Mechanics

4 WHEEL DRIVE

1998 Ford F-150 • V8 4WD Automatic • 134,000 miles

Have a 1998 Ford F150 xlt 4x4-has 134000 miles-I have put a new elec. Shift motor on tranfer and also put two new senors on the firewall-but still goes into 4 wheel drive by its self. I can take the shift motor off of tranfer case and lock it in using pilers on the shaft that sticks out of tranfer case and works fine also can drive it around fine in 2 wheel drive without it on transfer case. Soon as I put it back on the transfer case it does the same - it goes to 4 wheel by it self. Any help or thoughts on this problem?
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Autfan
December 16, 2010.




Try this. When the 4x4 system is bound up it sometimes stays stuck in 4x4. Jacking the front wheels off the ground releases the bind and allows you to shift back into 2Hi. The electric motor doesn't have enough torque to move the shift forks.


Tiny
Fixitmr
Dec 16, 2010.
CHECK FOR CODES
CHECK MODE SWITCH
4WD Mode Switch Input Resistances

Mode Switch Position Resistance (Ohms)
2-Wheel Drive 4100-3700
4WD HIGH 1050-1150
4WD LOW 380-340
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BMRFIXIT
Dec 16, 2010.

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