Question about 1999 Ford Explorer
There is a max speed limit to engage and use 4 wheel low. try to engage while rolling 5mph and do not exceed 20mph in this "power" gear. also make sure the all drive components are well greased. lack of grease throws off drive alignment and may not easily engage.
Posted on Oct 22, 2013
Testimonial: "Thank Dan but that didn't work. I tried other posted solutions and the one that worked was from Jon B and that is in neutral with the brake applied, that's the only way to engage it and i learned by trying to turn back to 4 high or AWD you need neural with brake pressed. Thanks for your help though."
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Posted on Jan 02, 2017
I have recently had this problem with a customer. It seems the 4x4 low will only engage in neutral with the brake applied. And also check fuse. Then select drive and you will feel it lock in. Don't "goose" the fuel when attempting this.
Posted on Jan 14, 2009
The 4x4 system has a controller,or computer,called the Body Control Module and there will be stored trouble codes.To work on a system that's electronically controlled,you have to get the codes from the system.Every trouble code has a diagnostic route to follow to resolve the faulty component.I have read about Explorers having faulty door open/closed sensors.These set a code in the Body Control Module,and in the process,the BCM inhibits 4x4 operation,causing a no 4 wheel drive complaint.There is also an electric motor on the transfer case that can fail electrically or mechanically,along with speed sensors and fork position sensors that can give trouble.
Posted on Sep 03, 2008
Go to the engine compartment where the relays are located with the fuses. Check or replace the 4 wheel auto engage relay , maybe is not working. Is very clearly mark, I believe is the top right one looking at the bost front front of vehicle to the back. There is a diagram drawing of each relay in the cover, so you can't go wrong.
Posted on Nov 05, 2008
look on fire wall pass. side you will see 2 parts with vacume lines attached 99 percent of the time that is what went i had the same problem
Posted on Feb 01, 2009
the hubs ussualy have two positions, auto and lock. i dont know of any other positions. they will only go in one way. and the hubs should be clearly marked on the outside with an arrow pointer.
Posted on Nov 23, 2009
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