pcrussell50
Active Member
- Joined
- September 27, 2012
- Messages
- 56
- Reaction score
- 7
- City, State
- socal
- Year, Model & Trim Level
- 1997 expolrer xlt
1997 explorer xlt, 4.6 sohc: transfer case permanently locked in 4wd
what i've done so far:
1] read a bunch of threads on here before i joined. it helped me learn a LOT about how the Awd system works on my car
2] went back and performed the proper process with the switch knob on the dash, for putting it back into "auto", where the transfer case should only lock if the system detects slipping--this did not work. with the switch in "auto" the case was locked and i got scrubbing on dry pavement
3] pulled the fuse for the 4wd system--this did work, but i could not live with it, because the power windows are on the same fuse. so i put the fuse back in, went under the car, and...
4] ...pulled the pigtail off the motor that actuates the transfer case lock--this worked. and now i can drive without scrubbing tires and stressing driveline. BUT, i want to fix this.
based on these steps, i think i can assume that the problem is not mechanical, because the the transfer case will lock and unlock and the motor that does this also works.
so i think the problem is electronic, with one of the sensors that tells the pcm to send a "lock" signal to the case-actuator-motor.
periodically, i get the the amber messages on the dash: "4wd" and "4wd lo" that flash a few times, then go away. either this is because i pulled the pigtail off the case-locker-motor, or the number of flashes is telling me which sensor has gone bad--i don't know which.
oh, by the way, the problem is not in the pcm/engine control computer, because i have swapped that out too, and the problem remains identical.
thanks, and HELP!
-peter
what i've done so far:
1] read a bunch of threads on here before i joined. it helped me learn a LOT about how the Awd system works on my car
2] went back and performed the proper process with the switch knob on the dash, for putting it back into "auto", where the transfer case should only lock if the system detects slipping--this did not work. with the switch in "auto" the case was locked and i got scrubbing on dry pavement
3] pulled the fuse for the 4wd system--this did work, but i could not live with it, because the power windows are on the same fuse. so i put the fuse back in, went under the car, and...
4] ...pulled the pigtail off the motor that actuates the transfer case lock--this worked. and now i can drive without scrubbing tires and stressing driveline. BUT, i want to fix this.
based on these steps, i think i can assume that the problem is not mechanical, because the the transfer case will lock and unlock and the motor that does this also works.
so i think the problem is electronic, with one of the sensors that tells the pcm to send a "lock" signal to the case-actuator-motor.
periodically, i get the the amber messages on the dash: "4wd" and "4wd lo" that flash a few times, then go away. either this is because i pulled the pigtail off the case-locker-motor, or the number of flashes is telling me which sensor has gone bad--i don't know which.
oh, by the way, the problem is not in the pcm/engine control computer, because i have swapped that out too, and the problem remains identical.
thanks, and HELP!
-peter