5 Spd Auto Tranny Operating Procedure
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Senior User
Joined: Apr 2005
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From: Pensacola, FL
5 Spd Auto Tranny Operating Procedure
Have you noticed how when some things go wrong, they kind of sneak up on you and you're unaware until a significant event occurs?
That happened with the transmission in my '06 F-350 (24,000 miles)
Over some time I began to notice the beginning of a hard initial engagement after starting up for the day (no load, empty, in normal drive)
I wrote it off to cold engine high rpm until two weeks ago when,after hooking up my 12K 5er and in Tow/Haul, I experienced abrupt and harsh down shifts into first as I slowed to a stop for lights and stop signs. Then a few days later (not towing) I put it in Tow/Haul and experienced very harsh upshifts to final drive.
That did it for me. Took it to Ford service who reflashed my tranny with an upgrade. What a significant difference! Initial engagements are soft,up shift points are now noticeably at lower speeds, and all engagements are very smooth.
Now to the point of question.
The service tech told me to never use Tow/Haul unless working a load. Must confess I have used it a lot in the past just for grins. So what's the scoop? Nothing in the owner's manual states that I shouldn't.
Is there a tranny guy out there to shed some smart thoughts on this?
(sorry for the long post)
Thanks
That happened with the transmission in my '06 F-350 (24,000 miles)
Over some time I began to notice the beginning of a hard initial engagement after starting up for the day (no load, empty, in normal drive)
I wrote it off to cold engine high rpm until two weeks ago when,after hooking up my 12K 5er and in Tow/Haul, I experienced abrupt and harsh down shifts into first as I slowed to a stop for lights and stop signs. Then a few days later (not towing) I put it in Tow/Haul and experienced very harsh upshifts to final drive.
That did it for me. Took it to Ford service who reflashed my tranny with an upgrade. What a significant difference! Initial engagements are soft,up shift points are now noticeably at lower speeds, and all engagements are very smooth.
Now to the point of question.
The service tech told me to never use Tow/Haul unless working a load. Must confess I have used it a lot in the past just for grins. So what's the scoop? Nothing in the owner's manual states that I shouldn't.
Is there a tranny guy out there to shed some smart thoughts on this?
(sorry for the long post)
Thanks
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
I bet all they did was initialize your tranny so it will go through relearn. Does it say a tranny flash number on your reciept?
I use T/H often loaded and unloaded for engine braking down some big hills here, never had a problem, he is talking out his butt on the issue of not using unless loaded IMO.
I use T/H often loaded and unloaded for engine braking down some big hills here, never had a problem, he is talking out his butt on the issue of not using unless loaded IMO.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,722
Likes: 2,648
From: SE Florida
The service tech told me to never use Tow/Haul unless working a load. Must confess I have used it a lot in the past just for grins. So what's the scoop? Nothing in the owner's manual states that I shouldn't.
Is there a tranny guy out there to shed some smart thoughts on this?
Is there a tranny guy out there to shed some smart thoughts on this?
