4x4 problems
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4x4 problems
I have a 2001 F250 Superduty that is stuck in 4 wheel drive. The switch does not seem to have any affect on it. I have checked the switch with an ohm meter it seems to be working right. The indicator lights in the cluster panel does not light up to let you know what mode it is in, but they do light up when you start the engine. I can put the hubs in auto and it seems to be free wheeling except the transfer case is still turning the front output shaft, lock the hubs and it pulls on front axel. I took it to a local dealer to have it checked and they told me that I would have to have a new fuse panel and gem module and possiably a shifter motor. Any input on this would be greatly appreciated. I also have a problem with my air it only comes out at my deforester vents.
Last edited by djwat50; Aug 27, 2006 at 09:32 PM. Reason: Airflow
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It could just be the servo is stuck.
Which usually means a new servo (shifter motor).
Did you check any of the wiring to the transfer case? Sometimes water gets in the connections and causes problems.
When you turn the switch, do you hear any clicking from the servo?
Which usually means a new servo (shifter motor).
Did you check any of the wiring to the transfer case? Sometimes water gets in the connections and causes problems.
When you turn the switch, do you hear any clicking from the servo?
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Originally Posted by krewat
It could just be the servo is stuck.
Which usually means a new servo (shifter motor).
Did you check any of the wiring to the transfer case? Sometimes water gets in the connections and causes problems.
When you turn the switch, do you hear any clicking from the servo?
Which usually means a new servo (shifter motor).
Did you check any of the wiring to the transfer case? Sometimes water gets in the connections and causes problems.
When you turn the switch, do you hear any clicking from the servo?
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Originally Posted by 99FordGuy
I think the front hubs are vacuum operated. It sounds like you may have a vacuum leak that is causing both problems. Check you vacuum hoses under the hood and see if one has come loose.
Did you check fuses, etc? I wonder why the dealer said you needed a fuse panel?
Maybe you have water in the firewall connection? Rich? You around?
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I have checked all fuses that I am aware of in the cab and under the hood and they check out o.k.
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I'm here .
Art it may be the classic (gem module is confused) needs to be reset
first chk fuses 6,17,19.28
2 relays involved under hood drivers side
switch on dash
shift motor on transfercase
gem module
vacum solenoid pass side under hood.
ac out the defrost is the classic vacum leak somewhere,or broken diverter/ actuator
I would disconnect the battery for 5 mins to reset computer.Then reconnect batt
start the vehicle on level ground ,foot on brake ,not rolling in neutral.
shift the switch on dash to 4x4 hi and listen for shift motor clunk
then shift to 4lo listen for shift motor clunk .
Then shift switch back to 4hi wait for noise ,then shift back to 2w watch lights on dash if they go out your good .
But you need to fix vacum leak for your fron hubs to work properly.
rich
Art it may be the classic (gem module is confused) needs to be reset
first chk fuses 6,17,19.28
2 relays involved under hood drivers side
switch on dash
shift motor on transfercase
gem module
vacum solenoid pass side under hood.
ac out the defrost is the classic vacum leak somewhere,or broken diverter/ actuator
I would disconnect the battery for 5 mins to reset computer.Then reconnect batt
start the vehicle on level ground ,foot on brake ,not rolling in neutral.
shift the switch on dash to 4x4 hi and listen for shift motor clunk
then shift to 4lo listen for shift motor clunk .
Then shift switch back to 4hi wait for noise ,then shift back to 2w watch lights on dash if they go out your good .
But you need to fix vacum leak for your fron hubs to work properly.
rich
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Just to keep this thread on target, he never mentioned the hubs weren't working.
The problem is the transfer case is still in 4x4, but no lights on the dash, and turning the switch does nothing.
The problem is the transfer case is still in 4x4, but no lights on the dash, and turning the switch does nothing.
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Rich
I checked thoses fuses that you said and they were o.k. also did what you said about resetting the gem module that didn't work either although it did solve my air comming out of my deforster problem, strange ha. I went and had a new gem stuck in and it didn't help either. Had the guy take it back out because it is about $450 don't think that is the problem I don't think he did either. The question that I have now is, does the transfer case stay in 4hi all the time and does the hubs being locked in and out decied whether your in 4wheel drive or not. Because the elec. drawing that I got from that mach. gave me does not show a mode from the switch that puts the transfer case in a two wheel mode.
Thanks don
I checked thoses fuses that you said and they were o.k. also did what you said about resetting the gem module that didn't work either although it did solve my air comming out of my deforster problem, strange ha. I went and had a new gem stuck in and it didn't help either. Had the guy take it back out because it is about $450 don't think that is the problem I don't think he did either. The question that I have now is, does the transfer case stay in 4hi all the time and does the hubs being locked in and out decied whether your in 4wheel drive or not. Because the elec. drawing that I got from that mach. gave me does not show a mode from the switch that puts the transfer case in a two wheel mode.
Thanks don
Last edited by djwat50; Sep 6, 2006 at 05:23 PM.
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I think your transfer case motor is bad .
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.
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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Hi guys- I seam to be having the same problem also but a little diffrent. My 4x4 indacator light stays on at all times,I have replaced the transer case motor allready but then realized that there is no power going to the motor. We hooked up power to the old motor from oa baterry charger and the motor works fine but still no power to the motor. When you turn the switch to 4l or 4h there is no noise no click no clunk nothing. Have been reading alot about the gem being bad but everything seems to be working fine as far as delay wipers key dinger so on so forth. Checked all fuses detached the battery and still nothing what is my next step. GEM module bad? Please let me know thanks.