My 99 Expedition is having gem induced problems, I was wondering if anyone knows if I can replace it with one from an F-150, or an Explorer. Would this get rid of the A4WD and leave me with only 2h 4h and 4L, if so Im ok with that. Never really liked the Auto anyway. Thanks for reading and any help you can advice you can offer.

 

You can just pull the fuse for the A4WD system and have a 2WD.

 

Thanks for the replete. I did this as a Band-Aid but would like tohl have the option of 2wd and 4wd as I see fit. Would like to get rid of the auto.

 

Then you can install a remote switch on the power circuit the fuse is feeding.

 

I like it. An override to the AFWD "slam".

 

The gem module is forcing the transfer case into 4L. Will the remote switch also resolve that also

 

Some of the experts can chime in on this, but I think it is unlikely it is going into 4L. You can't get into 4L unless you are in neutral.

 

No, installing the switch will cut power to the front clutch and to the shift motor, but once you turn the switch on and the shift motor powers up, you'll be right back to where you are now.

Are you sure the problem isn't with the selector switch on the dash telling the GEM to go to 4L?

 

I think you can go in and out of 4L also if you're moving less than 5 MPH. I'll have to look into that.

 

The way I understand it will go into 4L at 5mph or less and in neutral. But mine tried while pulling a friends camper at 40mph. Once I got it pulled over the grinding stopped and it locked into 4L. The 4X4 light on the dash was flashing but the switch was still in the A4WD position. It would not come out of low range until I restarted it but then it was still in 4H. I disconnected the shift motor and it went back to 2wd, even the hubs unlocked.

 

AND the BOO switch activated!

Oh..... locking hubs, eh?

You put those on yourself?

 

I assume there are auto locking hubs, I don't know a whole lot about the 4wd system. All I know is after I disconnected the shift mot.or I heard something disengage and it is no longer in 4wd and does not bind up in tight corners