Using auto tow
Thread Starter
|
New User
Joined: Jan 2012
Posts: 2
Likes: 0
Using auto tow
We test drove two 2006 5.4 350 Super Duty's today. How do you know when you turn on the auto tow that it's working? In my 1999 I have now, the RPM increases when I turn it on. We didn't notice any RPM change when turning on/off the auto tow. Also drove a 2006 V10 and with that we saw the RPM change.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,741
Likes: 2,669
From: SE Florida
Do you mean tow/haul? Your '99 doesn't have a tow/haul mode. All it has is a button that turns off the overdrive gear.
In tow/haul the transmission upshifts at a higher speed than normal. It also downshifts much more aggressively and has engine braking. This is more noticeable with a load.
In tow/haul the transmission upshifts at a higher speed than normal. It also downshifts much more aggressively and has engine braking. This is more noticeable with a load.
Thread Starter
|
New User
Joined: Jan 2012
Posts: 2
Likes: 0
Yes, you are right, I mean the tow/haul. It's the button you push at the end of the automatic shift handle. Just confused though, why was it obvious when the button was pushed on the V10, and not at all noticable on either of the 5.4liters. The lights came on the dash so it looked like they were both activated. Thanks
Tuned
Joined: Oct 2006
Posts: 453
Likes: 12
Yes, you are right, I mean the tow/haul. It's the button you push at the end of the automatic shift handle. Just confused though, why was it obvious when the button was pushed on the V10, and not at all noticable on either of the 5.4liters. The lights came on the dash so it looked like they were both activated. Thanks
All things being equal, there should be no difference between the V8 or V10.
S
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,741
Likes: 2,669
From: SE Florida
There will be speed differences between the V8 and V10 when they shift. The torque curves are different so the shift schedules are different. If the trucks have different axle ratios that will change the speeds, too.
Thread
Thread Starter
Forum
Replies
Last Post
