2002 Ford Explorer loss of 4 wheel drive

  • 6 CYL
  • 4WD
  • 52,500 MILES
This problem was gradual over several months. At first when starting the car the four wheel drive light would flash indicating to "service the four wheel drive" without noticable problems. Then, after starting, the indicator light would flash and when putting it into reverse and turning as if out of a parking space, it would feel as if the four wheel was engaged and would abruptly "clunck" out as if disengaged. This happened intermittantly for a couple of months. I tried letting the vehicle warm up for say 15 minutes in the morning and the light indicator would not flash anymore, I would not feel that clunck, and the four wheel drive would engage no problem and no indicator light. Almost like there was some connection with temperature, cold it would happen them warm it wouldnt. After a couple more months the light stopped lighting and no four wheel drive working at this time. Also no feeling of engaging or disengaging. Good luck with this one and thanks in advance!
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Monday, October 5th, 2009 AT 5:25 AM

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On the transfer case find the actuator motor, have someone press the buttons while you tap it with a hammer. If it works, the brushes, or contacts inside it are possibly corroded a bit, may work to free them up, if not check for power at this motor, if power is present, replace motor.
GEARMOTOR ENCODER ASSEMBLY Removal and Installation 1. Press the 4X4 HIGH button on the mode select switch (MSS). Fig. 53: Locating 4X4 High Button On The Mode Select Switch Courtesy of FORD MOTOR CO. 2. Raise and support the vehicle. 3. Disconnect the gearmotor encoder assembly harness connector. Fig. 54: Disconnecting Gearmotor Encoder Assembly Harness Connector Courtesy of FORD MOTOR CO. 4. Remove the bracket bolt and gearmotor encoder assembly mounting bolts and remove the gearmotor encoder assembly. Fig. 55: Removing Bracket Bolt And Gearmotor Encoder Assembly Mounting Bolts Courtesy of FORD MOTOR CO. 5. Remove the grease from the motor adapter and check for any nicks or burrs. If any damage is found, repair or install a new gearmotor encoder assembly as necessary. For additional information, refer to TRANSFER CASE - AUTOMATIC SHIFT . 6. To install, reverse the removal procedure. Apply a coat of Multi-Purpose Grease to the gearmotor encoder assembly.


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Monday, October 5th, 2009 AT 5:04 PM

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