Auto Transmission Shifting Issues
Senior User
Joined: Sep 2010
Posts: 161
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From: WI
I dont remember the exact date but I believe it was middle of November.
Posting Guru
Joined: Apr 2004
Posts: 1,399
Likes: 1
From: Corinth, TX
most modern service busses (not sure if this one qualifies or not) allow multiple channels of queue access, sometimes multiple queues to better organize and compartmentalize the messages. For example, it would make sense to me (again, this is speculation) for the PCM, TCM, and BCM to have their own queues, with a common controller separating messages when necessary. messages could be submitted directly to a specific queue, or to the common queue for observation by multiple agents.
This concept is used for lots and lots of things in today's technological world. I don't know that it is used in the same way for our trucks, but I'm relatively certain that it's a very close facsimile.
Senior User
Joined: Aug 2010
Posts: 107
Likes: 2
From: Arizona
Just in case anyone is keeping count, let me get on here as saying that I am having the same problem with my 2011 F350. I've had this truck for 6 months and it has happened about 5 times. Seems like it only happens when cold or sitting for at least an hour.
Tuned
Joined: Aug 2010
Posts: 482
Likes: 28
From: Southern Ontario
I am seeing slips going from 2 to 3 when cold and first drive of the day. Also to a lesser degree I see the random behavior in up and down shifting. Took it into the dealer and for the 2 to 3 slip on first drive they suggested to first put it into reverse to charge the direct clutch. Don't have to drive in reverse just shift into it and leave it until you feel it bite into gear. The pressure in the trans will climb to some 500 psi. Does this sound right to anyone? I will try it and see.
Senior User
Joined: May 2008
Posts: 251
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I am seeing slips going from 2 to 3 when cold and first drive of the day. Also to a lesser degree I see the random behavior in up and down shifting. Took it into the dealer and for the 2 to 3 slip on first drive they suggested to first put it into reverse to charge the direct clutch. Don't have to drive in reverse just shift into it and leave it until you feel it bite into gear. The pressure in the trans will climb to some 500 psi. Does this sound right to anyone? I will try it and see.
Senior User
Joined: May 2008
Posts: 251
Likes: 0
Not sure what you mean by video tape it... All FORD is saying that if you put it in reverse (R) before you start driving after a cold soak, that this (should) help with the shifting from 2 to 3.
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Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
In that case, they can record it happening such as what Byram did.
Mine is random.
I can drive the exact same way after a failed shift and the truck runs flawlessly.
I change my driving style and it runs flawlessly.
Every once in awhile, it will have an "event."
I don't know about this reverse work around.
Two events ago, I backed out of my driveway (so I was moving).
Seven miles later I had the slip with high rev then shift.
This was after driving 15 or so miles (I explained this in more detail several pages back).
I remember using reverse leaving because normally I backup to park when I get home but was about to leave again so I didn't park as I do normally.
Also my coolant and transmission temp gauges were at half so my truck was certainly warmed up.
Senior User
Joined: May 2008
Posts: 251
Likes: 0
Some of the guys here can reproduce this problem without an issue.
In that case, they can record it happening such as what Byram did.
Mine is random.
I can drive the exact same way after a failed shift and the truck runs flawlessly.
I change my driving style and it runs flawlessly.
Every once in awhile, it will have an "event."
I don't know about this reverse work around.
Two events ago, I backed out of my driveway (so I was moving).
Seven miles later I had the slip with high rev then shift.
This was after driving 15 or so miles (I explained this in more detail several pages back).
I remember using reverse leaving because normally I backup to park when I get home but was about to leave again so I didn't park as I do normally.
Also my coolant and transmission temp gauges were at half so my truck was certainly warmed up.
In that case, they can record it happening such as what Byram did.
Mine is random.
I can drive the exact same way after a failed shift and the truck runs flawlessly.
I change my driving style and it runs flawlessly.
Every once in awhile, it will have an "event."
I don't know about this reverse work around.
Two events ago, I backed out of my driveway (so I was moving).
Seven miles later I had the slip with high rev then shift.
This was after driving 15 or so miles (I explained this in more detail several pages back).
I remember using reverse leaving because normally I backup to park when I get home but was about to leave again so I didn't park as I do normally.
Also my coolant and transmission temp gauges were at half so my truck was certainly warmed up.
OK gotcha.. Yeah mine is completely random so can't reproduce at will... At this point I'm just going to wait for the new flash/TSB and see what happens. Suppose to be out in a couple weeks. Ford is apparently well aware of the issues and hopefully the TSB will address.. Keep your fingers crossed...
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
Another manual mode 2-3 shift failure with TCS off today merging onto a busy 50 mph highway.
This one did not correct itself and it wouldn't shift into third at all even coasting.
I had to upshift it to 4th to get the transmission to find a working gear.
I was out of gear for at least 6 seconds before 4th took over.
That's a long time if you think about it.
Busy road and while I would have had plenty of time had it shifted, I could have caused a wreck today but thanks to the fast acting driver behind me that was averted.
I like to use manual mode on this road so I can control my shifts in the busy traffic better but even that fails me now.
I know you're working on this Ford but we need this fix soon!
This one did not correct itself and it wouldn't shift into third at all even coasting.
I had to upshift it to 4th to get the transmission to find a working gear.
I was out of gear for at least 6 seconds before 4th took over.
That's a long time if you think about it.
Busy road and while I would have had plenty of time had it shifted, I could have caused a wreck today but thanks to the fast acting driver behind me that was averted.
I like to use manual mode on this road so I can control my shifts in the busy traffic better but even that fails me now.
I know you're working on this Ford but we need this fix soon!
Posting Guru
Joined: Oct 2010
Posts: 1,777
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Another manual mode 2-3 shift failure with TCS off today merging onto a busy 50 mph highway.
This one did not correct itself and it wouldn't shift into third at all even coasting.
I had to upshift it to 4th to get the transmission to find a working gear.
I was out of gear for at least 6 seconds before 4th took over.
That's a long time if you think about it.
Busy road and while I would have had plenty of time had it shifted, I could have caused a wreck today but thanks to the fast acting driver behind me that was averted.
I like to use manual mode on this road so I can control my shifts in the busy traffic better but even that fails me now.
I know you're working on this Ford but we need this fix soon!
This one did not correct itself and it wouldn't shift into third at all even coasting.
I had to upshift it to 4th to get the transmission to find a working gear.
I was out of gear for at least 6 seconds before 4th took over.
That's a long time if you think about it.
Busy road and while I would have had plenty of time had it shifted, I could have caused a wreck today but thanks to the fast acting driver behind me that was averted.
I like to use manual mode on this road so I can control my shifts in the busy traffic better but even that fails me now.
I know you're working on this Ford but we need this fix soon!
One thing that stays, regardless of temperature is the 4/5 upshift clunk. On the upshift, it will clunk during normal acceleration. Heavier acceleration and it seems to want to go from 4/5/6 without the clunk.
New User
Joined: Nov 2010
Posts: 6
Likes: 0
Nothing like this from my dads truck. I drive it quite a bit and after reading on here about transmission problems I have paid very close attention to the transmission and I have not noticed any bad manners or missed shifts or anything. Truck has 3700 miles, usual transmission oil temp on start up is 37 degrees.