Brown Wire Mod

[trippn01]

so navy....you give it a go?

 

[nvycrmn]

as for hydroplaning, you can do that just as easily in AWD as you can in 2wd. just depends on your speed. i agree smooth, AWD is good to have but not very necessary. we dont really get a whole lot of rain here so i dont need it. im used to midwest weather so a little rain here and there doesnt really bother me...heheh

as for pulling the fuse, not yet. i will be doing that very soon though and i will let you know what i come up with.

 

[trippn01]

ok...well i pulled the fuse,and yes,it does disengage the awd....but also the 4hi and 4lo...so today i am gonna try to pull the wire....hopefully all goes well...lol...and where in the midwest were you from?...im in toledo,oh. right on the mich. border...so a lil rain,snow,sleet,hail...hell even flooding and tornadoes im used to...lol

 

[nvycrmn]

im originally from michigan. about 45 mins north of grand rapids. i figured pulling the fuse would disable all of it. i will have to try and track this brown wire down and see what i can come up with.

 

[trippn01]

lol...grand rapids,not to far from me at all.....as far as this "brown wire",i dont seem to have one...i got 4 wires coming off the switch...from left to right they are "light bue with red stripe-blue-dark blue-and black.....so any ideas anyone?

 

[nvycrmn]

let me talk to one of my buddies who is an electrical god when it comes to expys. ill see what he says.

 

[nvycrmn]

so this is what my contact had to say, and trust me, he is VERY REALIABLE...

"With how the transfer case is on our trucks, you can cut that wire, but it is still going to leave it in AWD. The transfer case is set up to be on 5% of the time with now power applied. So, you will just not feel the transfer case engage when you have slippage. More of a hassle than it is worth in my book. But, it is up to you."

 

[trippn01]

something i was tossing around was wiring a 30amp toggle switch into the fuse....that would still kill the awd,but allow me to turn it back on with the switch.....idk..just a thought.

 

[nvycrmn]

i have thought about doing the same but i dont think it will completely disable the AWD will it? and if it does, you are disabling your 4wd as well. but then again, its on a toggle so shouldnt matter right? i think it could work.

 

[panda24619]

well if its just a simple fuse and if it works. try it on dirt from a dead stop and poeple around to see, then if u ever need 4x4 put the fuse back. its a pain but itll work. or just make a toggle switch for it. that should also work. but make sure theres an inline fuse for the switch.

 

[drtj]

when yall do this take pics. It has caught my attention.

 

[86caprirs]

Yes. I would like to see this one too. I don't like AWD. I like to select when I go into 4x4 if I need it. If it does go out of AWD then I am in. If it does not then that is alot of work for nothing.

 

[slo-ryd]

I want the ability to disable it for a reason not mentioned.
Say I'm out on the road and one of these 35" tires goes flat or blows out....
I will only have a 265/70/17 spare to put on and the drivetrain will be pissed and/or damaged running the 1 smaller diameter tire no?

 

[86caprirs]

I will have to look into it and see how it stays on even with the wire cut. Maybe a different transfercase will work? One without AWD

 

[nvycrmn]

from what i have heard, as posted on page 1, you will not be able to fully disable the
A4WD on these transfer cases unless you put in a new switch and ecu to put it into 2wd. and im not even sure if you can do that with ours, you might have to replace the whole transfer case.
slo, as for you, you would defintely have problems running 2 different size tires if you had a blow out. if i were you, get a tire that is equally as tall (doesnt have to be as wide) that you can run as a spare. you can get them from a used tire shop pretty cheap. can even mount it on the stock spare rim.

 

[86caprirs]

Yeah. I have been looking at the EVTM and Shop manual for the 2002 EXPED for the brown wire mod. I am just wondering that if no power is tranfered to the coil, then how it will engauge? Or how is the coil locking the clutches when it is not activated. It looks like in the awd position there is resisted current sent to the coil that can , i guess engauge the coil then the TOD will intervien and run the supplied voltage to the coil causing the lock up it needs on "slip" from the front and rear input shaft sensor readings. But disconnecting the brown wire should give it no power to the coil causeing an open.

I guess the only way I would be able to tell is if I remove the wire from the harness connector at the transfercase and run the expedition on my hoist. If it is still engauged then it would be a transfercase thing. And thats where a non AWD transfercase could theroretically could be installed. Then when you switch to awd, it would not be able to activate a coil that now does not exist giving you a 2wd mode. In therory of course.

 

[slo-ryd]

Ok, just clipped the light brown wire going to the top of the transfer case, backed the rear of the truck in water and spun the 35's sitting still.
I don't care if a4wd works again so I just capped both ends of the cut wire.
4hi and 4lo still work normally.

 

[86caprirs]

I think I removed the brown wire from my trans harness that goes into the transfercase. The front wheels still go round and round.

 

[nvycrmn]

did you guys put this on a lift to test it? to make sure that you are truely in 2wd and that the 4wd still works?

 

[slo-ryd]

did you guys put this on a lift to test it? to make sure that you are truely in 2wd and that the 4wd still works?

I had mine on a lift and after cutting the wire the front tires would still spin in the air. However, they don't pull on the ground because the rear tires will now spin on wet pavement with no reaction from the front tires, just like a 2wd truck.
4Hi and 4Lo work normally.