2010 6.2 issues with 4x4

[Todd Nunnally]

Had the check 4x4 light and wrench light on. Changed the transfer case switch motor as this had issues before. Did not help the situation.. in fact made it worse. Now the truck sounds like it has a supercharger on it and is registering 100mph at 50. Put the old motor back on and now same issue...
Thoughts???

 

[pat247]

It seems to be in 4L from what you describe. Does the switch activate the motor?

 

[FordTechOne]

Do you have ForScan? You’ll need to pull DTCs to see what type of fault is occurring. If the transfer case is physically stuck on 4L, replacing the shift motor will have no effect.

 

[Todd Nunnally]

It seems to be in 4L from what you describe. Does the switch activate the motor?

No... it was in 2h when I changed the motor

 

[Todd Nunnally]

Do you have ForScan? You’ll need to pull DTCs to see what type of fault is occurring. If the transfer case is physically stuck on 4L, replacing the shift motor will have no effect.

No on the scanner... it was in 2h when I changed it

 

[Todd Nunnally]

Have also come to the realization that the dash switch is bad...
Any way to get everything to reset without the dash switch

 

[FordTechOne]

Have also come to the realization that the dash switch is bad...
Any way to get everything to reset without the dash switch

The switch uses internal resistors to differentiate between modes. Values are as follows:

4L - 130 ohms
4H -270 ohms
2H - 619 ohms

So if you were to install a resistor in-line with the circuit, you may be able to get it to change modes. You can also remove the shift motor and turn the shift cam manually with a wrench.

 

[Todd Nunnally]

So update....
Replaced
1. Dash switch
2. Transfer case motor was ok
3. 2 iwe's
4. 1 cv axle
5. 2 hubs

Waiting on new transfer case as it is still stuck in 4 h