BadlandsA51

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How do you know the "Ford Engineers" you are quoting are really Ford Engineers? And if they are Ford Engineers did they design and engineer the transfer case? Real "Engineers" almost never interface with the public, PR and management types do that work. "Its okay to run 4A on dry pavement" could easily be translated to its okay to run 100% of the time when that is not the intent. Not only that, is the so called "Ford Engineer" paying for maintenance and servce? Is he guaranteeing the transfer case and drive line is going to last 300K miles like it should? Bottom line why intentionally run 4A on dry pavement? No system is perfect and its pretty obvious this is not a true AWD system like a Subaru.
That’s exactly right. As I said in an earlier post, sometimes sales and marketing people say what they want to say to make the product appealing to certain customers.
If they say something that is not true, like you can run in 4HI all the time, engineering will dispute that aggressively. They can be held partially responsible for the resulting warranty expense. But if it’s grey, like running 4A all the time, it’s not worth the fight with the sales side of the company. And, any problems resulting from sales recommendations will probably occur post warranty, so no skin off their nose.

As stated in other posts, this isn’t a “keyboard engineer” stating his opinion, I was a field service engineer at Ford for 35 years.
 

BadlandsA51

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You have a point, but I think if you want full time AWD a Subaru is a better choice than a Bronco or truck with a transfer case. 4A is a compromise between AWD and traditional 4WD. I chose Bronco over an AWD SUV because I did not want full time AWD and its problems, for example having to change all 4 tires at the same time to keep the diameter the same. Bottom line, why not run 2H on dry pavement and run 4A only if things are or could be slippery?
Yep, and don’t make the assumption that AWD doesn’t have concerns. Ford sells several models that have AWD and we see clutch failures in the RDUs regularly. Different circumference tires, a low tire, towing one with the front wheels up and rear wheels down, or just worn out from mostly city driving. Any type of 4 wheel drive doesn’t make sense on dry pavement, with one exception, performance front drive cars, like a Taurus SHO. They are AWD so if you get on it from a stop they don’t spin one front wheel and cause a loss of steering control. They send the torque to the rear wheels under those conditions.
 

BadlandsA51

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I just watched a couple videos from a couple of years ago, a tech who very very very clearly knew absolutely nothing about this but insisted he was the expert. And when called out on it, and when confronted with the facts, his clear lack of understanding of the product, and the documentation, he not only doubled down on his ignorance--he called people names because they weren't joining him in his world of ignorance.
You mean I can’t believe everything on YouTube?!?!?!!!!
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