I have a 2002 Ford Explorer with a 4.6 engine with the auto 4 wheel drive electric push button system (4x4 auto / 4x4 high / 4x4 low). When running in 4x4 auto (normal running mode), making hard turns the front wheels clunk badly. I lifted vehicle clear of ground. Under low load (800-1000 rpm) just the rear wheels spin when in drive. When rpm is brought up to 1000-1200 transfer case will engage front wheels so I assume the transfer case is transfering power to the front wheels properly. With all 4 wheels off the ground if I manually turn either front wheel it will turn freely and independently of the other front and rear wheels but will turn the front drive shaft to the transfer case. With rear wheels locked by the parking brake and the vehicle is still lifted, if I manually turn either front wheel the other front wheel will turn in the opposite direction however the opposite wheel will only turn after the manually turned wheel has been moved about a quater turn and the motion of the opposite wheel is not fluid but rather stammered. No dash indicator lights are on when running and the control modules are not clicking. When the ignition is turned on all continuity lights cycle correctly. To my knowledge the 2002 Explorers do not use an auto locking hub system as both 4X2 and 4X4 models use the same front hubs with the same replacement part numbers. Can you offer some advice to correct this problem?

Ford Bronco or Explorer? They discontinued the Bronco in 1996. Is it stuck in 4 high or 4 low? Do you have a manual shifter or a push button? If you have an automatic electric system you may have a bad transfer case motor or switch. If you have the manual system, make sure that the shifting levers are free and not damaged or restricted from moving. Try rocking from forward to reverse while trying to shift out of 4x4.

On these issue, there are few solved help links for troubleshooting the issue easily.-------

Click the link below: ---

No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

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Car will not go into 4WD high or 4WD low?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

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No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

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4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

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4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

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2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

----------

Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

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4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

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2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

----------

4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------

4x4 will not engage on Ford F150?

http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

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Dodge Ram 4x4 light keeps flashing

4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

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Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

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These details will help.

Thanks.

On these issue,there are few solved help links for troubleshooting the issue easily.-------

Click the link below:---
No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

-----------
4X4 Truck makes roaring noise in the front end?

http://schematicsdiagram.blogspot.com/2012/01/4x4-truck-makes-roaring-noise-in-front.html

-------------
Car will not go into 4WD high or 4WD low?

http://schematicsdiagram.blogspot.com/2011/12/car-will-not-go-into-4wd-high-or-4wd.html

--------------
No 4x4 light on dash?

http://repairhelpcenter.blogspot.com/2011/12/no-4x4-light-on-dash.html

------------
4 wheel drive system will not disengage?

http://technoanswers.blogspot.com/2012/01/4-wheel-drive-system-will-not-disengage.html

----------
4WD light is flashing and beeping? NO 4WD high?

http://schematicsdiagram.blogspot.in/2012/02/4wd-light-is-flashing-and-beeping-no.html

----------
2002 Jeep Wrangler: 4WD Idiot Light is ON?

http://technoanswers.blogspot.in/2012/06/2002-jeep-wrangler-4wd-idiot-light-is.html

----------

Traction control switch will not engage on 4WD High or Low

http://whoisbyme.blogspot.com/2012/10/traction-control-switch-will-not-engage.html

-----------

4WD light flashing and 4WD will engage after few minutes

http://repairhelpcenter.blogspot.com/2012/10/4wd-light-flashing-and-4wd-will-engage.html

------------
2008 Toyota Tundra: 4x4 Wheel Drive Light is Flashing?

http://technoanswers.blogspot.in/2012/05/2008-toyota-tundra-4x4-wheel-drive.html

----------
4x4 front differential will not engage the axle on ford?

http://technoanswers.blogspot.in/2012/02/4x4-front-differential-will-not-engage.html

-------
4x4 will not engage on Ford F150? http://technoanswers.blogspot.in/2012/02/4x4-will-not-engage-on-ford-f150.html

-------------
Dodge Ram 4x4 light keeps flashing 4X4 LOW LIGHT IS FLASHING ON DASH

http://technoanswers.blogspot.in/2012/09/dodge-ram-4x4-light-keeps-flashing.html

----------
Ford 4x4 front wheels will not engage?

http://technoanswers.blogspot.in/2012/02/ford-4x4-front-wheels-will-not-engage.html

-------------

These details will help.

Thanks.

Put transmission in neutral with engine running push the button for high 4x4 several times. If that doesnt work, tap on 4x4 actuator while someone pushes the button for u. Its kinda like a starter.

it has to be running and in neutral to engauge the 4x4. shift to neutral,then push the 4x4 option that you want. 4wheel high you can use almost any sensible speed.4wheel low is only for low speed 15 to 20mph is best for 4wheel low,otherwise will damage engine or transfer case. when you take it out of 4x4 it has to be in neutral also. thank you for choosing fixya.com

Hi, if your 4x4 is push button control just put in netural and push the button ,low range is real low gear for like mud digging and off roading and high range is for like the road like when its snow on road. If you have the shifter type put in netural and do the same as above just select 4 high or 4 low after placed in gear put your car in drive . That is how your 4x4 works. If i can help just re post.

I had same problem on my 2002 explorer. Its either the computer module, or the electric solenoid on the transfer case. In my case it was both. The computer module I had done twice in 14 months.

Switched the fuses out for new ones

I disconnected the electronic control on the transfer case and it seems to have unlocked the 4x4

At the back of the transfer case, near the top, there is a connector. I unplugged it and that seems to have disconnected the 4x4. My 2002 Explorer was stuck in 4x4, even though the 4x4 light was not on and I hit the Auto button a lot.

run an obd 2 scan at autozone or advance to get the codes on why its not switching.