TOD 4wd high idea

[SGT.BATGUANO]

It may be a Pulse Width Modulated signal, like the speed signal, which is why no one has come up with a soultion to the top speed limiter of our ecu.

I may be wrong, but I've been under the impression that you can use a dc motor controller on a pwm circuit. So, I'm wondering if one could replace the rheostat or variable resistor on the dc controller board with a 4-position switch and four fixed value resistors.

[mbeach]

four fixed value resistors.

Finding the appropriate values would be the tough part here. I suppose that could be done with a meter and the truck up on a chassis lift -but I wouldn't want to be the guy to try it out.

[mbeach]

The Ford guys (who also use a variant of TOD) seem to be all over this one. Look around on the Explorer forums and you'll see some interesting discussions.

Maugan,
I understand your enthusiasm for the stock TOD, as it is just fine for 99% of VX drivers. I (and others) are of that dissatisfied 1% however. I have issues with a system that is not truly ON DEMAND. When I am driving down a snow covered slope (like my driveway) I DEMAND 4hi -yet I do not get it until a rear wheel slips. By then it could be too late. A fall from the driveway of my new house could be fatal. Therefore, I want -no, I DEMAND control of my drivetrain when I want it.

[VehiGAZ]

I agree with mbeach on the limited value of the VX's TOD system on snow. It kind of works, of course, but I hate the way it kicks in full 4WD for all of a couple tenths of a second, then it's right back to 2WD. When accelerating from a stop on a snow-covered road, it makes for a jerky, skidding run. I'd be happier if it stayed in full 4WD for a few seconds after kicking in, even. I will hopefully do the select-a-TOD-mode modification to the TOD computer wiring before this winter - it will allow me to get the system to stay in 4-High when I want it to. That's how I want to drive on a snow-covered road... in full 4WD-High.

But while I dislike the TOD system's dynamics on snow, I quite like the way it works on dirt and gravel roads. There's a fun one near where I live that I can absolutely FLY down like a pro rally driver with the TOD system doing its thing perfectly.

[Maugan_VX]

mbeach,

I realize the need for true 4hi. I don't see where I said it wasn't a valued addition to our vx's.

Actually, I just said that I would love to be able to have a control on my dash that would dial in the trq to the front. 15%,50%,100% or whatever it is.

Thing is, I don't want to rip apart my vx to figure it out

[psychos2]

bobmumgaard, i believe that when in 4 lo the clutches are not used. shawn

[mbeach]

mbeach,

I realize the need for true 4hi. I don't see where I said it wasn't a valued addition to our vx's.

Actually, I just said that I would love to be able to have a control on my dash that would dial in the trq to the front. 15%,50%,100% or whatever it is.

Thing is, I don't want to rip apart my vx to figure it out

If I had a few more minutes to spare in my day, I'd be glad to tear my VX apart. Like I said, not enough time to make it happen. A TOD control knob would be absolutely awesome (similar to the old Ford RS200 rally cars'). I must make this happen at some point. If I cannot, it'll be a 5-speed + old school T-case swap for me. Since I've quit smoking, my right hand is running out of things to do when I'm driving.

[VehiGAZ]

Someone posted a wiring diagram here for how to modify the inputs & outputs of the TOD controller to allow for a selector switch to be used to decide how the transfer case should operate. From what I remember, it gave you the ability to install a rotary switch that could force the TC into either rear-only, normal TOD, or 4WD-high. That's not quite what some of you are looking for, but it's pretty close.

[VX922]

"Someone posted a wiring diagram here........"

Check my old posts
http://www.vehicross.info/gallery/sh...php?photo=6686