firefighter407
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- Oct 26, 2008
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any idea how i could check if the 4x4 kicks in after swappng switches?
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The problem with the mod, is that when you disconnect the brown wire, you still have AWD. All you have done is prevented it from locking up if it detects that you might be slipping. If you disable the the AWD system you accomplish a whopping, NOTHING. All that effort to do something that could be otherwise accomplished by pulling a fuse.
To clarify, let me explain in breif how the AWD system works. Inside the transfer case is a planetary unit. This unit transfer approximately 30% of the torque to the front wheels. This planetary has a lockup feature. There are sensors that tell the AWD computer about the wheel speeds. If it detects more than a certain amount of speed differential between the two driveshafts, it locks the planetary into a 1:1 ratio. In the 4HI position, it just locks the planetary all the time. When you switch it into 4LO, it runs everything through a different gear to alter the shaft speed. So when you disable the brown wire, what you do is prevent the case from going into lockup, but even without lockup, about 30% of the torque is still being transfered into the front wheels, and you are still in AWD.
(1999 Expedition All wheel drive)
Are all Expeditions in my mode range All Wheel drive or is there some with the selection of 2 wheel, 4wheel high and low models T-case’s?
I like to play a little in the snow and light the wheels up and kick the rear out from time to time! Lol
Is there any mods I can do to disengage the All Wheel drive and make it have a selection of 2wd only? I don’t mind having to get under it to select or disengage it.