Auto Transmission Shifting Issues
#211
I dont remember the exact date but I believe it was middle of November.
#212
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.
#213
#214
#215
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.
#216
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.
#218
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.
#219
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.
#220
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...
#221
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!
#222
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.
#224
#225
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.