4x4 shift on fly not working
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4x4 shift on fly not working
i have a 2000 f 350 larat pickup the 4x4 shift on the fly stopped working do any of you have a good idea where i should start my search in troubleshoting ? the local dealer gave me some line of bull .they just didnt want to futz with it .help its jist starting to feel like snow aroung here in the east thanks
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on MY model year :
u can always manually switch to 4x4 at the hubs...
(and you should do that periodically to make sure the hubs don't lock up on auto.... just to free up the dial)
first I would suspect vacuum leak on the lines to the hubs,
second, electrical from the switch to the actuators...
good luck... sure it's not something uwant to be laying out in the snow to check....
but it is what it is
u can always manually switch to 4x4 at the hubs...
(and you should do that periodically to make sure the hubs don't lock up on auto.... just to free up the dial)
first I would suspect vacuum leak on the lines to the hubs,
second, electrical from the switch to the actuators...
good luck... sure it's not something uwant to be laying out in the snow to check....
but it is what it is
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Joined: Sep 2003
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From: KS
Originally Posted by bonsiguy
i have a 2000 f 350 larat pickup the 4x4 shift on the fly stopped working do any of you have a good idea where i should start my search in troubleshoting ? the local dealer gave me some line of bull .they just didnt want to futz with it .help its jist starting to feel like snow aroung here in the east thanks
If the light does not come on: check switch/fuses, wires, & transfer case motor.
If the light does come on: you have a hub problem. Turn the hubs to lock/manual to get you out of trouble. Check switch/fuses, wires, & vacuum lines.
At least once a month it is a good idea to engage/disengage the ESOF 4x4 system. Per the Ford mechanics I know, the biggest reason why ESOF fails is due to under use. Only using it in the winter time is not enough.
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the lites are not comming on the transfer case is not shifting .i have checked the fuze .i pulled the switch on the dash to see if a plug fell off when i changed my dimmer switch ,another problem the dealer messed up they said it was the bulbs go figure all going at once . after reading some past posts im thinking its a solinoid falure was just wondering troubble shooting tests i dont like to replace good parts with new costly ones thanks
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From: Stephensville WI
This is why I have manual hubs and a manual tranfer case. No one (Ford, GM or Mopar) has made ESOF or automatic hubs that are worth a hoot.
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The shift motor on the transfer case can be taken off and bench tested. Just take some jumper wires off a 12 volt source, and touch to the two terminals on the motor. reverse the wires to run the motor the other way. If the motor runs in both directions, then check for binding on the transfer case shaft. Take a wrench and manually shift the transfer case in and out of gear. Mine was binding once. After engaging and disengaging a couple times it has worked like a champ. Also check for vacuum at the pump and canister. I found I have a vacuum leak behind my a/c controls. If I turn it to off, it hisses, if set to a vent setting it's ok. This condition kept the hubs on my truck from locking, as well as the vac. pump continually running. The dash light gets its signal off the transfer case motor sensor. Hope this helps.
Postmaster
Joined: Jan 2005
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From: Phenix City, AL
Before you worry about yanking the shift motor out of there, first check to see if the connector to it is loose. That has been know to happen quite often.
It may have just not been plugged all the way in from the factory and not wiggled itself loose.
Next, I would have someone else in the truck and have them turn it to 4wd. If you hear the shift motor turning, you more than likely may have stripped the plastic gear the engages the trasfer case.
It may have just not been plugged all the way in from the factory and not wiggled itself loose.
Next, I would have someone else in the truck and have them turn it to 4wd. If you hear the shift motor turning, you more than likely may have stripped the plastic gear the engages the trasfer case.
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