1st timerw/ 4wd problem
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Joined: Oct 2006
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1st timerw/ 4wd problem
01 f250- i went through the normal hub and bearing problem, i had lost my 4 wheel drive, and repaired the bearings and put warn lock-ins on-everything was fine. at about 170k i lost my tranny, had her rebuilt, everything was fine. one day i noticed that the 4-wheel indicator light came on without the switch being on. this went on and off for a while and the 4-wheel drive quit working. now when i turn the switch on i still have no 4-wheel and the indicator light wont even come on anymore. can anybody tell me where to start? thanks
Senior User
Joined: Nov 2003
Posts: 176
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From: Alberta, Canada
Start at the transfer case shift motor.
The dash indicator represents the position of the transfer case motor only, there is no indication of operation of the hub vacuum.
Check voltages at the connector of the trannsfer case motor.
If you remove the motor you can also apply 12v to it to the pins to check the movement of the motor.
With the motor off truck, you can crank the transfer case with a socket wrench (3/8 square drive I think) to selection of the 4x4 (2wd-4HI-4LO) and this should light the dash light (with ignition key turned part on).
Be sure to mark the position of the crank nub and the motor spindle BEFORE you play with it so you can put the motor back on afterwards!
On my 2000 F250 I found the motor was powered and turning but the plastic worm gear inside had stripped, so it was making the noise of moving but not actually turning tha transfer case nub.
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The dash indicator represents the position of the transfer case motor only, there is no indication of operation of the hub vacuum.
Check voltages at the connector of the trannsfer case motor.
If you remove the motor you can also apply 12v to it to the pins to check the movement of the motor.
With the motor off truck, you can crank the transfer case with a socket wrench (3/8 square drive I think) to selection of the 4x4 (2wd-4HI-4LO) and this should light the dash light (with ignition key turned part on).
Be sure to mark the position of the crank nub and the motor spindle BEFORE you play with it so you can put the motor back on afterwards!
On my 2000 F250 I found the motor was powered and turning but the plastic worm gear inside had stripped, so it was making the noise of moving but not actually turning tha transfer case nub.
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