Sorry to bug everyone. I have a 2nd gen truck. What is the difference between shift on the fly and shift on demand? Any issues with either?

 

No one has any idea?

 

Shift on the fly = Shift into 4wd while in motion (the controll **** has 3 settings, 2wd, 4wd lock, and 4wd low)

Shift on demand = Shifts into 4wd automatically when the traction controll system detects slip. (the controll **** has 3 settings, Auto, 4wd lock, 4wd low)


Someone correct me if I am wrong. I'm pretty sure thats how it workd.

-TheChad

 

Shift on the fly means you can shift into 4wd while going down the road, Just dont shift into 4wd lock or low,
Shift on demand mean's the same thing I think?
Or maybe it means you can just reach up and shift it.????

 

I think shift on the fly and shift on the demand are the same thing. I wonder if it has to do with manual shift versus electronic push button?

4 x 4 (4WD) - Describes a vehicle with four-wheel drive. The first figure is the number of wheels. The second is the number of powered wheels.
4 x 2 (2WD) - Refers to a two-wheel drive vehicle with four wheels. The first figure is the number of wheels. The second is the number of powered wheels. With a 4x2, engine power is transmitted to only two wheels, usually the rear.
Part-Time 4WD - Refers to a four-wheel drive system that operates on-demand and drives all four wheels by locking front and rear axles together via a shift lever. It usually includes two speed ranges (Hi and Lo). Part-time 4WD systems must be operated in 2WD mode on dry pavement, as they're designed to be used only in specific situations when extra traction is required.
Full-Time 4WD - Describes a four-wheel-drive system that can be operated continuously on all surfaces. A full-time four-wheel-drive system may include the option of part-time operation (allowing you to shift into 2WD on dry pavement for example), and may or may not have Hi and Lo speed ranges.
Automatic Four-Wheel Drive (A4WD) - This type of drive system automatically engages 4WD as needed. When internal monitors sense differences in individual wheel speeds, indicating that a tire is slipping, then 4WD is automatically engaged.
Shift on the Fly - This type of system allows manual shifting from 2WD to 4WD Hi without coming to a stop. Most systems have a speed limit at which you can engage the system; typically it's under 60 mph.
All-Wheel Drive (AWD) - A full-time single-speed system designed to supply drive power to all four wheels. The percentage of front/rear power delivery varies from system to system.

 

2nd Gen forum might be a better place to get an answer.

 

I'm asking about it here because only 3rd gen truck have it. We (2nd gen trucks) just have the old lever.

So again, no definite answer on the difference? Thanks Jeffjs, but I understand different drive options.

If I read correctly in one post, does the shift on demand have 4AUTO? Or is this like the jeeps with 4 full time and 4 part time?

Anyone know??

 

Chad is right, except the shift on demand transfer case has 4 settings 2 hi, 4 auto, 4 hi, 4 lo This is what is on my truck.
It is part time 4wd

 

the difference is in the shift on demand. operated like any other 4x4 with shift on the fly, but it has a 4 auto setting, that is computer controlled shifting the traction "on demand" when it is needed.

 

My '03 has the lever. Although it's a straigt forward/back pull instead of like on my '96 Ram where I think 4 lo was off to the side and down.