Yay! My First retard issue in my FX4!!!
Senior Member
Joined: Jun 2007
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On dry pavement/good conditions you will always have binding in 4 wheel drive, it's not AWD, which is a completely different system. Don't want binding in 4 wheel drive? Take it off road and get it in the dirt 
. It's not your CV's or anything else, it's simple how 4 wheel drive works, do some research on how to use it and how it works 
. It's not your CV's or anything else, it's simple how 4 wheel drive works, do some research on how to use it and how it works
Senior Member
Joined: Mar 2008
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From: Northeast
I was just wondering if there was such a thing, might be nice to use 4x4 in the winter a little more. Almost like AWD.
Can some confirm these trucks have CV joints and not just U joints? As U joints would explain the binding and CV joints eliminate this.
Can some confirm these trucks have CV joints and not just U joints? As U joints would explain the binding and CV joints eliminate this.
Last edited by Cooper443irty; Sep 2, 2008 at 09:10 PM.
Technical Article Contributor
Joined: Apr 2007
Posts: 3,807
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From: Pearl Harbor
the binding isn't due to u-joints. These trucks have u-joints and CV joints. The binding is due to the 4x4 system itself
I have a convential 4x4 (Ford F-150) and a AWD with 4x4 selectable (Dodge Durango). In AWD, the Durango acts perfectly fine. But in 4x4Lock and 4x4Lo, the Durango does exactly what any other 4x4 does.
How They Work
I have a convential 4x4 (Ford F-150) and a AWD with 4x4 selectable (Dodge Durango). In AWD, the Durango acts perfectly fine. But in 4x4Lock and 4x4Lo, the Durango does exactly what any other 4x4 does.
How They Work
AWD: the center diff has a clutch setup (most vehicles) that sends 60% backwards and 40% forwards. The rear drives 99% of the time. The fronts only get power when there is a difference in wheel speed (aka...rears spinning, fronts not). This causes friction in the diff clutch pak and power is transferred....exactly like a Limited Slip in your rear axle. Reverse all of that for FWD designed vehicles (Pilot, Escape)
when the awd turns it's wheels, the center diff allows the rears to spin at a different speed than the fronts. there is no driveline torque developed since the clutches can dissipate it to other wheels.
when the awd turns it's wheels, the center diff allows the rears to spin at a different speed than the fronts. there is no driveline torque developed since the clutches can dissipate it to other wheels.
4x4: rear wheel drive at all times. the transfer case has 2 positions. 4x2 or 4x4. in 4x4 it mechanically locks the drivetrain into a 50/50 split. Since there are no clutches here, the front wheels spin exactly the same speed as the rear wheels at all times reguardless of what you are doing
now, when you turn, the front wheels will rotate at different speeds than the rear tires. this causes binding inside the drivetrain since they are mechanically locked together. On dirt, this binding is released through wheel spin. On pavement, this binding causes wheel hop, studdering and broken stuff.
now, when you turn, the front wheels will rotate at different speeds than the rear tires. this causes binding inside the drivetrain since they are mechanically locked together. On dirt, this binding is released through wheel spin. On pavement, this binding causes wheel hop, studdering and broken stuff.
Technical Article Contributor
Joined: Apr 2007
Posts: 3,807
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From: Pearl Harbor
same reason your rears don't bind. unless you buy a high end FWD or a "sporty" FWD car, they are all open carrier. So the tire with the least traction has the most power applied
