Question about 2001 Ford Explorer Sport Trac
Is the light just not working? Are you sure that the 4 wheel drive at the wheels is not working? ie does only your right rear wheel spin on ice and snow?
If you are sure of all the previous things then you need to make sure there is power going to the transfer case motor when you activate the switch. If no power it could be a fuse or relay causing the problem.
Posted on Oct 31, 2012
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Posted on Jan 02, 2017
Yes you do have a wiire that runs back that way. Mine pops off when 4xing all the time. But that is because I a rough on it and broke the snap. It is on the drivers side near the top of the transfer case
Posted on Feb 07, 2009
if you are testing the voltage at the mtr on the tansfer case and you have voltage all other parts are working . so that leaves two things the mtr our the coller that engauges our disengauges the tansfer case you are almost there in solving your problem good luck kdc744
Posted on Jan 27, 2009
you can use a test light to see if you are getting power to your shift actuator by unplugging actuator and testing for power at your wires while someone activates your switch,if you have power then should be a bad actuator.
Posted on Feb 25, 2009
Which type is it, ESOF ( Electronic Shift on the Fly ) or MSOF ( Mechanical Shift on the Fly ) ?
Best to check by jacking the truck up ( taking safety precautions, parking brake, chock the wheels, jack stands, etc ), turn the key to the run position and place into 4WD.
If the front drive shaft turns, the problem is in the transfer case.
If the front drive shaft does not turn, the problem is in the front axle.
I would suspect the front shaft does not turn, and the most common cause of this is the vacuum motor on the front axle, the vacuum lines to it, or the vacuum solenoids.
The vacuum shift motor is what locks the front wheels in, and without this action, the PM does not get the confirm that the truck is good to go, and illuminate the cluster indicators ( 4x4, and if 4L the Low Range lamps ).
There are 2 vacuum solenoids, one is 4WD one is 2WD ( to move the motor one way or the other ).
Start with checking for vac on the vacuum motor ( actually it is a diaphragm ). The pink line should have vacuum when in 4WD, the blue line should have vacuum when in 2WD. If not, time to work back towards the solenoids. Use a short length of hose on the vacuum solenoids, and retest.
If still missing vacuum on the 4WD solenoid, I would suspect it is bad, but best to test on the other side of it, to make sure the vacuum reservoir ( mounted behind the battery box ) is supplying vacuum to the solenoids.
This is just the most common cause, best to confirm with the 1st test above, to know if you should look to the trans case, or axle.
This is what the vacuum shift motor looks like on the front axle
These are the vacuum shift solenoids
Posted on Dec 12, 2009
put a ground strap from your transfer case to your transmission. also with someone listening under the car with the key on but not running put your foot on the brake, shift to neutral and turn the selecter to 4x4 low and see if you can hear the actuater respond
Posted on Dec 19, 2009
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