1991 Ford Explorer 4 Wheel drive engagement

1991 FORD EXPLORER
91,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
HORTTEACHER
  • MEMBER
  • 1 POST
The 4 wheel drive has been working just fine until recently. The car is equipped with push button 4 wheel drive. I was having trouble with it engaging when I pushed the button on the dash for 4 wheel drive. I purchased new lock out hubs which allow me to manually lock the hubs in when I want 4 wheel drive. They work perfectly. Now all of a sudden I cannot get the car to go into 4 wheel drive. Several people seem to think there is a sensor problem but I do not know where to look for that. Someone else said there is a short somewhere. Can you give me a clue? Thanks
Feb 5, 2009 at 10:12 PM
Avatar
MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
when you push the button what happens? i find mostly it is the motor on the transfer case itself that is bad not allowing transfer case to actually shift from 2 to 4. they have just come out with a aftermarket motor for under 100 bucks so you dont have to spend the 450 the dealer wants. try tapping the motor on the transfer case with a hammer when someone else pressed it into 4wd and see if it shifts, if it does then replace motor
Feb 7, 2009 at 11:42 PM
Avatar
MERLIN2021
  • ✓Experienced Mechanic
  • 17,250 POSTS


https://images.2carpros.com/forum/automotive_pictures/62217_transfer_Case_1.jpg


https://images.2carpros.com/forum/automotive_pictures/62217_shiftmotor_1.jpg

If it doesnt work after hitting on it,disconnect motor and apply 12V and ground on the large orange and yellow wires going to motor.Reverse power and ground a few times to run motor back and forth.Usually works,contacts inside motor get corroded.
Feb 7, 2009 at 11:52 PM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle