Shift on the fly question
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Freshman User
Joined: Mar 2013
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From: LaGrange, Oh
Shift on the fly question
I just bought a new to me '05 F350 Super Duty FX4 with the auto trans. I have seen this term "shift on the fly" and I am assuming it means that you can shift into 4x4 hi while the vehicle is moving. Am I correct in that and if so what is considered to be a safe speed to shift.
I also have a '95 F350 5.8L with manual hubs and I would often leave the hubs locked in for the winter and shift into 4x4 while the vehicle was moving but tried to keep the shifting speed down to no higher than 40mph or so. I really don't have a good reason for that it just seemed like a good idea to me.
Thanks for the help for this 6.0 newbie.
I also have a '95 F350 5.8L with manual hubs and I would often leave the hubs locked in for the winter and shift into 4x4 while the vehicle was moving but tried to keep the shifting speed down to no higher than 40mph or so. I really don't have a good reason for that it just seemed like a good idea to me.
Thanks for the help for this 6.0 newbie.
Postmaster
Joined: Aug 2015
Posts: 3,910
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From: NW IA
Not sure there is a right or wrong answer. I've always made sure I was around 30 mph or less when engaging with no wheel spin, just a habit I guess.
If I was at cruising speed and then no longer needed 4X4 then I don't care what speed I disengage as long as it's not uphill.
If I was at cruising speed and then no longer needed 4X4 then I don't care what speed I disengage as long as it's not uphill.
2006 Bullet-Riddled 6.0
Joined: Sep 2011
Posts: 651
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From: Sac River Delta Ca.
That is correct you want to let off the gas pedal then flip the switch into 4x4. I don't think theres any speed limit for shifting into 4High. Just don't want to be under load climbing a hill etc.. It will shudder hard on you if you do.
2006 Bullet-Riddled 6.0
Joined: Sep 2011
Posts: 651
Likes: 5
From: Sac River Delta Ca.
There you go, I was up in the mountains a few weeks ago and we were going up a slight grade at night and it was icy and I didn't see it till I went sideways at about 30mph. I had light throttle when I flipped it to 4 High and I got a growl and a shudder when it kicked in. OOOps my son looked at me funny with a that didn't sound good comment.
So I threw him out in 10* weather and kept going. lol
So just remember no throttle when you shift into 4x4 and the truck wont care.
So I threw him out in 10* weather and kept going. lol
So just remember no throttle when you shift into 4x4 and the truck wont care.
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RotGrubestier44
1987 - 1996 F150 & Larger F-Series Trucks
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Nov 30, 2005 03:16 PM
