I have a 99 Exp. with torque on demand transfer case that is giving me grief. It wants to stay in 4hi like it is continually sensing wheel slip. My question is can I swap it for a t-case from an F-150 that dosnt have the T.O.D.? And if so do i need to swap the computer as well? Any info is much appreciated.

 

Just remove fuse #104 from the fusebox under the hood. Doing so will prevent power from reaching the front clutch, so you will never get 4WD.

 

Thanks for the reply, but that dosent realy solve my problem.

 

I don't understand why it doesn't help with your problem? With fuse #104 out it will stay in 2WD and not kick into 4hi.

 

I am with Alloro here . Why does it not help with your problem. To change the transfer case you would also have to change the front axle assy. to one with the vacuum engagement stuff . Most likely some more electronic stuff and maybe the GEM.
The fastest easy way IS what Alloro suggested .
You might also look into the brown wire mod.

 

Sounds like he wants to retain 4WD, not disable.

 

That is correct, I need to fix the prob, not hide it. my front axle dose have a vacuum operated actuator on it, why would i need to replace it?

 

I am not familiar with the torque on demand, so correct me where I am wrong.
My take is if this system has a control switch , as my 96 explorer had , which switched the system from 2x4, to tod.auto , you should be able to change the transfer case .

The rest of the components are in place already, and if you get a manual tc. There should be no other components to change.
If you get the esof. Transfer case, I am guessing , that you will have a gem module to change , as well as the related switch

Ford did in most cases include the major eelectrical harness

 

Well apparently some one has already swapped in a front axle with vacuum actuators on it or you have the only 99 with factory one installed one on it . I believe Ford stopped doing that in 1998.
The brown wire mod does not disable 4WD only control it in a way similar to a manual system for very little effort and almost no money.

 

Thanks for all the reply's, they are helpful. Some Expeditions had a 4 place switch on the dash. 2wd, A4wd, 4hi, and 4low. Mine only has a 3 place switch A4wd, 4hi, and 4low. I dont know much about this system and how it works or its components. The brown wire mod seems like it may be an option but I dont know if it will by-pass the torque on demand (which is what i would like to get rid of) or not.

 

That's why alloro WAS helping you out.....................

 

The brown wire mod cuts into the power wire for the front clutch going to the transfer case and places a switch in series. With the switch set to Off you have only 2WD regardless of where the dash selector switch is set. With the switch turned On the 3 position selector switch on the dash takes control.

 

I have a 99 expedition and has three positions on the selector switch all-wheel-drive four-wheel-drive and four-wheel-drive low my transfer case needs to be replaced I have one from a 99 Ford F1 50 however on the dashboard of it it's 2 Wheel Drive, four-wheel-drive ,four-wheel-drive low ,can I swap these two without having any problems